Fuel pressure @ 43 w/ vac line unhooked

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02-20-2011, 10:52 AM

camaroeater

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Fuel pressure @ 43 w/ vac line unhooked

So my fuel pressure is reading 34 w/ vacuum line hooked up and 43 w/ it unhooked. Do you guys think it a little too high?

02-20-2011, 02:11 PM

AdderMk2

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it is a little high, but nothing to be overly concerned with.

02-20-2011, 05:19 PM

camaroeater

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My car has been running rough, so I wanted to make sure the FP wasn't the cause.

Thanks Adder!

02-21-2011, 12:00 AM

AdderMk2

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its supposed to be closer to 39PSI, but I dont feel that it warrants replacing the FPR for that.

02-21-2011, 04:59 PM

Venomantidote95

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Injectors are flowed at 43.5 pounds during flow testing, thats how they determine tje lbs per hr rating, thats just fine, should be 38/39 with vac line hooked up!

02-21-2011, 05:00 PM

Venomantidote95

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Normal frp pressure drop between 4&6 lbs!

02-22-2011, 03:22 PM

lxman1

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Mine runs 34 idle with vacuum and about 44 with no vacuum. It runs fine as mentioned above. Might pull the plugs to make sure they are fairly clean and all look the same.