Join Date: Jun 2006
Posts: 3
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Fuel Dumping out of Exhaust
Can anyone help? my 2002 F4i Started dumping fuel out of my exhaust system. I've had the injectors tested there working fine. any idea's? Also checked for pinched wire loom, bad ground wire and wire connections. I'm stumped.
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Join Date: Aug 2004
Posts: 2,394
Maybe one of your spark plugs ain't firing. I would pull all four and keep them in order.
V-Twin Moddin
Join Date: Jul 2004
Location: SE Michigan
Posts: 38,916
and good call by NW-Chris
aka Gas Man
Was: 2002 Kaw ZX-9R
IS:
is me till the 
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Join Date: Jun 2006
Posts: 3
Everything is working fine in that department, Have spark and replaced all the plugs. any other advice? Thanks for the reply
V-Twin Moddin
Join Date: Jul 2004
Location: SE Michigan
Posts: 38,916
You haven't installed a Power Commander or similar have you?
-Chris
aka Gas Man
Was: 2002 Kaw ZX-9R
IS:
is me till the
Join Date: Jul 2005
Posts: 24,016
This sounds crazy mang. 
Join Date: May 2006
Posts: 20
Gas only comes in one way and out one way. There is something going on with either timing or the plugs. When did you notice this happing? Are you sure you bought the right plugs? Because in 2 strokes if the plugs aren’t hot enough you get sh1t out the tail pipe.
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Join Date: Oct 2004
Location: Western N.C. (The Great Smoky Mountains)
Posts: 20,168
Ejector constantly spraying, Valve train not doing its job, A dead plug or coil, bad fuel map due to Power Commander or bad ECM or both.
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Join Date: Apr 2006
Posts: 263
Quote:
Originally Posted by jeeps84
Ejector constantly spraying, Valve train not doing its job, A dead plug or coil, bad fuel map due to Power Commander or bad ECM or both.
Join Date: Jun 2006
Posts: 3
I'll I can tell you at this point is ther fuel injectors are staying wide open, I'm in the process of cleaning all the connectors again and checking the ground wires. but what's happening is the bike is hydro locking because of two much fuel. Once I check the ground wire's I'm going to try a new ECU from a friends bike. I'm hoping that works. But no it has nothing to do with spark or spark plugs I've tested it all not once not twice but three times. I've even had two honda dealers turn it away because they were stumped. Thanks for the info and keep coming with advice. and to answer your question there's no power commander.
Last edited by gishsm; 06-29-2006 at 10:28 PM.
Join Date: Jul 2005
Posts: 24,016
with the fix man.Join Date: Apr 2006
Posts: 2,142
Gishsm, Good luck with the fix. hopefully its something simple and not a major failure or load of dirt in the injectors. I hate even THINKING that, it means lots of $$$ to fix.
First 1000 Member
Join Date: Jun 2005
Location: HBG PA
Posts: 360
just a quick ? was there a valve job done or any previous motor work to the bike. Did you try removing the exhaust and turnin the motor over to see if it is on cylinder coming out of or all 4?? That would help in the troubleshooting process a great deal
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