M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => Engine + Driveline => Topic started by: KenC on August 28, 2008, 02:08:51 AM
-
A few days ago, I noticed that my engine, under load (doesn't do it at idle), was making noises as if there was a handful for quarters under the hood.
I popped the hood and pinpointed it to where the timing chain tensioner is, at least the front left portion of the engine (if you were looking straight at it).
I put a new timing chain tensioner in and the noise is still there. After this, I naturally I suspect perhaps one of the guides has broken or something, so I rip the entire front portion of the motor off and see nothing out of the ordinary. Yes, my gears are a little worn, but all of the rails/guides look just fine.
Any ideas as to what could be causing this noise?
-
Water pump? Maybe a little slack in the chain?
-
What sort of noise would the water pump make? I don't think the noise could have been made by it.
Would chain slack be gradual? The engine sounded totoally fine one moment, and then terrible all at once.
-
What sort of noise would the water pump make? I don't think the noise could have been made by it.
Would chain slack be gradual? The engine sounded totoally fine one moment, and then terrible all at once.
A water pump either grinds or sounds like a bearing squealing. You said it sounded like quarters so I was thinking it might be the chain tapping up against something.
-
I was thinking the chain too, but everything looks fine and the tensioner is brand new.
-
What sort of fuel are you using in car? If you use less than minimum requirement, the engine will ping (knock). It will sound like marbles rolling or a metallic type knocking under load.
Maybe post a video or audio sound if you can?