so i overheated my motor about a year ago and now it wont start i have checked everything i have spark(new plugs have black stuff on them) I have gas, i did a compression test 145-145-145-170. would a possible bad bearing in the bottom end cause it not to start?

 

A bad or spun bearing wouldn't cause the motor not to start. Do you have any CEL codes?

Keith

 

ya the o2 sensor, but i got it started... had no spark when the head work was done they painted it, and the gound on the back wasn't good enough i sanded it off and she started right up.... close this please.