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91 ranger with 91 5.0 swap misfire


stranger_5oh

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I have a ghost misfire living in my engine... I've been having this problem for quite a while but I've changed plugs/wires, MAF and TPS... I have also checked firing order, timing @ 10 degrees adv, no vacuum leaks, 42psi fuel pressure, got good spark and went as far as to lap the valves to rule that out but when I drive the truck it cuts out like it's missing... I have another cap and rotar I plan on putting on and testing voltage to the TPS... Other than that I'm out of ideas

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