Mister Willie

I'm almost positive the 3rd cylinder on my 85 (87 engine) is the one missing. I checked all the electrical and ground connections I can think of. I pulled the spark plug and it wasn't wet or anything remarkable about it. It did seem a bit wide on the gap, but I didn't pull another to compare.

When I accelerate from a stop, the 3rd starts missing until the truck is moving a bit. It doesn't really miss at higher speeds, just low speeds under a load, like when starting motion.

I'm guessing

Timing
Wires & plugs
fuel injector on this cylinder


Anyone got any other suggestions?

DeathCougar

iTrader: (23)

Those would be the three main things to check. What kind of wires are you using? You need to get an ohmmeter and check resistance of the wires.