Engine noises...problems??

[Steven Papatrefon]

> Should I take the timing down to 15 first and see if
> that helps?  Shouldn't the knock sensor retard it
> anyway?

I would definitely try that first and see if it stops.  How long has this
been happening?  If just recently, then maybe you got a bad load of
gasoline.

Maybe excessive carbon buildup on your pistons?

Also, maybe your knock sensor is not working.  Check your engine codes.

Steve Papatrefon
'92 NX