I purchased a 98 ranger 3.0 w/ 5speed it had a mis when i purchased. Engine sounds like its not releasing all comp. It had ck engine light on. it said cyl 5 mis. I replaced plugs and wires. Ck fuel psi and tried moving injector from side to side.Sounded like whistle throught intake replaced cats still mising took valve covers off looked like valves move freely. Does anybody have any ideas ?
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