Quote:
Originally Posted by baalpeteor
Ok here's the scenario...
I brought a 93 altima gxe off a gurl. it has 180k or s omiles on it. When we test drove it , it checked out ok. she thought it had a bad wheel cylinder and alternator/alt belt but those were brand new, along with new tires. The engine was clanky wet sounding.
After getting my personal mechanic to take a look, it seems to have been the timing chain "protector" (that metal over the chain that just i guess covers it from.. i dunno... super secret water for those who dont use a valve cover?) was broken, and was just sitting on top. After removal it was quieter. The noise now is from a bad pulley I believe...
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Sounds like the mechanic removed the cam chain guide/slider that is between the two cam sprokets and the valve cover. I understand is can break off and rattle around in there. I also believe Nissan had a TSB that removed that slider.
The other noise may be a bad bearing on one of the belt tensioner pulleys. If you can remove the belts then you can spin the pulleys to see if they are rough and making noise, or you can even start the engine for a minute without the belts to see if the noise goes away. If the noise goes away, then it's the external belts and/or tensioner pulleys making the noise. If the noise is still there without the belts installed, then it's coming from the internal cam chain mechanisms.