Sounds like you have a cylinder misfiring.
You’ll need to do a load balance test to see which cylinder is dead.
Have the engine idling with a low RPM tachometer hooked up.
Remove one spark plug wire,
Make note of any change in RPM.
Reinstall spark plug wire and move to the next one.
When you get to one and the RPM doesn’t change, that’s the bad one.
Now you know where look, you just have to figure out why that cylinder is dead/weak.
Remember spark plug wires can have 40,000 volts in them. And the electricity can jump about 1 inch at that voltage.
Take precautions and use the proper tools to keep yourself from getting shocked.
Tuesday, December 9th, 2008 AT 9:31 PM