At 08:28 PM 3/6/2001, Larry Alofs wrote: >I'm having some trouble accepting the idea that in the part of the exhaust >system that is presumably under some pressure, a leak would cause air to >come in. > Could someone explain this? The exhaust comes in pulses as each exhaust valve opens -- the moving gas has inertia and creates a little vacuum in the pipe after the exhaust valve closes. The system can also form an acoustical oscillator, which will make the effect even more pronounced. david
David Beierl - Providence, RI http://pws.prserv.net/synergy/Vanagon/ '84 Westy "Dutiful Passage" '85 GL "Poor Relation" |
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