View Single Post
Old 10-24-2004, 07:15 PM   #10
ImprezaVA
Scooby Specialist
 
Member#: 32846
Join Date: Feb 2003
Chapter/Region: MAIC
Location: Elkton, VA
Vehicle:
1998 Impreza L-SOLD
Arcadia Green

Default

Quote:
I had my oil changed at Jiffy Lube and they put a bit too much.
How much extra? And I take it that it didn't knock before you had the oil changed?

Do you have a CEL?

You could have incorrect valve clearance, worn valve rocker, worn cam, or broken valve spring. However, it sounds like something a little deeper in the block. You said you have a stethoscope, so, locate which cylinder(s) is/are noisy.

Disconnect the fuel injector connector of the noisy cylinder and see if the sound dissipates. If it does, it’s possible you have a worn crank main bearing or worn bearing at crankshaft end of connecting rod. If it doesn’t, it could possibly be a worn valve lifter, cam gear, or worn cam journal bore in the crankcase.

Have you ruled out the knock sensor, bad gas?

-Charles-
* Registered users of the site do not see these ads.
ImprezaVA is offline   Reply With Quote