88 gmc sierra 1500 spitting and sputtering when you drive it but runs good when you floor it ?


Asked by Sep 09, 2014 at 10:50 AM about the 1988 GMC Sierra 1500 K1500 Standard Cab SB 4WD

Question type: Maintenance & Repair

truck starts up and runs but idles high, when you drive it, it spits and sputters no power but
if you gas it good it runs better

6 Answers


Check for vacume hose leak,s.


yes they all checked out


its hard to explain but its like its starving for gas but when you floor it gets gas.. dont know if thats helpful but im sure someone has had the same problem


Have you changed the plug,s and wire,s lately?


i have not i was going to do that and an oil change tonight, i just bought the truck yesterday and he said it cuts off when the truck gets warm.. i drove it easily 10 miles home and not once did it cut off. i just got the normal starving for gas situation, its like its getting gas but its hesitating when you push the pedal.


see i drive a 2001 dodge ram 1500 for work and it needed a bad tune up did something similar to what my gmc is doing, is there a specific type of spark plug i should use for the tune up on my gmc ? i know most dodges like the original spark plugs was just wandering if these gmcs should take the normal factory spark plugs as well.

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