Long cranking, high pressure fuel pump?
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Long cranking, high pressure fuel pump?
Hey everyone, quick question regarding fuel pressure on a cold engine. On Cayenne base 3.6, when the ignition is on but the engine isn't started, should the high-pressure fuel pump pressure be the same as the low-pressure fuel pump?
I'm experiencing long cranking only on a cold engine, and I suspect the HPFP is failing. Sometimes the engine starts after long cranking but immediately turns off. However, if I try starting it again, it starts right away. No codes.
I'm experiencing long cranking only on a cold engine, and I suspect the HPFP is failing. Sometimes the engine starts after long cranking but immediately turns off. However, if I try starting it again, it starts right away. No codes.
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