Chain cover leak causing smoke?
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Chain cover leak causing smoke?
I saw some smoke the other day after a spirited drive. It reminded me of what I used to see when the valve cover gaskets needed to be replaced last year. My Indy told me then that the chain cover gaskets needed to be replaced as well, but that it was a big job (~10 hrs). At first, I dismissed this as the possible problem because I thought a leak from this area wouldn't fall on anything hot. I searched on here and didn't read anything from anyone who said anything about smoke related to this type of leak. I guess I was wrong
I don't have the coin for this right now (kid at GW). Can anybody point me to some idiot-proof instructions on how to remove what I need to remove to get to the covers? I'm not a mechanic but hope this is something a reasonably handy guy can do. Thanks in advance for help.
I don't have the coin for this right now (kid at GW). Can anybody point me to some idiot-proof instructions on how to remove what I need to remove to get to the covers? I'm not a mechanic but hope this is something a reasonably handy guy can do. Thanks in advance for help.
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From: Gig Harbor, WA still the great NW!
this is a common problem with 993s you can try to snug down the bolts on the two chains covers, replace the rubber sealing grommets under the bolt heads (there are about 3 that can't be reached) and see if that slows the leaking. beyond that replacing the gaskets is a big job.
lower the engine, remove the engine "tin" around the rear of the engine and then replace the gaskets. not a novice DIY and therefore something many owners live with until a clutch change or similar work makes dropping the engine practical.
good luck - hope your leak is manageable...
lower the engine, remove the engine "tin" around the rear of the engine and then replace the gaskets. not a novice DIY and therefore something many owners live with until a clutch change or similar work makes dropping the engine practical.
good luck - hope your leak is manageable...
Pro
Joined: Oct 2009
Posts: 573
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From: England, Beckenham
Hi
It is a right pain to replace the gaskets with the engine in. Before I did mine in order to stop the smoke I got a good size square of tin foil and folded it until I had a rigid "V" shaped section with walls about 1" high, maybe a bit more. I then wedged it under the edge of the timing chain cover so that any oil would be caught in the "V" shaped gully and drip out away from the heat exchanger and onto the engine undertray.
Its a dirty trick I know, but it did work.
Berni
It is a right pain to replace the gaskets with the engine in. Before I did mine in order to stop the smoke I got a good size square of tin foil and folded it until I had a rigid "V" shaped section with walls about 1" high, maybe a bit more. I then wedged it under the edge of the timing chain cover so that any oil would be caught in the "V" shaped gully and drip out away from the heat exchanger and onto the engine undertray.
Its a dirty trick I know, but it did work.
Berni
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Many thanks gents. It is aas I feared. I've made an appointment for my guy to put it on the lift and have a good look around. Berni, that sounds like something I might do in the short term combined with what Stace said. I'll keep you all posted.
