Thread: Heat riser valve ?
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Old 02-19-2015, 04:44 PM   #6
seattle gmc
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Location: Seattle, WA
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Re: Heat riser valve ?
I just replaced mine. The only time it seems to open up is when i push lever down. Maybe it is moving when the throttle is aplied, i don't know?
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1970 GMC K2500 aka MaTeR

2007 Chevy Silverado 1500HD Classic
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