SO I Finally bought a compression tester and did a compression tester on the van.
All but one cylinder has good compression.. one cylinder has zero compression!
I don't know how this could have happened! It's a low mileage engine..108k.. Did I cause this problem? Could a weak cylinder be the reason it had been throwing a knock sensor code??
Any suggestions what it could be? probably the rings?
Thanks in advance,
Any Advice is appreciated