I have a miss 2000 ford ranger

i have a miss in number 4 cyl. 2000 ford ranger 3.0 have replaced plugs,wires,cam sencronyzer also cleaned throttle body and air flow sensor new fuel and air filter
Asked Nov 15, 2012
If it always misses on the same cylinder and it's getting a normal spark, the problem has to be something within that one cylinder. I would do a compression test on #4. It could be a sticky valve or a broken ring.
Answered Nov 15, 2012

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