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Old 02-15-2021, 07:50 PM
ahlem ahlem is offline
Join Date: Jan 2016
Location: Michigan
Posts: 244
ahlem is on a distinguished road
I would check the vacuum lines and rubber intake plumbing and be sure the rubber intake parts are properly installed with good hose clamps. I had a similar situation due to not seating the intake elbow and another time as a crack was developing. Porous crusty vacuum lines and old hard plastic hoses are common.
2001 x5 3.0, 1990 e30 M3, 1991 318is, 2002 325i, 2008 335i Dinan stage 3 6 speed,
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