I have a 1998 GMC K1500 with an no start condition.

5

Asked by Nov 02, 2016 at 03:08 PM about the 1998 GMC Sierra 1500 K1500 SL 4WD Extended Cab LB

Question type: Maintenance & Repair

I can spray carb cleaner into the intake and it will fire. I have over 60Psi. fuel pressure, I performed injector balance test and all injectors are firing the same with scanner. After injector balance test, truck started and ran till fuel from test was burned off. I have cranking RPM and reference signal. I have no codes. Apparently injectors do not fire while engine is turning. Where should I go from here?

3 Answers

140

60 psi sounds way too high. Normal fuel pressure is between 25-35 psi

5

Specification for SFI is 60-66 PSI

140

Ah. My bad. Im thinking about older trucks

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