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Old 10-13-2012, 09:01 AM
timothale timothale is offline
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air leak,

Is the Modulator good, sounds like the diaphram is leaking and too much air getting into the intake. A hand pump vacuum tester is handy to have , I have seen guys suck on the tube to see if it holds vacuum, not aa me, if the modulator hose is long enough, run the engine, pinch the hose so it won't leak, pull of the hose put your finger on the end . unkink the hose and you should feel some vacuum in the hose. ,a lot of times a leaking modulator will allow oil to get into the hose..
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