what next on 2000 BMW 740i

car came in with multiple misfire and misfire #4. Replace pcv plate and intake gasket. also had code 33 vanos problem. Replaced vanos and cam sensor, after second drive cycle light comes back with code 33

by in Mooresville, NC on August 13, 2010
1 answer
ANSWER by on August 13, 2010
Sounds like the Vanos may not have been adjusted properly. This takes special tools, that are very expensive and have to be set at critical dimensions i.e. 3.4 mm, not 3.3 or 3.5 etc. I just worked with a Vanos problem this week and the actual problem was that the Vanos cam gear adjustment had slipped, and was setting the 33 Vanos code. So be sure that the shop knows about all of these intricate details, or the Vanos problem will not go away and you will have a lack of power and poor fuel economy,which were the symptoms for the car that was repaired in my shop.
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