Well lately on ocassion I've had longer cranking times then went into limp. Reading the codes I had a low fuel rail pressure. I cleared the code and its back to itself with the occasional long starting cranks. Not sure if it's the in tank lift pump or the high pressure pump. Filters were changed 15,000 km ago.

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92 e300d2.5t
01 e320
05 cdi
85 chev c10