924Board.org

[doomer77]

What does it mean when there comes a ringing sound from the camshaft cover, not ticking at all but ringing.

also when checking oil level, should you put the whole dipstick in or just until it touches the rubber?

cheers,
erik
_________________
Why drink and drive when you can smoke and fly?
Carpe diem. and if that doesnt work; get drunk!

1980 924 n/a - engine swap begun
1989 Volvo 480ES

[gohim]

The ringing sound is probably the result of one of the pulleys bouncing off the timing cover.

Make sure that the timing cover has all of the rubber isolation bushings and the metal spacers that fit inside of them. Otherwise it is very easy to install the timing cover off-center where the pulleys or the alternator pulley can make comtact.

The alternator bushings may also be worn out, which allows the alternator to twist out of line and make contact with the timing cover.

The early timing covers also crack from vibration, especially if you don't have the rubber bushings and metal spacers. New replacement timing covers are reinforced, and not that expensive.

The same rubber bushings on the timing cover are used in other places under the hood (could be on the bottom mount of the later model windshield washer bottle, and the radiator isolation mounts).

The rubber alternator bushings were superceeded over fifteen years ago by plastic/poly bushings in the Porsche Dealer Supply line. If you get replacements from a aftermarket source, make sure that you are going to get the plastic/poly parts, and not the rubber parts. The rubber ones only last a year or two before that start to crush, and the plastic/poly parts last almost forever.

[doomer77]

once again gohim has the answers

so its an external thing that is making the sound, i was very afraid it was something inside the engine..

thanks
_________________
Why drink and drive when you can smoke and fly?
Carpe diem. and if that doesnt work; get drunk!

1980 924 n/a - engine swap begun
1989 Volvo 480ES

[emoore924]

***carefully***

take a long screwdriver and hold the pointy end against the cam cover and put your ear against the butt of the handle. You'll hear all kinds of amazing things but hopefully, by moving the tip around, you'll find the place where the noise is coming from.

NOTE: do NOT place the pointy end against any moving parts or you'll find out just how fast and far a 924 can fling a screwdriver through the wall to your right. Not to mention the fact that when you do that, it will sound really LOUD in your ear.