Question about GMC Jimmy
Most misfires are from injector problems /low fuel pressure problems
unless you can be more specific , clean/check injectors
check fuel pressure
check coil packs if individual coils
Posted on Dec 13, 2016
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Posted on Jan 02, 2017
Disconnect the heater hoses from the water pump and the intake manifold. Get a compressor and blow out the hose (put the air hose into the the hose that came off the mainfold. then flush the system and replace the antifreeze.
Posted on Dec 12, 2008
replace fuel filter, air filter, spark plugs, wires, distributor cap /rotor, if you have one. new oil with your filter ? just thought I'd ask, have a auto parts store pull code to see why your service engine soon light is on. this will tell you what sensor needs replaced, I'll bet its the oxygen sensor !
Posted on Feb 23, 2013
MY opinion is the fuel pump pressure is low and allowing vapor in the lines that dissapates over time. But when you make short trips the fuel does not let the vapor out.
Posted on Dec 08, 2013
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