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Author Topic: Fuel pressure  (Read 2110 times)

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Offline TurboCajun

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Fuel pressure
« on: November 30 2014, 09:47:59 PM »
Turn the key on fuel pressure goes to 40 psi but as soon as the pump stops the pressure goes down to 30 then slowly bleeds down. Fairly new pump, regulator and gauge, I seem to remember on a freinds car that his does not drop
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85 GN -- Converted to 87 set-up using 66/72 turbo, front mount I/C, 80lb injectors,gn1 heads 14 bolt 1.65 roller rockers stud mount, ported intake with plate, fuel hot wire, 3" dp, running 24psi., alky kit, stroker 20 over, 212/206 roller,  best time 10.995 @ 121 1.56 60ft

Offline Steve Wood

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Re: Fuel pressure
« Reply #1 on: November 30 2014, 11:38:46 PM »
can be a sorry check valve in the pump, leaky injector, or a bad diaphragm in the regulator...No rmally it drops more slowly than that

did you figure out if the puck was not covering the hole?
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Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline TurboCajun

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Re: Fuel pressure
« Reply #2 on: December 01 2014, 08:42:33 AM »
no Steve I haven't , but will try to check it during the week.
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85 GN -- Converted to 87 set-up using 66/72 turbo, front mount I/C, 80lb injectors,gn1 heads 14 bolt 1.65 roller rockers stud mount, ported intake with plate, fuel hot wire, 3" dp, running 24psi., alky kit, stroker 20 over, 212/206 roller,  best time 10.995 @ 121 1.56 60ft
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