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You can also use that wire for a different plug and see if the spark intensity changes. If it's still weak, then it's most likely just the wire. Pull the plug and clean it/ gap it. If the spark was weak it may be somewhat fouled.


Did that test and the wire/plug seems fine, looks like it's the #1 outlet on the cap that's not giving a strong spark. I will get a new cap and rotor tomorrow and hopefully that fixes it otherwise, as said above, must be the sensor inside the contributor.

1989 Montero 4dr V6 3.0l