[David Chan]

Jbennett,
Sorry, I was not able to solve this problem. It is very difficult to pinpoint. In addition to my previous efforts, I also tried adding more grease to the tensioner bearing and that did not help at all. I even tried using the idler pulley as a tensioner pulley and it didn’t affect the noise a bit.

I’m thinking the noise could be coming from somewhere else. Not sure where.

One thing I noticed while taking out the front cam gear for cam seal replacement is that the gear is rubbing against the sensors a bit. So I tried grinding down the gear a tad. That didn’t do much. Perhaps, I need to grind it down a bit more. However, I already put everything back together.

Definitely need help here. Perhaps Eric can weigh in.

[David Chan]

I took off the timing belt cover and ran the engine. The noise is still there. I replaced the tensioner pulley, tensioner, water pump, timing belt, idler pulley, and the noise is still there. Not sure what it is. I used the stethoscope and it seems that the noise is coming from the tensioner pulley but I have replaced that part three times already.

[David Chan]

This is the most difficult noise problem to identify and solve. Any suggestion is appreciated. 

[David Chan]

I tried a different brand (GMB) for the tensioner pulley and it reduces the noise a bit. However it still exists.

[David Chan]

The noise is not coming from the drive belt area since I took the belts off and ran the engine; noise was still there. It is coming from inside the timing belt cover. As mentioned earlier, I already replaced most of the parts related to the timing belt. I’m still hearing noise from the tensioner pulley via a stethoscope, but I have replaced that pulley twice already. Can’t figure it out.

[Author]

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