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View Full Version : 86 350x started making this loud knocking when running...



MulletMan420
01-19-2015, 07:54 PM
Well, my buddy broke my 350x. He was riding it normally, not really hogging on it to much, and then he stalled it. When he kicked it back over it was running normal, but is making this loud knocking noise that sounds like it might be coming from the cylinder. It did not loose any compression, so its not blown up. We pushed it over to my shop and started it again for a guy we know and he said he thinks it may be the wrist pin, a ring, or a bent valve. This is the first major mechanical issue like this i have had,so im not really sure:wondering. Has anybody had something like this happen?

atc007
01-19-2015, 09:05 PM
Most likely connecting rod lower bearing. If it was a rattle.\,, Timing chain. Not bent valve. Does it smoke? Checked the oil?

MulletMan420
01-20-2015, 08:22 PM
It doesn't smoke and the oil is good. Fresh this spring.

Samjp22
01-20-2015, 09:47 PM
Oil is fresh this spring? Since spring hasn't happened yet you mean 2014 spring? That's a long time without changing oil if you ride it frequently