disappearing coolant???? FIXED!!! Finally
04-02-2011, 01:22 AM
#1
Race Director
Thread Starter
disappearing coolant???? FIXED!!! Finally
Last ??? from todays track adventure.... I noticed a couple track days ago that the Estate now is loosing coolant....there is NO water in the oil....but it can loose nearly a gallon inbetween run sessions....no water on the ground either....
I thought it could be local boil overs so I installed a new radiator cap...which seemed to be working...but after the 2nd session today it started "disappearing" again.....
My thought is a dying headgasket.....which SUCKS..... has anyone else had this problem.....if so how did you fix it....
I really don't want to pull the engine to rebuild it....but that also would fix the oil leaks too.....
I thought it could be local boil overs so I installed a new radiator cap...which seemed to be working...but after the 2nd session today it started "disappearing" again.....
My thought is a dying headgasket.....which SUCKS..... has anyone else had this problem.....if so how did you fix it....
I really don't want to pull the engine to rebuild it....but that also would fix the oil leaks too.....
Last edited by IcemanG17; 07-23-2011 at 10:35 PM. Reason: update
04-02-2011, 08:05 AM
#3
Team Owner
pull the plugs out and inspect them with a magnifying glass,
look for rusted tips or otherwise very clean insulators inside the plug threads, if you find that then it time for a HG
look for rusted tips or otherwise very clean insulators inside the plug threads, if you find that then it time for a HG
04-02-2011, 09:25 AM
#4
Captain Obvious
Super User
Super User
As a temprary measure you can run a block sealer through it. That stuff is great but you have to follow the instructions or else it won't work. I had a buddy that told me he used it on his short oval race car (SBC) that had a crack on the side of the block and it lasted for the enitre racing season. I've used it on my own beater once too and it worked like a charm.
04-02-2011, 10:54 AM
#5
Not the sharpest tool in the shed
Rennlist Member
Rennlist Member
As a temprary measure you can run a block sealer through it. That stuff is great but you have to follow the instructions or else it won't work. I had a buddy that told me he used it on his short oval race car (SBC) that had a crack on the side of the block and it lasted for the enitre racing season. I've used it on my own beater once too and it worked like a charm.
Prove it is definitely leaking from the HG or cracked head, or .... first.
04-02-2011, 06:59 PM
#6
Race Director
Thread Starter
Next time I'm at the track I will pull the plugs and check them..... Trying bars leak isn't a bad idea...even if it doesn't work....I still gotta change the head gasket...
04-02-2011, 07:43 PM
#7
Rennlist
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__________________
greg brown
714 879 9072
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Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
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475hp/460lb.ft
06-24-2011, 12:05 PM
#11
What happened here Brian? Did you try the leak stopper?
06-24-2011, 12:45 PM
#12
Drifting
Autozone loans out a coolant 'sniffer' that detects exhaust gas in the coolant.
I tried it on my truck, not sure how without a radiator cap you would do it on a 928.
Following is a video I made of the process.
http://www.youtube.com/watch?v=WHKRVklTR94
The rubber stopper is plugged into the rdiator and I'm sucking air through using a hand vacuum pump.
The blue liquid turns yellow if exhaust gas is present.
I tried it on my truck, not sure how without a radiator cap you would do it on a 928.
Following is a video I made of the process.
http://www.youtube.com/watch?v=WHKRVklTR94
The rubber stopper is plugged into the rdiator and I'm sucking air through using a hand vacuum pump.
The blue liquid turns yellow if exhaust gas is present.
06-24-2011, 12:59 PM
#13
Rennlist Member
Have you inspected the Head to Block joint (where visible) I found my HG leak by just inspecting from under the car. It never leaked into the Cyls, just seeped down the outside of the block and dried up before hitting the floor.
