Fuel Dumping out of Exhaust - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 13 (permalink) Old 06-26-2006, 09:54 PM Thread Starter
 
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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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post #2 of 13 (permalink) Old 06-27-2006, 12:28 AM
 
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Maybe one of your spark plugs ain't firing. I would pull all four and keep them in order.
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post #3 of 13 (permalink) Old 06-27-2006, 12:19 PM
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and good call by NW




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post #4 of 13 (permalink) Old 06-27-2006, 10:56 PM Thread Starter
 
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Everything is working fine in that department, Have spark and replaced all the plugs. any other advice? Thanks for the reply
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post #5 of 13 (permalink) Old 06-28-2006, 04:30 AM
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You haven't installed a Power Commander or similar have you?




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post #6 of 13 (permalink) Old 06-28-2006, 06:34 AM
 
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This sounds crazy mang.



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post #7 of 13 (permalink) Old 06-28-2006, 12:31 PM
 
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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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post #8 of 13 (permalink) Old 06-28-2006, 01:25 PM
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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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post #9 of 13 (permalink) Old 06-28-2006, 02:33 PM
 
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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.
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post #10 of 13 (permalink) Old 06-29-2006, 10:25 PM Thread Starter
 
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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.
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post #11 of 13 (permalink) Old 06-30-2006, 06:53 AM
 
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with the fix man.



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post #12 of 13 (permalink) Old 06-30-2006, 07:02 AM
 
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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.
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post #13 of 13 (permalink) Old 07-05-2006, 10:12 AM
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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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