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Q:

what causes my blazer to miss fire on the number four plug when it gets warm
on 2001 Chevrolet Blazer

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when put on the computer it shows the number for plug to be miss fireing but it only does it when it get warm up
(1) Answer
(1) Comments
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COULD BE PLUG, WIRE OR A NUMBER OF OTHER THINGS
ok ive changed the plug wires the rotor,distributer cap,plugs coil pack and the spider full injection valve its still running rough and computer is reading number 4 cylinder miss fire but it only starts to run rough when the engine is warm any other suggestions what am i missing here help please
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