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View Full Version : Cylinder four wont fire 1991 240sx


Erik02
09-19-2011, 05:13 AM
KA24DE
New distributor, plugs, wires.

Cylinder four will only intermittently spark when not in the head, putting it in it makes no attempt to fire.
I just performed a compression test and all four cylinders are at 175 psi. Moving the wire for cylinder four to cylinder 3, and moving it on the distributor, results in cylinder 3 getting spark. So, the wire is good. Swapping wire three to cylinder four, and on the distributor, results in the exact same thing. Spark when held up against a bolt or something, but nothing when I go to put it on the plug. I'm out of ideas as to what it can be and have had a few people look at it with no success.

Timing has been checked for the hell of it, MAF is working properly, and....that is all that I can currently think of that I have checked.