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Car Dumping Fuel 

 

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 Post subject: Car Dumping Fuel
Posted: Sun Dec 24, 2006 2:55 pm 
Getting Side Ways
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Hey guys,

I have an EL XR6 with 4480s, a high flow cat and 2.5" Lukey. When i peg it from a standing start and change gears at the rev limiter it seems to be dumping a fair bit of fuel out the back (i can see it in my side mirror). I really hope it is fuel for a start, my mate driving behind me said it was a greyish black colour so thought it was just excess fuel. Do high flow cats and well-flowing exhaust systems tend to dump more fuel out of the exhaust? Should i be worried?

Cheers, Kyron.

 

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Posted: Sun Dec 24, 2006 3:00 pm 
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wouldnt stress too much as my car does that too with the foot flat. i would rather it dump fuel at full throttle than run lean :shock:

 

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Posted: Sun Dec 24, 2006 3:19 pm 
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Now you need a spark plug in the exhaust to tip to light it up. :lol:

I haven't noticed anything in my mirrors while flooring although I suggest if you can see it from your mirrors then its dumping a little too much.

 

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Posted: Sun Dec 24, 2006 3:28 pm 
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LOL @ spark plug in the exhuast! But since you mentioned it maybe my spark is a little on the weak side, causing a bit more than normal unburnt fuel :? Dunno if that's a possibility

 

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5spd Heritage Green EL XR6. Wheels by ROH. Stereo by Clarion. Exhaust by Pacemaker & Lukey. Suspension by Whiteline, Durashock and K-Mac.

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Posted: Sun Dec 24, 2006 9:16 pm 
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well if its fuel, you've got a s**t load going in, or an ignition problem. i'd check the plugs and see if they are sooty or something, maybe swap them out.

go out to an empty housing development or something and give it a run and go back and see if anythings there. least you'll know what the hell it is.

oh, and you do know the cat actually creates water too? thats why so many exhausts rust out amongst other things

 

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Posted: Sun Dec 24, 2006 9:40 pm 
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All factory cars run rich flat out so probably nothing to be to worried about. If you want to be sure, run a diagnostics on the ecu and see if it picks up any faults or throw it on the dyno with a WB up the pipe.

 

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Posted: Sun Dec 24, 2006 10:29 pm 
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Thanks a heap for all the help guys :) I will get diagnostics run on my ecu at my next service coming up.

 

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