car runs totally perfecthas 97000.how do i find this smal leak? and get ur done. need a smog check.only so many parts ,charcoal canister,purge valve,leak detect conrol,
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1997 BMW 328iC Question: evap. emissions sys.detectes a small leak code:p0442
Answer #1csubak30 March 27, 2012, 02:23Master
Best way is to go to a shop and have them do a 'smoke test' this will quickly locate the source of the leak.
Replyglobalhelper, March 27, 2012, 09:03Master
OR POSSIBLY A SOLENOID HANGING OPEN, BUT YES START WITH A SMOKE TEST. ALSO CK GAS CAP FOR A CRACKED O-RING