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01 929 - 2 cylinders not firing / fuel dumping out exhaust

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01 929 - 2 cylinders not firing / fuel dumping out exhaust

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  #1  
Old 04-16-2018, 10:42 AM
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Default 01 929 - 2 cylinders not firing / fuel dumping out exhaust

Hello experts.
I have an 01 929....its been sitting for quite some time and wouldn't start.
With the help of a friend we took the fuel pump out and cleaned everything, including the inside of the tank. It wasn't too bad, but the fuel pump wasn't working prior to the cleaning.
When we put it all back together, the fuel pump worked and the bike started immediately and it seemed to be fine.
We let it idle for a while, cracked the throttle a few times and everything seemed completely normal. So we were quite pleased.
THEN, we put all the tools away - and about an hour later went to start the bike again. Now, cylinders 1 and 4 are not getting hot. And fuel is dumping out of the exhaust.
We then dug back into the bike. We removed the plugs and coils, and swapped them with cylinders 2 and 3, and the issue remains with cylinders 1 and 4.
So we are scratching our heads.

Has anyone ran into this ?
Any suggestions here ?

Thanks !!
 
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  #2  
Old 04-16-2018, 11:08 AM
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Were the plugs wet on 1 and 4? What did the plugs on 2 and 3 look like?

You've ruled out a spark issue by swapping coils. You've got a open injector problem if only 1 and 4 are wet or a FPR issue if they are all wet.
 
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  #3  
Old 04-16-2018, 12:25 PM
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2 and 3 are fine
1 and 4 are wet - very.
Just checked and the FPR is seeping fuel - a lot.
 
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Old 04-16-2018, 03:43 PM
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Get a new FPR and spark plugs.
 
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Old 04-18-2018, 01:04 PM
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FPR on the way.
I'll update the post here on the outcome, just in case it may help someone else out in the future.
 
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Old 04-18-2018, 01:11 PM
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Originally Posted by ToddinATL View Post
FPR on the way.
I'll update the post here on the outcome, just in case it may help someone else out in the future.
Please do.

When your all done, change the oil before you ride it. The oil will most likely have some fuel mixed in it.
 
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