Another knocking thread

[funkbuster]

Hello everyone. I just recently got my 93 tsi running. When it is at idle after cranking it, I hear a knock comming from the belt area. If I take it out and drive it a few minutes, when I stop and go to idle, the sound is gone. Any ideas on it? thanks in advance.

 

[KuZo]

It could be anything from your waterpump, to your oil pump, to the bearings on your tensioner pullies. My experience is a bad bearing in one of the tensioner pullies and it made a growling/vibrating sound when it was cold. But once it warmed up it was fine. When is the last time your timing belt was changed?

 

[funkbuster]

forgot to mention that. I put all new timing belt and components on when I was doing the head, they all have less than 500 miles on them. Also, new water pump. I get good oil pressure, and my screen on my oil pump is good. Is there a chance that one of the timing belt pulleys being loose would cause this? Mabey it is the crank shaft pulley?

 

[Rex2342]

It could be something rubbing or hitting the timing belt cover. I had a chunk taken out of my PS belt that was hitting and making a knocking sound but would stop after a while. Do you have a logger and if so is it picking up the knock?

 

[KuZo]

It'd be a good idea to go through there and make sure everything is tight and torqued properly, just for peace of mind.

 

[andymoraitis]

Pull the driver's side splash guards and check for a broken or separated crank pulley.

 

[funkbuster]

I will check the crank pulley tomorrow. I have to be at work in a few minutes. I know that my lower timing cover has a bad spot near the bottom. I am thinking that a bad spot on the back of my crank pulley is catching the timing cover, but I dont know why it would stop after driving it a little. I dont have a logger.