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Old 08-17-2010, 07:06 AM   #19
fdryer
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Join Date: Jan 2006
Location: NYC
Posts: 45,240
 

2003 L-Series 3.0L Sedan
Default Re: Can't seem to fix this car?!?

Other than observing the fuel pressure fluctuate, injector leaks are probably hard to check other than pulling the fuel rail out along with the injectors to lay out in the open and connected with ignition turned on; as soon as the fuel pump cycles (2-3 seconds), pressure will be at the injectors and shouldn't leak at all. Any leak from any injector will be obvious. In the engine with the ignition ON the injectors just sit still until the engine cranks over. The cps generating timing signals turns on the ecm and the ecm starts the EFI system; turns on the fuel pump, initiates the ignition system, and pulses the injectors. No engine turning over = no injector pulses. There should be no fuel coming out any injector valve.
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