panamacity347

how can you tell if you have a spun bearing. i hear something that sounds like a bolt in the bottom of my oil pan right near the back of the pan and the flywheel i drained my oil a few weeks ago and the oil looked metallic grey i thought i wiped my cam out. i changed the oil. today i drained my oil it looked black so i stuck a flexable magnet in my oil pan to see if it was a loose bolt in the pan but it didn't pick anything out of the pan.

malo012000

it sounds like a bottom end knock and keeps knocking

Bubba 95SN

Pull engine have a look around the innards. Bubba

nacanitihs

whats the oil pressure?

malo012000

I believe if its the cambearing your pressure would change but if it is a main I dont think so ...

panamacity347

the oil pressure is good. it seems like when you rev it up the knock gets lighter. the motor has less then a 1000 miles on it but it is the first one i built

AdderMk2

if its knocking.. pull it now before the damage is too severe to fix

malo012000

If it is knocking its most likely to be a spun main bearing so I agree with above, pull it before it get worse

mustang queen

First pull the oil filter (You would be lucky if you had the old filter) cut the top off pull the element out and cut some of the paper out of it . Squeeze the paper in a vice to get the oil out of it . Check out the sparkles ,see if they are magnetic if they are not most likely a bearing. Also you can disconnect one spark plug at a time and see if the knock goes away . That will isolate it to one rod bearing

panamacity347

so you think i should pull the motor thats what i was thinking too i was thinking to pull the oil pan and looking inside but it might just be better to pull the motor.