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Originally Posted by deansbimmer
There is no way to check oil pressure at the solenoids. The oil galleries that supply the vanos system is directly off of the main gallery which are all relatively large bores and not prone to being clogged unless whoever rebuilt the engine used silicone sealant in the engine which has broken off and clogged things up.
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Thanks dean. Considering that, is there absolutely anything else that can cause a common global issue that affects all 4 cams simultaneously? The issues we discussed earlier in the thread were really more individual issues, but if there is one global issue that can cause the issues I’m seeing, I’d want to take a look at that. I saw you say this to another guy last year:
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It appears the VANOS isn't able to hold its positions. In the oil filter housing, is the cage present within the filter core? The cage should remain attached to the housing cap when removed.
There are X-Rings on each camshaft. There is also an O-ring on each VANOS adjuster where it slides over the cam. Were those inspected and/or replaced?
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Unfortunately that guy didn’t post back his ultimate resolution if he ever got it resolved. He was having a very similar issue to me with codes on all 4 cams. He changed everything though (adjusters and solenoids), and checked timing, and it didn’t help!
Thanks!
Z.