Have you tried testing spark using a plug wire from another cylinder? Plug wires, even new can be bad from the factory. It just happens sometimes, also the little metal connector inside the plug boot can pull off the wire enough to cause weak spark, happened to me twice.


Richard E
1989 Montero - Stock-ish
1989 V6 Auto Raider - 5.3 Vortech Swap.
1987 Mitsubishi Starion 2.6t, soon to be 3.5
1983 Honda XL600R