01 929 - 2 cylinders not firing / fuel dumping out exhaust - CBR Forum - Enthusiast forums for Honda CBR Owners


CBR 929RR 2000 - 2001 CBR 929RR Forum

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 04-16-2018, 10:42 AM
Junior Member
Thread Starter
 
Join Date: Apr 2018
Posts: 3
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 !!
Reply With Quote
  #2  
Old 04-16-2018, 11:08 AM
74demon's Avatar
Administrator and MVN, March 2012/Oct 2013 ROTM
 
Join Date: Sep 2011
Location: socal 949/951
Posts: 7,278
Default

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.
Reply With Quote
  #3  
Old 04-16-2018, 12:25 PM
Junior Member
Thread Starter
 
Join Date: Apr 2018
Posts: 3
Default

2 and 3 are fine
1 and 4 are wet - very.
Just checked and the FPR is seeping fuel - a lot.
Reply With Quote
  #4  
Old 04-16-2018, 03:43 PM
74demon's Avatar
Administrator and MVN, March 2012/Oct 2013 ROTM
 
Join Date: Sep 2011
Location: socal 949/951
Posts: 7,278
Default

Get a new FPR and spark plugs.
Reply With Quote
  #5  
Old Yesterday, 01:04 PM
Junior Member
Thread Starter
 
Join Date: Apr 2018
Posts: 3
Default

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.
Reply With Quote
  #6  
Old Yesterday, 01:11 PM
74demon's Avatar
Administrator and MVN, March 2012/Oct 2013 ROTM
 
Join Date: Sep 2011
Location: socal 949/951
Posts: 7,278
Default

Quote:
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.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Cylinders 1&2 not firing!!!! DopeBoy239 F2 Tech 12 07-04-2010 10:27 PM
not firing on all cylinders? DynoMike F2 Tech 10 04-06-2010 09:21 AM
02 f4i dumping fuel out exhaust! smashndubs F4i - Main Forum 8 08-22-2008 08:18 AM
Please Help!! Not firing on all 4 cylinders JJMiller35 CBR 900RR 5 06-12-2008 11:22 AM
Not all cylinders are firing?! JJMiller35 General Tech 2 06-11-2008 06:10 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Advertising
Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 04:09 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.