Test the resistance in the wire. It should have about 30000 ohms of resistance ( a rule of thumb on spark plug wire resistance is 10000 per foot). Try switching number 2 plug wire with number 3 -- they are close to the same length. See if the problem switches to cylinder 2. If it does then it is the wire. Remember to use A/C Delco ignition parts ONLY on these engines. Aftermarket will only lead to more headaches.
Do you have a digital multi-meter to test for voltage and resistance? If not then I suggest purchasing one or borrowing one. Actron automotive multimeters are the best bargan out there, they are sold at Sears and most automotive parts stores, and they are well worth the 60 bucks or so.
Your problem is electrcal, the fact that the engine fires when you disconnect cylinder 3 plug wire is strange. It may be that wire causing the problem - but it is not likely because you found that all 4 cylinders on one side were wet with fuel.
What about the crank sensor? Did you re-install the sensor or did you replace it? If you replaced it, did you have the computer reprogramed to see the new sensor?
The compression seems good, but check all the cylinders. Eventhough it is about 120PSI or so, all of the cylinders must be within 10% or 12% of eachother. If not then the knock sensor may send a trouble signal to the computer.
Did you check the ground to the ignition control module.(It is the black wire on the plug). It should have zero resistance to ground.
Wednesday, January 6th, 2010 AT 4:16 PM