Date: Tue, 20 Oct 1998 09:06:47 -0400
From: "Skip" <skipopnopsamrash*>
Subject: Re: coolant leak

Justin VanAbrahams wrote in message <362BD69E.2950nopsamnet>... >Scott Nelsen wrote: >> >> this is a weird one... For about the past week, I have been losing the >> contents of the coolant reservoir (maybe 2 cups) each day. However, I >> can't seem to find where it is going. There is no evidence of any leak >> that I can find. I thought that perhaps since I may have a headgasket >> that is going bad that it may be leaking into and getting burned in the >> combustion process. However, wouldn't that show up in white smoke >> coming out of the tail pipe? >> >> Any suggestions will be great appreciated. >> >> Scott >> '91 900S Conv. > > >My '88 900T blew a head gasket at about 130,000 miles. >It would go through an entire "tank" of coolant in a >5 minute drive, with no obvious signs of it at the tail >pipe. It was very weird. > >After replacing the head gasket, the coolant stopped >disappearing for about a month. On a drive down to >Central California, it started losing coolant again. >My first thought was that I'd done something wrong >installing the head gasket, but VERY close examination >revealed that the main lower radiator hose had a pinhole >leak in it. The leak was where the hose cross over >the block, but is obscured by the intake manifold. >The leak was so small that the little water that escaped >would be vaporized immediately at it hit the block, >and no observable amount of steam or smoke would result. >The other notable thing is that it wouldn't leak >when left standing - the engine had to be running >in order for the leak to develop. > >Very weird... > >-Justin Also had similar problem on my 88 900t. Except for me it was one of the hoses to the heater core. It had slowly been rubbed over the years by the A/C belt as it (the hose) moves a bit when it heats/cools and would barely touch now and then. Tiny leak, only when hot and no noticeable steam/water etc. Check all your hoses very carefully when the car is hot, I find a VERY bright flashlight really helps. Good luck.

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