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Old 01-12-2015, 10:22 AM   #1
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Troubleshooting coolant leak

So I did some work on my Boxster this weekend and noticed some coolant traces on the bottom of the 3.4L engine. The leak is very slow and I haven't noticed any coolant on my garage floor yet.

Tracing the coolant up to it's highest point I found some on a flat spot just above the oil pump. It's possible the leak is coming from the "water housing cover" (99610621701) which I installed with a new gasket during the conversion process. It's hard to tell exactly because there is no coolant traces leading directly to the cover. Are there any other possible sources for this leak around this part of the engine?



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Old 01-13-2015, 05:41 PM   #2
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I'll be watching this thread closely as my 3.4 has a leak somewhere and I've yet to find it...mind you I haven't had the chance to look too hard as I only owned the car for 2 weeks before I had to store it for the winter!

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Old 01-13-2015, 05:53 PM   #3
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Is that a crack? In any event, i would pressurise the cooling system and see where the leak is.
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Old 09-08-2015, 11:24 AM   #4
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I found the cause of this leak and it was just the primary oil pump gasket. Need these two parts to replace:
996-107-337-50-M30 - Gasket - Primary Oil Pump Housing to Engine
996-107-261-50-M17 - Gasket for Primary Oil Pump Housing Cover
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