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General Category => Yamaha FJ1100 / FJ1200 Running Problems => Topic started by: AppleJack on August 17, 2019, 11:33:18 AM



Title: Ignition Coils
Post by: AppleJack on August 17, 2019, 11:33:18 AM
Hello All
Attempting to revive a long asleep 1985 FJ1100.  Coils appear to be bad as primary side of both check at 13 ohms with my Fluke DMM.  If I read my Clymer manual correctly this should be 2.4-3 ohms?  Secondaries 27 meg ohms.  These are toast, right?

Are replacements available?  I don't see them on rpmracingca.com  Any other options for this problem? 

Thanks in advance...



Title: Re: Ignition Coils
Post by: Pat Conlon on August 17, 2019, 03:21:41 PM
That’s surprising, other than some occasional cracks, the FJ’s oem coils have shown to be very durable.
If your testing shows both coils to be bad, I would suspect your test methods.
The probability that both coils went bad at the same time is low.
Others will chime in on your test numbers, I’m away from home now.

Re: Alternate Coils:
Dyna green 3.0 ohm coils are a popular substitute for oem.
You have to buy plug wires and boots separately with the Dyna coils
2 options on the plug wires/boots.
1) buy carbon core suppression wire and use regular non resistor plug boots
2) buy regular steel (copper) core non suppression wire and use NGK resistor plug boots..
https://www.ebay.com/p/Dynatek-DC1-1-Coil-12v-3-0-Ohm-Green/171268638 (https://www.ebay.com/p/Dynatek-DC1-1-Coil-12v-3-0-Ohm-Green/171268638)

Check FleaBay for oem coils, they come with steel core wires and resistor plug boots.

Cheers


Title: Re: Ignition Coils
Post by: roverfj1200 on August 17, 2019, 03:56:10 PM
Not to sure on which Fluke you have I would say there are 2 reasons maybe your readings are out. 1 The impedance and 2 bad leads..

That is to say you are testing insulation for a higher voltage.  A cheap multi meter with out these better testing functions can be better for this type of testing.



Title: Re: Ignition Coils
Post by: racerrad8 on August 17, 2019, 04:19:03 PM
Did you remove the spark plug boot to test the secondary?

Randy - RPM


Title: Re: Ignition Coils
Post by: krusty on August 17, 2019, 08:25:43 PM
Hello All
Attempting to revive a long asleep 1985 FJ1100.  Coils appear to be bad as primary side of both check at 13 ohms with my Fluke DMM.  If I read my Clymer manual correctly this should be 2.4-3 ohms?  Secondaries 27 meg ohms.  These are toast, right?

Are replacements available?  I don't see them on rpmracingca.com  Any other options for this problem? 

Thanks in advance...


I would first check ALL connections in the ignition circuits. Corrosion and poor earthing can affect readings.


Title: Re: Ignition Coils
Post by: ribbert on August 17, 2019, 11:26:29 PM

Hello All
Attempting to revive a long asleep 1985 FJ1100.  Coils appear to be bad as primary side of both check at 13 ohms with my Fluke DMM......


Going back one step, have you checked for spark and there is none, or have you just dived straight into the coils because it won't start?

If it was ridden to its resting place, the coils will be fine, they don't deteriorate by time.

If there is no spark, follow Krusty's advice first.

For bikes that have sat for a long time, it's nearly always carbies.

Noel


Title: Re: Ignition Coils
Post by: AppleJack on August 19, 2019, 01:26:37 AM
Right, my Fluke 8060A is similar vintage as the bike, if not a couple of years older!  I'm troubleshooting no-spark condition - plug laying on to of cylinder head and nothing.  Agree more testing called for and will be re-doing ground connections and rechecking all other connections, too.

Had some 1/4 watt, 5% resistors lying around so did some checking: 
Five 220 ohm resistors averaged 215.88 - 4.1 ohms and 1.8 % low. 
Five 330 ohm average of 322.4 ohms - 7.76 ohms and 2.3% low. 
Two 1,000 ohm average of 994.9 - 5.1 ohms and 0.5% low.              All resistors within 5% tolerance though.

Duplex receptacle in kitchen measured 117 volts AC. 

I conclude from this that, if anything, the 13 ohm reading is a little low?  Meaning the primaries are even farther out of spec, right?



Title: Re: Ignition Coils
Post by: AppleJack on August 19, 2019, 01:19:31 PM
Huh - Went out and re-checked coils with my ohmmeter.  And this time readings are normal for both primaries and secondaries.  Only difference I applied some dielectric grease to all connectors. 

Moving on.  I have a question about the small springs under the resistor in the spark plug boots.  Two are missing - is this critical to the plugs firing?  Are they available? 

Also, I have a schematic that shows a rev limiter - where is it physically located on the bike?  Schematic is for 1100L / LC  Mine is a 1100N.


Title: Re: Ignition Coils
Post by: Pat Conlon on August 19, 2019, 02:00:29 PM
Time for new boots: http://rpmracingca.com/proddetail.asp?prod=Ignition%3ANGKBoot (http://rpmracingca.com/proddetail.asp?prod=Ignition%3ANGKBoot)

Re: Rev limiter: I don’t know what schematic you’re looking at. Some FJ models were power limited to 100bhp like FJ’s sold in Japan, Switzerland and France and thus had certain limits in the carbs (jetting, boots, airbox) and ignition (timing curve, lower rpm limit)

You should have a USA FJ with no power limits, but there is a high RPM limit (~10k rpm?) programmed into your TCI. IOW there is no separate RPM limiting module, it’s part of your TCI.
(TCI = Transistor Controlled Ignition aka your ignition box)

Clear as mud?


Title: Re: Ignition Coils
Post by: AppleJack on August 19, 2019, 04:52:52 PM
Yep, and just glad new boots are still available. 

The schematic says it's for a a 1100L / LC and mine is a 1100N.  I suppose the N is USA model? At any rate, no separate module near the IC/Ignitor box anyway.  I think you're correct that it's internal to the TCI. 

Oh, and are the rubber grommets that hold side fairings on available anywhere? Several are MIA.

One other dumb question - use same DOT 3 fluid in clutch, front brake, and rear brake reservoirs? 

Thanks...


Title: Re: Ignition Coils
Post by: FJmonkey on August 19, 2019, 05:30:45 PM
Jon, you will find a ton of FJ parts at the RPM web site, including the rubber bits for the fairing. Randy is also a Yamaha dealer so not just FJ. And the OEM brake/clutch fluid is DOT3. Some have flushed out to use DOT5 like I did for the clutch. So when the slave leaks, and I don't catch it, the fluid won't hurt the lower fairing anymore than it already is.


Title: Re: Ignition Coils
Post by: ryanschoebel on August 19, 2019, 06:01:09 PM
but there is a high RPM limit (~10k rpm?) programmed into your TCI. IOW there is no separate RPM limiting module, it’s part of your TCI.
(TCI = Transistor Controlled Ignition aka your ignition box)


Can anyone elaborate on how that works? I may have accidentally hit that before, and want to know how concerned I should be. Dont ever really want to hit it again... Nothing like thinking you are in second when you are in first...


Title: Re: Ignition Coils
Post by: Tuned forks on August 19, 2019, 06:04:28 PM
As Monkey elaborated, the RPM site is your friend. 

Here are two examples.
https://www.rpmracingca.com/proddetail.asp?prod=M%2FC%3A90480-01401 (https://www.rpmracingca.com/proddetail.asp?prod=M%2FC%3A90480-01401)

and
https://www.rpmracingca.com/proddetail.asp?prod=M%2FC%3A90480-13014 (https://www.rpmracingca.com/proddetail.asp?prod=M%2FC%3A90480-13014)

Joe


Title: Re: Ignition Coils
Post by: AppleJack on August 19, 2019, 08:24:59 PM
All you are the best!  Thanks for the heads up on parts.

In making my parts list, I remembered that the mirrors are in really tough shape too.  Can just the mirror/glass be pried out and replaced?

Or is there anything that screws directly into the existing mount that will work? 

Evil bay has some universal mirrors, but would need to know the thread size before going with something like that I think?


Title: Re: Ignition Coils
Post by: Pat Conlon on August 19, 2019, 08:49:04 PM
Re: 84/85 handlebar mounted mirrors.

Many aftermarket options available, however, be advised that the right mirror is a reverse thread.
This is something all Yamaha’s have in common. This reverse thread prevents overtightening of the mirror stalk on the right side from wind pressure pushing on the forward side of the mirror.


Title: Re: Ignition Coils
Post by: ribbert on August 19, 2019, 09:49:56 PM
Re: 84/85 handlebar mounted mirrors.

Many aftermarket options available, however, be advised that the right mirror is a reverse thread.
This is something all Yamaha’s have in common. This reverse thread prevents overtightening of the mirror stalk on the right side from wind pressure pushing on the forward side of the mirror.


The wind would loosen a LH thread on the RHS!
Anyway, the LH thread is so the mirror loosens if you clip something with it instead of whipping the bars around and falling over or breaking the mirror mount which on many bikes also holds the front brake lever. Less important bit still handy, it protects the mirror from breaking if you clip something.
It's a safety thing, you bump it, it swings out of the way.

Noel


Title: Re: Ignition Coils
Post by: Pat Conlon on August 19, 2019, 11:44:31 PM
...This reverse thread prevents over tightening of the mirror stalk on the right side from wind pressure pushing on the forward side of the mirror.

The wind would loosen a LH thread on the RHS!

That is correct, the wind pressure loosens the right mirror. (just like it does the left mirror)
That’s why I said ^^^ what I said...with the key words being “prevents over tightening”

Good point on the safety issue


Title: Re: Ignition Coils
Post by: ribbert on August 20, 2019, 05:43:45 AM
Re: 84/85 handlebar mounted mirrors.

.....This reverse thread prevents overtightening of the mirror stalk on the right side from wind pressure pushing on the forward side of the mirror.

Pat, if I was you, I'd blame that one on the meds, there can be no other explanation, unless of course, like me......


Noel.....you don’t know what you are talking about....


 I think you just got hit by the karma bus Pat. :lol:

Noel



Title: Re: Ignition Coils
Post by: Pat Conlon on August 20, 2019, 10:23:08 AM
Re: 84/85 handlebar mounted mirrors.

.....This reverse thread prevents overtightening of the mirror stalk on the right side from wind pressure pushing on the forward side of the mirror.

Pat, if I was you, I'd blame that one on the meds, there can be no other explanation, unless of course, like me......

Noel, I don’t understand.... why is my statement wrong?  Karma be damned...


Title: Re: Ignition Coils
Post by: AppleJack on August 20, 2019, 12:10:50 PM
Cautiously optimistic here today.  Still no spark with plug laying on cylinder head - this is number one cylinder with the good plug boot! 

But the ohmmeter check across the pickup coils is way out of spec.  I'm showing like 3 or 4 ohms instead of the 110-130 ohms spec.  Checking by unplugging the loom from the IC Ignitor box and ohming from orange to black and again from grey to black - both the same at nearly a short. 

Let me guess, these are made of unobtanium?  What have others done in this instance?


Title: Re: Ignition Coils
Post by: AppleJack on August 20, 2019, 12:24:43 PM
Is 1985 sames as 1984 as far as TCI goes?  If so maybe this would work?

https://www.ebay.com/itm/1984-Yamaha-FJ1100-Ignition-Pulse-Pickup-Coils-OEM-84-B/282909298436?hash=item41deb54f04:g:Td8AAOSwAfpawldq (https://www.ebay.com/itm/1984-Yamaha-FJ1100-Ignition-Pulse-Pickup-Coils-OEM-84-B/282909298436?hash=item41deb54f04:g:Td8AAOSwAfpawldq)


Title: Re: Ignition Coils
Post by: FJmonkey on August 20, 2019, 03:31:46 PM
84 and 85 will be the same except for paint color.


Title: Re: Ignition Coils
Post by: ribbert on August 21, 2019, 07:58:14 AM
Re: 84/85 handlebar mounted mirrors.

.....This reverse thread prevents overtightening of the mirror stalk on the right side from wind pressure pushing on the forward side of the mirror.

Pat, if I was you, I'd blame that one on the meds, there can be no other explanation, unless of course, like me......

Noel, I don’t understand.... why is my statement wrong?  Karma be damned...

No, you're right Pat, on reflection it sounds like a perfectly logical explanation. Having just returned from a long sabbatical, I was caught off guard by your shitty remarks the other week and for the first time ever in over 4000 posts, I responded in kind. I am deeply disappointed in myself for not remaining above it. My apologies if I you found my comments in any way offensive.

I will endeavour to do better in the future.

Noel


Title: Re: Ignition Coils
Post by: AppleJack on August 21, 2019, 12:03:25 PM
Phew!  Kinda lucked out on the pulse pickup coils.  Got a little confused as to the orange and grey leads going to the IC Ignitor - the other day I was actually checking the orange and grey going to the six-gang plug. 

I say I got lucky because the pulse coils actually go to the four-gang plug.  But re-checking today (after already ordering a different pair from E-Bay) I find the coils are still suspect as they are checking at 165 ohms. Still out of the 110-130 ohms spec!  Sheesh, what a Ma-Roon hehe

Big shout-out for the great feedback from the forum.  Greatly appreciated. 

Along with the new coils I've got new plug boots, round and oval grommets, and a new air filter on the way from rpm. 


Title: Re: Ignition Coils
Post by: Pat Conlon on August 21, 2019, 03:39:55 PM
The ohm values for testing the pick up coils is INCORRECT in the Haynes and Clymer FJ manuals.
Throw those POS in the trash. They just cost you a set of coils you did not need to buy.

Use the ohm values in the Genuine Yamaha Factory Service Manual.
149-182 ohms when the coils are warmed to 68*f

If your coils tested @ 165 ohms you are fine.



Title: Re: Ignition Coils
Post by: AppleJack on August 21, 2019, 04:29:12 PM
Wha!?  Oh man, well lesson learned; and only $35! 

So I'm still in search of my no-spark culprit.  It's not the ignition coils, plug wires, the pulse pick-up coils, and I have two different IC Ignitor boxes I've tried too.  Not sure what's going on here.  Gonna ohm out spark plugs next? 

Anyone know of a good Yamaha shop in Charlotte NC metro area? 


Title: Re: Ignition Coils
Post by: AppleJack on August 21, 2019, 04:38:03 PM
Just pulled my Clymer manual and checked again. 

The spec you cite is listed for the Digital Control Ignition for the 1989 and newer bikes, while the TCI spec is listed at 108-132 ohms.  This is a misprint though huh?  They're both the same resistance value? 


Title: Re: Ignition Coils
Post by: AppleJack on August 21, 2019, 04:57:18 PM
Just occurred to me that this could be from the side stand, neutral, clutch, or kill switches too.  Got some troubleshooting to do. 

Lights come on, turn signals work, and engine spins over with the ignition switch on...


Title: Re: Ignition Coils
Post by: Pat Conlon on August 21, 2019, 06:53:41 PM
Just pulled my Clymer manual and checked again.  

The spec you cite is listed for the Digital Control Ignition for the 1989 and newer bikes, while the TCI spec is listed at 108-132 ohms.  This is a misprint though huh?  They're both the same resistance value?  



Here’s a post from 4 years ago where I went through on my ‘84 what you just did....(see post #10)
http://www.fjowners.com/index.php?topic=13448.msg135362#msg135362 (http://www.fjowners.com/index.php?topic=13448.msg135362#msg135362)


Title: Re: Ignition Coils
Post by: T Legg on August 21, 2019, 07:31:37 PM
Just occurred to me that this could be from the side stand, neutral, clutch, or kill switches too.  Got some troubleshooting to do. 

Lights come on, turn signals work, and engine spins over with the ignition switch on...
                                                                                                                                                                                                                                                        The starter wont operate if the clutch,side stand switch or kill switch is off. 


Title: Re: Ignition Coils
Post by: Tuned forks on August 21, 2019, 08:34:47 PM
Just pulled my Clymer manual and checked again.  

The spec you cite is listed for the Digital Control Ignition for the 1989 and newer bikes, while the TCI spec is listed at 108-132 ohms.  This is a misprint though huh?  They're both the same resistance value?  



Here’s a post from 4 years ago where I went through on my ‘84 what you just did....(see post #10)
[url]http://www.fjowners.com/index.php?topic=13448.msg135362#msg135362[/url] ([url]http://www.fjowners.com/index.php?topic=13448.msg135362#msg135362[/url])


That was a really good blow by blow thread Pat.  Very useful for someone with ignition problems.

Joe


Title: Re: Ignition Coils
Post by: AppleJack on August 22, 2019, 01:44:44 AM
Great - this is good news as I have new plug boots on the way from rpm.  Couple of them missing a small spring ahead of the internal resistor.

And local AutoZone has DPR8EA-9'S in stock per website, shoot they may be 34 years old too  This bike ought to run, only showing 7,800 on odometer!

Thanks to all...


Title: Re: Ignition Coils
Post by: AppleJack on August 23, 2019, 01:26:20 PM
So, in my seemingly never-ending search for "the answer" to no-spark condition I found this today. 

Battery voltage of 13.1, but voltage at the connector to the ignition coil (R/W lead) measures 11.5V on the 2-3 coil, and 10.3V on the 1-4 coil.  Also, if I unplug the 2-3 coil connector the voltage on 1-4 comes up to 11.5? 

Is that voltage too low?  R/W lead comes from the "starting circuit cut-out relay"  Where is said relay on the bike?

This same low voltage goes to the IC Ignitor box via a R/W lead also.  Seems too low to me but I'll defer to the experts here on this...


Title: Re: Ignition Coils
Post by: oldktmdude on August 23, 2019, 04:36:56 PM
   It's not unusual to have low voltage numbers at the coils. My bike had only 9.5v at the coils but was still starting and running ok. I've done the coil relay mod and voltage is much better. The starting circuit relay that you are referring to, is located under the left hand side of the fairing between the headlight and the fuse box.
This relay is also the indicator unit and is also controlled by the safety switch system ; neutral, clutch and side stand cut out switches.
   Regards, Pete.


Title: Re: Ignition Coils
Post by: AppleJack on August 27, 2019, 10:31:05 AM
Wracking my brain here trying to figure this out. 

Here is what's not causing problem: 

Ignition coils primaries and secondaries ohm out correctly and have good dc voltage,

pulse pick-up coils ohm out correctly,

new battery and spark plugs,

kill, side stand, and neutral switches working.

So, I'm wondering if there's a test for the output from the IC Ignitor module? 

Engine cranking what should I see at the grey and orange leads connected to the ignition coils? 

I have 2 of these modules but they are both 34 years old? 





Title: Re: Ignition Coils
Post by: AppleJack on August 27, 2019, 01:09:44 PM
So, went out and tried again and I think I see the transistor control must just switch the ground to the coils as the battery volts already there on the R/W lead. 

10.5 volts on R/W lead to TCI - I know it is unrelated but the vacuum diaphragm does hold a vacuum on the suck test

Running out of things to check...


Title: Re: Ignition Coils
Post by: Pat Conlon on August 27, 2019, 03:10:06 PM
Let’s back up....

The bike was running fine when you parked it...correct?
Now after a period of time, the bike does not want to start.
You think it’s electrical because you took out the plugs and laid the plugs on the top fins of the head, thumbed the starter and you don’t see a spark on the plugs...

You’ve checked the ignition coils, pick up coils, side stand switch, neutral switch, 12v power to TCI and you have installed new plug caps and battery...still no spark?

Are you sure you have a good ground at the plugs? Try a plug clamp wired to the negative terminal of your battery. Turn off the lights in your garage.

You might have lost a ground to the engine.

Again, other than the battery, it is rare an electrical problem happens when your bike is parked....rats, mice, vermin, yes, that happens but electrical problems out of the blue...not often.

After the battery is refreshed, 99% of the no start problems after parked is carb related.


Title: Re: Ignition Coils
Post by: T Legg on August 27, 2019, 04:02:17 PM
The most accurate method for determining if there is spark is to have a friend hold the plug while you crank.Another method is to use a timing light.


Title: Re: Ignition Coils
Post by: Tuned forks on August 27, 2019, 04:37:17 PM
The most accurate method for determining if there is spark is to have a friend hold the plug while you crank.Another method is to use a timing light.

Of course it helps if the friend doesn't know what tens of thousand of volts feels like coursing thru their hand/arm/body.  :biggrin:  I got hit by 60,000 DC one time.  Never forget that feeling.

Joe


Title: Re: Ignition Coils
Post by: oldktmdude on August 27, 2019, 07:32:01 PM
   Just re-read this post from the beginning and you have not mentioned anything about fuel. As Noel stated in an early post, the usual cause of a
non start issue after a period of rest, is fuel related not spark. Have you tried putting a small amount (1/2 teaspoon)  of fuel down each spark plug hole, re-fitting
plugs and attempt starting? This will give you a solid starting point for trouble shooting. Be aware of the fire hazard when doing this.
   Regards, Pete.


Title: Re: Ignition Coils
Post by: AppleJack on August 28, 2019, 02:16:09 AM
Okay,
I will put a clamp to the plugs and try that, I did worry that the spark plug simply lying on top of the head didn't provide good enough contact.   

Carbs are on there way to RPM for refurbish.  I tried to do it myself but they are in really tough shape; and so after I broke one choke plunger that was essentially welded in place and boogered up the slot in a pilot jet screw, boxed 'em up and sent them to Cali.

Appreciate the help once again...

 


Title: Re: Ignition Coils
Post by: Bones on August 28, 2019, 02:56:13 AM


Carbs are on there way to RPM for refurbish.  I tried to do it myself but they are in really tough shape; and so after I broke one choke plunger that was essentially welded in place and boogered up the slot in a pilot jet screw, boxed 'em up and sent them to Cali.

Appreciate the help once again...

  

Don’t worry about your coils, I think you’ve just self diagnosed your problem. Electrical systems on bikes are usually pretty reliable and just don’t stop working if not ridden for a while. I guarantee when you get the carbs back and hit the button it’ll fire straight up.


Title: Re: Ignition Coils
Post by: Tuned forks on August 28, 2019, 05:48:40 AM
Sending your carbs to Robert may be the smartest motorcycle move you have made.  I just sent my second set to him.  You will not be disappointed.

Joe


Title: Re: Ignition Coils
Post by: rlucas on August 28, 2019, 07:02:41 AM
^^^^^^  This. You will be amazed.

rossi




Title: Re: Ignition Coils
Post by: FJ_Hooligan on August 28, 2019, 03:18:23 PM
Now I'm disappointed.

When I saw that Rock was the latest poster in this thread I was anticipating poking fun at someone with the name of Lucas giving electrical advice.  :-)

Oh well, there's always FB.


Title: Re: Ignition Coils
Post by: Pat Conlon on August 28, 2019, 07:46:55 PM
Classic David!


Title: Re: Ignition Coils
Post by: AppleJack on September 02, 2019, 09:27:47 AM
Happy Labor Day
Received confirmation Friday carbs are safely in California (JIT for a holiday!) 

Looking forward to the return next week and putting some fire in this old FJ!!


Title: Re: Ignition Coils
Post by: AppleJack on October 01, 2019, 01:42:00 PM
Well I'm back after some life interruptions, and have a couple questions - Carb re-install is happily commencing but...

What's supposed to be attached to the nipple on the bottom of the tank?

And, in the group of miscellaneous bits, parts; what are the oval shaped thingies - also two groups of three screws, does anyone recognize them?

TY


Title: Re: Ignition Coils
Post by: AppleJack on October 02, 2019, 02:08:04 PM
Also, can anyone identify the screw with the shoulder on it and where does the metal sleeve belong?


Title: Re: Ignition Coils
Post by: Pat Conlon on October 02, 2019, 03:20:53 PM
Ok, I’ll play...

The oval washers fit in the rubber grommets that hold your tank to the frame.
The (2) 10mm head bolts below fit thru the oval washers.
I am surprised at this question.....have you ever had your tank off?

The bolt with the shoulder and grommet goes to your valve cover.

The 3 JIS screws go to the snorkel on your air box

The 3 10mm head, short bolts attach your battery box.

The steel collar goes thru the grommet (2 grommets total) that attaches your gauge cluster to the fairing.
The collar can also go thru the grommets that attaches your fairing to the frame and the fuse box lid to the side panel and the oil cooler grommets.

The fuel tank nipple goes to a vent tube within your tank that draws off fuel vapors and allows the vapor to be pulled to 2 charcoal canisters as part of the California vapor recovery system.

What do I win? A jelly donut?






Title: Re: Ignition Coils
Post by: Tuned forks on October 02, 2019, 03:58:47 PM
That was impressive Pat.  You get a gold star.

Joe


Title: Re: Ignition Coils
Post by: Pat Conlon on October 02, 2019, 04:51:14 PM
Thanks Joe, but....I might be wrong on those air box snorkel JIS screws.....it’s been so long since I’ve had a air box....those threads on the snorkel screws may be a course sheet metal type of thread for biting into plastic, not the fine thread shown in the picture...I can’t remember now....I do remember there are 3 of them.


Title: Re: Ignition Coils
Post by: Pat Conlon on October 02, 2019, 05:43:34 PM
Ha! No jelly for me....
I missed seeing that bolt with the shoulder and grommet is not a 10mm bolt head at all....it’s a JIS screw!

Robert gets this one....
That grommet bolt is for the timing cover in that post.


Title: Re: Ignition Coils
Post by: AppleJack on October 02, 2019, 07:26:57 PM
Thanks Pat,
I should explain, the bike is the proverbial basket case.  I came by this as a partially disassembled mess!  

These fasteners were laying in the left side cover for the pickup coils and the old tank had been removed and replaced with one that didn't have the inside all gunked up

Couple pics of the previous tank to see why it had to be tossed...

So, can I cap/tape off the nipple on the bottom of the tank?


Title: Re: Ignition Coils
Post by: Pat Conlon on October 02, 2019, 07:38:53 PM
So, can I cap/tape off the nipple on the bottom of the tank?

The vent nipple and vent line should normally be dry, but a splash of fuel could get in the vent inlet, so to be safe I would cap it off. It’s a hot location above the engine so get a thick heavy wall cap.
Now, be sure your tank cap can draw air, this is needed as the fuel level in the tank drops.
You can tell when you open the cap...if there is a sucking type of vacuum when you open the cap, that’s bad.
You need to vent the tank cap.


Title: Re: Ignition Coils
Post by: AppleJack on October 03, 2019, 08:19:19 AM
Don't think this was California bike.  No vent line that I can see.  Thanks so much for the heads up on the filler cap though...


Title: Re: Ignition Coils
Post by: AppleJack on October 03, 2019, 01:30:58 PM
So I figured out that most of the fasteners are for the air box, 3 for the end cap and 3 others to attach it to the rear frame.

Also, what do the fasteners for the fairing vents look like?  And what is missing below and to the rear of the vent on the fairing?


Title: Re: Ignition Coils
Post by: Pat Conlon on October 03, 2019, 03:00:44 PM
You have a broken lower tab on your fairing that the air scoop attaches to...you should have 2 tabs, the upper tab is there but the lower tab is not.
There are reusable black plastic rivets that secure the scoop to the fairing.

RPM Robert....do you have a link? I could not find the rivets when I looked on your site.

The JIS fairing screw fits within the small oval recessed collar you show in your photo.
 (Shown in the photo to be right on the letter A)

You need this collar to spread the load on the fairing plastic and the JIS screw head needs to be recessed so the black fairing trim piece that hides the screw, fits flush with the surface of the fairing.


Title: Re: Ignition Coils
Post by: RPM - Robert on October 03, 2019, 03:17:19 PM
Sure, we have used these on a few 1100s

FJ1100 Air Scoop Rivet (http://www.rpmracingca.com/proddetail.asp?prod=FJ1100FairingRivet)


Title: Re: Ignition Coils
Post by: AppleJack on October 08, 2019, 08:36:20 AM
So, getting close to trying to fire this long asleep beast  I think I see why some of you have ditched the air box in favor of something else.  

The rubber tubes are not close to aligning with the carbs, so what do I do?  Prybar?  I've loosened the carb clamps at the intake a little but still no joy

Top two screws of rear frame section are out and still seems something is preventing air box from going low enough to line up with carb throats...


Title: Re: Ignition Coils
Post by: Pat Conlon on October 08, 2019, 10:53:42 AM
Look closely on the airbox boots you will see an arrow. Align the arrows so they line up with the dots on the airbox thus, the boots will  line up with carbs...

Now, once you get the airbox box in, let’s see if you can figure out how to connect the crankcase vent hose to the airbox.....

On second thought....never mind, throw that airbox far far away....


Title: Re: Ignition Coils
Post by: ribbert on October 08, 2019, 08:20:33 PM

Look closely on the airbox boots you will see an arrow. Align the arrows so they line up with the dots on the airbox thus, the boots will  line up with carbs...


I've never seen arrows, but these are the indicators for lining up the boots, they are eccentrically mounted so as you rotate them their position changes.


(https://live.staticflickr.com/3791/12901767454_38eaa984a8_c.jpg)


It is a difficult enough job with everything aligned, but if not, near impossible.

Noel


Title: Re: Ignition Coils
Post by: Pat Conlon on October 08, 2019, 09:45:57 PM
Thanks Noel....I knew someone had that picture, I just could not remember who....

How come I can remember the lyrics from a song in the 60’s, but I can’t remember why I walked into the kitchen...? 

Cheers


Title: Re: Ignition Coils
Post by: Sparky84 on October 08, 2019, 10:05:44 PM
To grab another beer, Pat

Just go with the flow.

 :smile:


Title: Re: Ignition Coils
Post by: ribbert on October 09, 2019, 07:19:53 AM

....I knew someone had that picture, I just could not remember who....


You could always go out on a limb and put it in the files!  :biggrin:

Noel