Question about 1995 GMC Jimmy

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Starts runs good for a while,then will miss like loseing fire or fuel,does it speratic and sometimes alot sometimes once or twice

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You will need to pin down if its fuel or spark, check the sparkplug wires and cap and rotor, then put a fuel gauge on it and see if it looses fuel preasure. if i remember this has the spider injection system it may be due to that also, a scope would be good to find the cylinders that are misfiring, this would tell us if its the same cylinder or does the misfire move to all cylinder. start with checking and maybe replacing the cap, rotor and wires and then see if it acts up. also take a look at the coil. good luck and have a good day.

Posted on Mar 17, 2011

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