Compression gas test in coolant
Thread Starter
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Senior User
Joined: Dec 2007
Posts: 145
Likes: 1
From: Princeton NJ
Let me clarify what I am looking to do. I should have said combustion gas appearing in the coolant.
There has been white coolant residue on the outside of the radiator cap. I changed the cap but still have seen the residue on the new cap. This caused me to want to test the coolant for Combustion Gases as a test for a blown head gasket. The residue indicates thecap has opend beyound the 16 lbs setting.
My original question was where was a good point to tap into the vacuum line to supply vacuum to the tester.
Dip stick appear fine. I am using Valvoline Synthetic.
There has been white coolant residue on the outside of the radiator cap. I changed the cap but still have seen the residue on the new cap. This caused me to want to test the coolant for Combustion Gases as a test for a blown head gasket. The residue indicates thecap has opend beyound the 16 lbs setting.
My original question was where was a good point to tap into the vacuum line to supply vacuum to the tester.
Dip stick appear fine. I am using Valvoline Synthetic.
Laughing Gas
Joined: Jul 2010
Posts: 1,174
Likes: 2
From: Flat Rock, MI
Let me clarify what I am looking to do. I should have said combustion gas appearing in the coolant.
There has been white coolant residue on the outside of the radiator cap. I changed the cap but still have seen the residue on the new cap. This caused me to want to test the coolant for Combustion Gases as a test for a blown head gasket. The residue indicates thecap has opend beyound the 16 lbs setting.
My original question was where was a good point to tap into the vacuum line to supply vacuum to the tester.
Dip stick appear fine. I am using Valvoline Synthetic.
There has been white coolant residue on the outside of the radiator cap. I changed the cap but still have seen the residue on the new cap. This caused me to want to test the coolant for Combustion Gases as a test for a blown head gasket. The residue indicates thecap has opend beyound the 16 lbs setting.
My original question was where was a good point to tap into the vacuum line to supply vacuum to the tester.
Dip stick appear fine. I am using Valvoline Synthetic.
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Thread Starter
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Senior User
Joined: Dec 2007
Posts: 145
Likes: 1
From: Princeton NJ
I have a test tube and the fluid for the test but my question was a good place to attach a vacuum line to power the test. It looks like I will just use a hand held vacuum pump as the Ford vacuum lines are not easily detached.
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Laughing Gas
Joined: Jul 2010
Posts: 1,174
Likes: 2
From: Flat Rock, MI
Are you trying to pull a vacuum on the cooling system? If I knew where you wanted to tap into the system I'm sure we could find a convenient port. If it is the cooling system, take you old cap and put a fitting in the top of it and use that.
Thread Starter
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Senior User
Joined: Dec 2007
Posts: 145
Likes: 1
From: Princeton NJ
The compression gas test kit I want to use require vacuum to pull the gases entrapped in the coolant trough the column if test liquid.
I have a break bleed vacuum pump that will do the job. I was originally looking for a place to tap into the engine vacuum system but problem solved.
I have a break bleed vacuum pump that will do the job. I was originally looking for a place to tap into the engine vacuum system but problem solved.
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Joined: May 2004
Posts: 29,380
Likes: 118
From: Central Coast of CA
I ask because people over the years have reported a poor seal when replacing the degas rez or the degas cap with aftermarket brands.
Stewart
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