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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Aug 2009 Posts: 56 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2009 Posts: 56 | Since I've had my 51 truck back on rode I get foaming anitfreeze out of overflow tube on the ground when I stop. The back of my cap is gunky looking also.
What do I need to do? | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Find out where your leaking oil into the coolant. If your seeing a kind of brown frothy looking goo in the coolant then you will probably be seeing the same thing in the oil. I'd look for a leaky head gasket first off.
DG
Denny G
Sandwich, IL
| | | | | Joined: Aug 2009 Posts: 56 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2009 Posts: 56 | | | | | | Joined: Jul 2006 Posts: 104 Jack of all trades and a Master of None! | | Jack of all trades and a Master of None! Joined: Jul 2006 Posts: 104 | You can also have a leaking head gasket into the combustion chamber, are you losing coolant? Pull the the plugs and look for a burnt "white" coloring on it. Coolant in the combustion chambers would yield white smoke from the exhaust, as well as a "sweet" smell due to the antifreeze being burned off. You may also experience loss of power and coolant loss depending on the severity of the head gaskets condition. Another thing you can do is have it checked on a scope, by a mechanic, for really HIGH hydrocarbon emissions. | | |
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