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jax55 · 07-02-2015, 08:52 PM

Could just be a bad spark plug. Try moving #4 plug to another hole and see if the problem follows.
I had the same problem once, and it was caused by the point gap closing due to the rubbing block wearing. Don't ask we why number 4 in particular... that is just what happened.

07-02-2015, 08:52 PM	#2
jax55 Senior Member Join Date: May 2014 Location: Santa Barbara, Ca Posts: 329	Re: # 4 cylinder misfire Could just be a bad spark plug. Try moving #4 plug to another hole and see if the problem follows. I had the same problem once, and it was caused by the point gap closing due to the rubbing block wearing. Don't ask we why number 4 in particular... that is just what happened.