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Old 01-23-2018, 07:48 PM   #2
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Join Date: Jun 2017
Location: Walla Walla, WA
Posts: 475
Default Re: Help with radiator cap spray

Originally Posted by Lee Mitch View Post
I have had a reoccurring problem of spray coming under the radiator cap and decorating my hood. It occurs on longer pulls (up a hill) regardless of environmental ambient temperature. It does not occur with increased rpm. I have a moto-meter that works (tested it), and it indicates that my engine is not overheating.

The timing is dead on. I increase fuel and slightly retard spark when pulling a hill.

What gives? Where would you start? What would be other symptoms of a head gasket problem? Anyone think that could be it?

Make sure the radiator isn't brim full. Just fill to where the water or coolant is just covering the tubes by maybe 1/4 inch or so.

Same thing happens to me if I over fill it.
-Bill G
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