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Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

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Old 10-03-2007, 11:07 PM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

just a regular walbro 255 and its a AEM FPR i also replaced it with a stock on that didnt make a diff.
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Old 10-04-2007, 01:12 AM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

---- IT its fixed=NO Boost
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Old 10-04-2007, 02:22 AM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

did you check the banjo fitting on the end of the fuel rail and make sure it has the right washer in it, or has a hole drilled in the rail... if not just drill a hold in it so the gas can flow.. i've had that happen 3 or 4 times.
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Old 10-04-2007, 02:37 AM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

Originally Posted by Random Hero
did you check the banjo fitting on the end of the fuel rail and make sure it has the right washer in it, or has a hole drilled in the rail... if not just drill a hold in it so the gas can flow.. i've had that happen 3 or 4 times.
Yep has correct washer/holes in the rail. The car just started doing this after i put 550's in, it was fine with 450's
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Old 10-04-2007, 03:30 AM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

walbro
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Old 10-04-2007, 03:43 AM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

Originally Posted by fe3tcourier
walbro
eh i dont think so the first one was new, and the 2nd one worked fine in my buddys car
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Old 10-04-2007, 03:48 AM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

That is it you give up
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Old 10-04-2007, 04:32 AM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

did you try re-intsalling the 450's?
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Old 10-04-2007, 09:04 PM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

Originally Posted by chris
did you try re-intsalling the 450's?
nope i sold them before i knew of this problem I dont see how injectors would make fuel pressure drop off in boost but who knows
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Old 10-04-2007, 10:09 PM
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Default Re: Fuel pressure drops off in boost. :::::::::::::HELP::::::::::::

Originally Posted by 88dx
nope i sold them before i knew of this problem I dont see how injectors would make fuel pressure drop off in boost but who knows

The current injectors might not be 550's.

Seen it before. If the injector scaling is way off, you can tell.


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