Thumping noise at idle?
When my car was running...it would thump at idle...sounded like a puffs or thumps every half a second or so coming out of the down pipe...whats causing it? Preignition? timing was set at 16 degrees...
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xchikon
Honda Civic / Del Sol (1992 - 2000)
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Mar 2, 2015 03:49 PM




