Random misfire cylider 4
#1
Random misfire cylider 4
I have a misfire number #4 . I had already changed both coil packs , my thinking is plug or plug wire. question can I use timming light to check ,if it lights firing if not .not firing? . I had problems with fuel injectors in past and changed 2 of the 4 cylinders injectors for flooding cylinders
#4
A test light. The coil has 12 volts with the key on. The PCM grounds it to fire so a test light connected to the positive side of your battery and probing the ground circuit of the coil will flash. Did you replace the plug wires? A bad injector is uncommon. A dirty injector with a bad spray pattern is common as dirt. A bottle of Techron in the gas tank will quickly cure the latter.
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CardsFan420
Mazda Millenia
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11-08-2006 06:25 PM