Intake manifold leaks cause all manner of running problems—"hanging" idle, hard- or no-start conditions, difficult tuning, and in extr...
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Intake manifold leaks cause all manner of running problems—"hanging" idle, hard- or no-start conditions, difficult tuning, and in extreme scenarios, burnt valves and pistons, and the Harley-Davidson port design left a lot to be desired. The definitive test for intake manifold leaks is by placing the manifold under pressure or vacuum. There are a number of ways to accomplish this, but this tester is probably the most painless. Simply remove your carburetor and install this test tool with the appropriate gasket. (Gasket is not included.) Apply constant, regulated air pressure of 10-15 PSI from an open air chuck, and spray the manifold with leak detection fluid or plain ol' soapy water. If you've got leaks, you'll see 'em. The bubbles don't lie! -Can be used on all stock 1940-1965 Harley-Davidson E and F models (74" Knucks and all Panheads) Also appropriate for any motorcycle utilizing a 4-bolt Linkert carburetor.
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