removing valve cover on KA24DE

[Bud]

Okay, I searched and read a bunch of topics on the infamous upper timing chain guide, which I suspect may be the source of a new noise....main question: is there a specific gasket I will have to replace if I take the cover off? Seems like there is but then why does courtesy parts only sell a tube of silicone with their timing kits?edit:Okay, did some more searching and the gasket shoud remain intact on the cover....right? - it didedit2: pulled it off to find that the guide had been removed by the previous owner - DOH! Must be one of the pullies? It's kind of a rattle that (at least under load) increases with the rpms...got a belt that squeals after the car's really warmed up, again when the revs get up. ??????

[574-240sx]

Sound like you might have a bad tensioner and its builing up too much slack in the timing chain and rattling against your valve cover. I have a bad tensioner too and I replaced everything 5000 miles ago to have it happen again a few months ago. Nick

[Bud]

Would slack in the timing chain be apparent when the motor is off? I had a look at it and then cranked the car a few times while my pops looked at the rest of the chain and it looked good, very tight.

[574-240sx]

You might not be able to tell when the motor is off. Check the tensioner on the passenger side. I don't know your current stuation or the sound. Nick