Fuel Injector Leakdown Time?
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Joined: Aug 2009
Posts: 316
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From: Houston, TX
Car: 90' Firebird Formula 350
Engine: 350
Transmission: 700R4
Axle/Gears: 3.23
Fuel Injector Leakdown Time?
Does anyone know the specification for how long is acceptable for fuel injectors to hold pressure?
I have pinched off the feed and return lines,(ruling out the regulator and the fuel pump) and in about 40 min the fuel pressure will drop from 50psi down to around 20psi.
Before I drop a bundle of cash on some new injectors(there are 4 that are slowly seeping fuel), I thought I would find out the acceptable range. I cannot find this specification anywhere.
I have pinched off the feed and return lines,(ruling out the regulator and the fuel pump) and in about 40 min the fuel pressure will drop from 50psi down to around 20psi.
Before I drop a bundle of cash on some new injectors(there are 4 that are slowly seeping fuel), I thought I would find out the acceptable range. I cannot find this specification anywhere.
Supreme Member
Joined: Jan 2011
Posts: 1,732
Likes: 4
Re: Fuel Injector Leakdown Time?
Thats not too bad. Make sure the fuel pressure regulator isn't causing the leak.
You can always get your injectors cleaned on the car, find a shop the uses BG44k injector cleaner, have them do a double dose.
You can always get your injectors cleaned on the car, find a shop the uses BG44k injector cleaner, have them do a double dose.
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