not keeping fuel pressure
08-09-2007, 01:03 PM
#12
5th Gear Member
Join Date: Jan 2006
Location: Puerto Rico
Posts: 3,926
RE: not keeping fuel pressure
Pressure leak down test:
1. Turn FP on for 10 seconds.
2. Notice pressure reading when turned off.
3. If pressure drop >5psi after 60 seconds of turning the FP off, you either have a bad FPR, check valve (=FP) or a leak in the system.
4. Block return line and repeat test, if pressure holds = FPR is snafu
5. If 1-4 = fail....remove pressure line from fuel rail, attach FP gauge to pressure line, repeat 1-2.....if leak down fails, FP is bad, if not.....there's a leak in the injectors.
Other than the fuel pressure readings.....any problems with car?
1. Turn FP on for 10 seconds.
2. Notice pressure reading when turned off.
3. If pressure drop >5psi after 60 seconds of turning the FP off, you either have a bad FPR, check valve (=FP) or a leak in the system.
4. Block return line and repeat test, if pressure holds = FPR is snafu
5. If 1-4 = fail....remove pressure line from fuel rail, attach FP gauge to pressure line, repeat 1-2.....if leak down fails, FP is bad, if not.....there's a leak in the injectors.
Other than the fuel pressure readings.....any problems with car?
Thread
Thread Starter
Forum
Replies
Last Post
