distributorguy Posted September 19, 2017 Report Share Posted September 19, 2017 Napa sells a tool called a Block Tester. It checks for exhaust gasses in the coolant by turning a yellow fluid dark blue very quickly. Does your exhaust smell sweet like cotton candy? Or is it simply spraying a little moisture (rich fuel mixture) when you put your hand over the tailpipe??? You could just be blowing a cloud of fuel through the motor. Quote Link to comment
datzenmike Posted September 19, 2017 Report Share Posted September 19, 2017 Or oil. I've seen holed pistons send dense clouds of white. Quote Link to comment
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