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I have a coolant leak but can't find it...
#1

Put a pressure tester on the system, pump to 21psi, holds pressure fine. Look around and can't find a leak or even a wet spot anyware, everything seems fine.



Go out for a drive and drive her hard for 30 minutes, come back in and the coolant level is down about 2 inches.



Fill it up, test it again, no leaks. Go back out for a drive, come back, down almost 2 inches again.



I'm about to make this thing into a go-kart! <img src="/forum/images/smilies/968/blink.gif" class="smilie" alt="" /> <img src="/forum/images/smilies/968/ohmy.gif" class="smilie" alt="" /> <img src="/forum/images/smilies/968/sad.gif" class="smilie" alt="" />



Anyone have any suggestions on where on earth the coolant could be leaking...but how can it be leaking when the pressure tester doesn't budge???????
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Michael Sorbera

aka San Antonio Silver Bullet

2002 VW Beetle TDI

2004 Nissan Titan Crew Cab

2004 Cherokee 33ft Travel Trailer

1990 Mercury Grand Marquis

1993 Amazon Green 968 Coupe (sold)

2002 Speed-Yellow Boxster (sold)

1987 Slate Grey 944 Turbo (sold)

1987 Guards Red 944 (first Porsche - sold)
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#2

If there are no obvious drips on the ground and your interior carpet is also dry, then it must be going past the head gasket. <img src="/forum/images/smilies/968/sad.gif" class="smilie" alt="" />
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#3

bummer - i thought it was fixed



drive it - pull your plugs immediately (do not let cool) and inspect
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#4

Quick check is the dipstick, if it looks milk chocolate brown you have big problems. Don't run it, the coolant is getting into your crankcase polluting the oil. If it's only going into the combustion chamber you're better off but not by much, probably a head gasket and hopefully not a cyl. head fault.
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Brian Wilson, Amazon Green Coupe, middle-aged guy from Boston

Home of the World Champion Red Sox and soon to be four time Superbowl Champion New England Patriots. GO PATS!
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#5

see new thread...
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Michael Sorbera

aka San Antonio Silver Bullet

2002 VW Beetle TDI

2004 Nissan Titan Crew Cab

2004 Cherokee 33ft Travel Trailer

1990 Mercury Grand Marquis

1993 Amazon Green 968 Coupe (sold)

2002 Speed-Yellow Boxster (sold)

1987 Slate Grey 944 Turbo (sold)

1987 Guards Red 944 (first Porsche - sold)
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