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Timing and fuel filter are fine. How do you check coil?


Replace it with a new one. They're around 15 bucks. You can test the resistance across the primary, and secondary windings also, but I do not remember the range, and it's always eaiser for me to just put another coil in there to see.

Under heavy load they can break down, and not put out enough spark.

87 Raider 4D56td v5MT1
31's..Basically Stock