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924S Oil in coolant AFTER head gasket and oil cooler seal change
I just had the head gasket and oil cooler seals replaced on my 1987 924S, and 600 miles later I find oil in the coolant reservoir, as well as the green gunk on the bead in the middle of the dipstick. It looks just like it did when the head gasket blew, except this time it hasn't overheated and it's been driving fine with no apparent problems.
The first time, I'd just had the timing belt and water pump done, and a radiator hose came off during a long drive and it overheated pretty bad. Still, the oil and coolant didn't start mixing until I'd driven another 500 miles AFTER that. What should I be watching for when we open it up again?
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Currently have: Guards Red 1987 924S 16v -- Light Blue Metallic 1980 928 Gone: Minerva Blue 1979 928 -- Gray 1985.5 944 -- Black 1989 944 -- Black 1984 944 -- Black 1987 944S -- Alaska Blue 1974 914 1.8 -- Guards Red 1983 944 -- Guards Red 1987 924S -- White 1988 924S -- Maraschino Red 1987 944 Turbo -- Beige 1981 924 -- Red 1984 944 |
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11-04-2011, 03:56 PM
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Join Date: Dec 2009
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did you have oil cooler pressure tested when the job was done? 98% are ok but sometimes there is that one oil cooler that is bad. or oil is still in the system i use dawn dishwashing detergent to flush out the system sometimes twice. i have a good used cooler if you need one. regards tom
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11-04-2011, 04:57 PM
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Quote:
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11-04-2011, 05:17 PM
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I don't think they tested the oil cooler, because when I called them back that's the thing he mentioned he would check.
Oil still in the system is what I was thinking. They flushed it out twice with dishwashing detergent, though. Would that be enough or could there still have been some oil stuck in there? And yes, I'm taking it to a shop. Don't have the space or the tools to work on it myself.
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Currently have: Guards Red 1987 924S 16v -- Light Blue Metallic 1980 928 Gone: Minerva Blue 1979 928 -- Gray 1985.5 944 -- Black 1989 944 -- Black 1984 944 -- Black 1987 944S -- Alaska Blue 1974 914 1.8 -- Guards Red 1983 944 -- Guards Red 1987 924S -- White 1988 924S -- Maraschino Red 1987 944 Turbo -- Beige 1981 924 -- Red 1984 944 Last edited by PorscheNut924; 11-05-2011 at 12:12 AM.. |
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11-04-2011, 05:38 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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The usual reason is that the shop did not pre lube the 2 big green "O" rings on the oil cooler and the seals "rolled" causing the leak.
John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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11-05-2011, 04:18 AM
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All Spooled Up
Join Date: May 2009
Location: Between NE and Central PA
Posts: 2,516
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Could the head be warped due to the really bad overheat?
Wait, let me rephrase the question: With the assumption that it did warp, did you get it shaved before you reinstalled it? Otherwise, it must be the cooler or it's O-ring seals, if that was also removed and re-installed when you did the HG, as there are numerous things that CAN go wrong with that particular job, from what I understand. |
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11-05-2011, 05:53 AM
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They said they machined the head. I'll give them this info, thanks.
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Currently have: Guards Red 1987 924S 16v -- Light Blue Metallic 1980 928 Gone: Minerva Blue 1979 928 -- Gray 1985.5 944 -- Black 1989 944 -- Black 1984 944 -- Black 1987 944S -- Alaska Blue 1974 914 1.8 -- Guards Red 1983 944 -- Guards Red 1987 924S -- White 1988 924S -- Maraschino Red 1987 944 Turbo -- Beige 1981 924 -- Red 1984 944 |
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11-05-2011, 11:53 AM
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1987 Porsche 924S 16V
1980 Porsche 928
1986 Porsche 944
1952 Caterpillar D2
GamaGoat
2000 Chevrolet Corvette
