Hard start when warm


Asked by Jan 09, 2016 at 09:40 PM about the 1998 Chevrolet C/K 1500 Cheyenne Extended Cab LB

Question type: Maintenance & Repair

I have a 98 Chevy c1500 with 289,000 miles, and I've been having a
problem with it starting when its warm, after it sits for about an hour or so, it
takes about 2 tries to get it to start and after its running its fine,
I put in an AcDelco Fuel pump, check pressure all is good, new injectors,
new cap, rotor, wires, plugs, coil, ICM, ECM, cam sensor, crank sensor,
and ignition control module. short of tearing the heads off i'm not sure what
else to check.
P.S. when its cold it starts within a second of cranking, absolutely no
problems when its cold.
Any suggestions or help is greatly appreciated.

2 Answers


Fuel pressure was good but how fast did it leak down after the pump shut off? It should leak down at all.


It only went down a couple of pounds after being warm.

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