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General Category => Yamaha FJ1100 / FJ1200 Running Problems => Topic started by: sevie on September 16, 2020, 02:07:47 PM

Title: '84 FJ1100 - no power/run, off idle
Post by: sevie on September 16, 2020, 02:07:47 PM
First time starting this year. Ran good last year. Starts fine, choke works good, settles to idle after warm.  Shift into 1st gear, bogs when letting clutch out.  If I pull the clutch back in with throttle, it will continue running.  Throttle seems to work normal.  Ruined my day for a ride!!

What's most likely cause for me to work on?

Thx guys.

Title: Re: '84 FJ1100 - no power/run, off idle
Post by: FJmonkey on September 16, 2020, 03:29:24 PM
Plugged idle jets. I run my bike at least once a month to prevent this.
Title: Re: '84 FJ1100 - no power/run, off idle
Post by: sevie on September 16, 2020, 03:37:57 PM
Thx for the response.
How to fix? Can I dump suitable carb cleaner into tank?
Never had this problem in all the years I've owned the FJ.
Title: Re: '84 FJ1100 - no power/run, off idle
Post by: FJmonkey on September 16, 2020, 03:57:27 PM
I have had some luck with seafoam. If the jets are partially blocked it may help. If they are fully blocked then they need to be removed and given a proper cleaning.
Title: Re: '84 FJ1100 - no power/run, off idle
Post by: sevie on September 16, 2020, 04:21:35 PM
Thx again.  Will try Seafoam
Title: Re: '84 FJ1100 - no power/run, off idle
Post by: FJmonkey on September 16, 2020, 04:35:07 PM
When I used the Seafoam I went for a long ride. I used the choke to keep the engine running. I ran a gear or two lower to keep the throttle in the position that uses the main jets so I could take the choke off at speed. Then I let heat and time do its job. I have also had this not work and pulled the carbs to clean them.