I have a 1995 Dodge Grand Caravan with the 3.3 L 6 cyl. with only 40,000 miles on it
The number 6 cylinder is not firing.
Things I've checked are:
the fuel injector
spark plug
spark from coil
fuel pressure
compression test
valve spring
couldn't detect any vacuum leakS
These all checked out fine, but the no. 6 just won't fire
could it possibly be the computer (ECM)
thanks
oldlunchbox@comcast.net

Have you tried a different spark plug and wire on that clyinder?? What are the compression numbers?? Whats condition of spark plug (gap at proper setting). Do you need to add any coolant at intervals??

Check to see if the injector is getting power. One wire should have power all time with the ignition in the "run" position. The other should be grounded by the ECM at the appropriate time. See if Advanced Auto will loan you a test kit for this. You just unplug the wire from the injector and plug it in to the test bulb. Have someone crank the engine and look for the bulb to light up. It should actually pulsate.

Looks like you've touched all the bases. I can only think you may have missed something somewhere. Can you tell us exactly how you checked all those bases?

Your post implies you've checked for spark and fuel and they were there. Not the ECM.