911virgin Posted 5February, 2023 Report Share Posted 5February, 2023 I've notice if I haven't driven the 993 for a week, on starting the engine there's alot of smoky exhaust for about five seconds Car is driving fine, no issues Whats the cause of this smoky exhaust? Quote Link to comment Share on other sites More sharing options...
LeeM Posted 5February, 2023 Report Share Posted 5February, 2023 Oil sitting in the combustion chamber from the oil tank I imagine, though I'm sure there's a more professional explanation imminent Nearly every air cooled I've seen on a cold start up has some sort of blue smoke, mine included. tomo and Yeatesy 2 Quote Link to comment Share on other sites More sharing options...
tomo Posted 5February, 2023 Report Share Posted 5February, 2023 When these cars sit, oil from the tank slowly seeps back into the engine and tends to pool oil at the bottom of the cylinders. This oil sometimes will seep past the rings and provide a little two-stroke crop dusting vision behind you as you start her up. If the smoke clears after a few seconds of running, I wouldnt worry too much about it.A 911 that doesnt smoke some is merely out of oil from a 993 rennlister. Adrenalin62, Peter M, Dalai and 1 other 2 2 Quote Link to comment Share on other sites More sharing options...
T-Man Posted 5February, 2023 Report Share Posted 5February, 2023 Don't sweat it. Nothing to see here. Not abnormal at all. tomo 1 Quote Link to comment Share on other sites More sharing options...
911virgin Posted 5February, 2023 Author Report Share Posted 5February, 2023 57 minutes ago, tomo said: When these cars sit, oil from the tank slowly seeps back into the engine and tends to pool oil at the bottom of the cylinders. This oil sometimes will seep past the rings and provide a little two-stroke crop dusting vision behind you as you start her up. If the smoke clears after a few seconds of running, I wouldnt worry too much about it.A 911 that doesnt smoke some is merely out of oil from a 993 rennlister. Yes, this is exactly what happens! Thanks everyone for the expert advice and reassurance👍🙂 tomo and LeeM 2 Quote Link to comment Share on other sites More sharing options...
Mike D'Silva Posted 11February, 2023 Report Share Posted 11February, 2023 On 05/02/2023 at 14:07, 911virgin said: I've notice if I haven't driven the 993 for a week, on starting the engine there's alot of smoky exhaust for about five seconds Car is driving fine, no issues Whats the cause of this smoky exhaust? how many km has the motor travelled? Quote Link to comment Share on other sites More sharing options...
911virgin Posted 12February, 2023 Author Report Share Posted 12February, 2023 16 hours ago, Mike D'Silva said: how many km has the motor travelled? 120000 kms Quote Link to comment Share on other sites More sharing options...
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