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#12
Parts Wanted / Re: FJ1200 choke starter cable...
Last post by MarioR - March 12, 2026, 08:39:09 AM
Posted in wrong section  :Facepalm:

Should be WANTED FJ1200 choke starter cable.

If moderator can move to PARTS WANTED, that would be great.
#13
Happy to help
#14
Quote from: Pat Conlon on March 10, 2026, 03:18:33 PM
Quote from: Warp84 on March 10, 2026, 12:22:32 PMDo you have a testing procedure I can run through on it?



There are 2 vacuum lines on our Early FJ's. Cylinder #1 port vacuum line goes to the petcock and cylinder #2 port goes down to the ignition box. The purpose of the #2 vacuum line is to advance the ignition timing *upon closed throttle* (for emission reasons)  as discussed here:
https://fjowners.com/index.php?topic=11690.0

On the early FJ's ('84-87) the vacuum diaphragm is internal in the TCI ignition box and is non serviceable, non replaceable and the later '88-95 FJ's have the vacuum advance as a stand alone module, separate from the DCI ignition box. As our bikes age, this diaphragm can become cracked, thus leaking vacuum...causing a hanging high idle, what Robert was referring to....

How to test? We call this the suck test. Disconnect the vacuum line at the #2 intake port, clean the end, and suck on the hose. Put your tongue over the end of the hose to hold the hose under vacuum. The vacuum hose should stay under vacuum...if it bleeds off or if you can draw air through the hose, either the ignition box diaphragm is leaking or your hose is leaking. The hose replacement is easy, not so much the ignition box internal diaphragm.

Solution: Cap off the #2 intake port, use the heavy rubber oem Yamaha vacuum caps. It's hot in this area in front of the heat shield.
As discussed above there will be no performance loss with this vacuum feature disconnected.

Cheers....hope this helps.

Pat

Pat,

Low and behold that was part of the issue. The Diaphragm in the DCI had failed, as instructed, I put a cap over the vacuum nipple.  A bit more fiddling with the needles and it no longer stops at 4k rpm either. Both on centerstand and under power. Thanks to you and Robert for your input and solving the vacuum leak.
#15
Modifications / Re: 17" Wheel Conversion Woes
Last post by Pat Conlon - March 10, 2026, 11:15:05 PM
Perfect Billy!
#16
FJ Luggage & Hard / Soft Bags / Re: Hepco & Becker Junior 30 v...
Last post by Redtk421 - March 10, 2026, 03:32:07 PM
Hey thanks, right back at you! Always loved the red and white FJs. The windscreen was done by the previous owner who was 6'3". He said it was like night and day as far as riding with the original. Highly recommended! I'm 5'9" and I love it!
#17
Quote from: Warp84 on March 10, 2026, 12:22:32 PMDo you have a testing procedure I can run through on it?



There are 2 vacuum lines on our Early FJ's. Cylinder #1 port vacuum line goes to the petcock and cylinder #2 port goes down to the ignition box. The purpose of the #2 vacuum line is to advance the ignition timing *upon closed throttle* (for emission reasons)  as discussed here:
https://fjowners.com/index.php?topic=11690.0

On the early FJ's ('84-87) the vacuum diaphragm is internal in the TCI ignition box and is non serviceable, non replaceable and the later '88-95 FJ's have the vacuum advance as a stand alone module, separate from the DCI ignition box. As our bikes age, this diaphragm can become cracked, thus leaking vacuum...causing a hanging high idle, what Robert was referring to....

How to test? We call this the suck test. Disconnect the vacuum line at the #2 intake port, clean the end, and suck on the hose. Put your tongue over the end of the hose to hold the hose under vacuum. The vacuum hose should stay under vacuum...if it bleeds off or if you can draw air through the hose, either the ignition box diaphragm is leaking or your hose is leaking. The hose replacement is easy, not so much the ignition box internal diaphragm.

Solution: Cap off the #2 intake port, use the heavy rubber oem Yamaha vacuum caps. It's hot in this area in front of the heat shield.
As discussed above there will be no performance loss with this vacuum feature disconnected.

Cheers....hope this helps.

Pat
#18
General Discussion / Re: 1990 FJ1200 STOLEN
Last post by Pat Conlon - March 10, 2026, 03:00:53 PM
Best news of the day!
#19
General Discussion / Re: 1990 FJ1200 STOLEN
Last post by MarioR - March 10, 2026, 02:35:17 PM
Quote from: 86FJNJ on March 10, 2026, 01:54:10 PMwow that's great news! and kind of a surprising ending, I wonder if it was a joy ride or if somebody realized moving a rare bike on the black market will be difficult.

Ok time to put a GPS tracker on it, a padlock on the rotor and a security camera facing it whenever it's parked.

Looks like they took it just to try to make a couple of bucks for drugs... unfortunately  :negative:

They damaged the ignition but weren't able to start the bike. They also tried to remove the seat, but it looks like that didn't work either. They even tried using a pry bar on the tank... no luck  :Facepalm:

Basically, they didn't really know what to do with it. Since it was posted everywhere, they probably decided it was better to ditch it than deal with the consequences.

After several failed attempts, they gave up and left it.

Definitely getting an Apple tracker and keeping it stored inside from now on  :morning1:
#20
General Discussion / Re: 1990 FJ1200 STOLEN
Last post by 86FJNJ - March 10, 2026, 01:54:10 PM
wow that's great news! and kind of a surprising ending, I wonder if it was a joy ride or if somebody realized moving a rare bike on the black market will be difficult.

Ok time to put a GPS tracker on it, a padlock on the rotor and a security camera facing it whenever it's parked.