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Not a VANOS expert, but I did have a colleague with an E36 that forgot to install the drive helix on the VANOS and when the engine was started it would bend the exhaust valves in #1, #2, & #3 cylinders only. That took a bit of study to find the culprit!!! I am sorry to say it took two sets of exhaust valves for him to find the problem....:-(
I know that VANOS seals can cause cold idle roughness.....
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 Did you just pass me at 200kmh in a 300SD???"
Last edited by Doktor Bert; 11-13-2012 at 04:38 PM.
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