Questions & Answers for: GMC hard start when cold Cars & Trucks

...when cold then hard start when warm Check fuel pressure, and regulator. A leaking regulator gives a warm engine more fuel [ it does not like it] a cold motor does. same as a flooded motor. Good ...

hard starting first thing in the morning. But during the day the car drives great. Check the power to the cold start injector. (it's only going to have fire for a few sec. after the key is turned on).

...hard when engine is cold My 1997 Jimmy has to try to start 3-10 times when the engine is cold, it fires once or twice but won't start. after doing this 3-10 times, (the number of times is getting ...

...HARD TO START WHEN COLD AND HOT.USUALLY STARTS ON SECOND TRY. 02 sierra 1500 5.3 starts very quick when cold but when hot cranks a lot before starting,I replaced fuel pump and filter did not help.It ...

1996 gmc hard to start when cold but start good when hot i changed fuil filter Check the fuel pressure cold. Sounds like a weak fuel pump.

...start unless its warm. When is the last time you had a tune-up on your truck? During the cold winter months, if the battery does not have a proper level of cranking amps it is sometimes hard for the ...

...hard but will start . could this be fuel pressure regulator what what happens to make for lean air fuel mix during cold start in 80's had a cold start injector what happens with obd2 this is a 97 gmc ...

Hard to start when its cold If you have access to a scan tool, you should see what value the ECT (Engine Coolant Temperature) sensor is reporting. The engine needs more fuel when cold and if the ECT ...

...hard start runs good Could be a number of things, but I would start with the engine coolant temp. (Ect) or air temp sensor. These will control your air fuel ratio and make it hard to start. I had a ...

...fluid to intake it starts and runs fine. after engine is warmed up it runs great. no codes showing. Have someone check your fuel pressure regulator, hard cold start can sometimes be caused by