Quote:
Originally Posted by zim-zim
BTW the article I posted seems to suggest that there’s 60% guarantee that a rod bearing will spin by 100k (kilometers), if the valve is not replaced or disconnected (!). Like with time, the valve wears and its reaction time worsens (no proof just an opinion). I own a 2012 x3 3.5 and a 2013 335i. Both have same looking valves with black casing. The x3 recently hit 95k. I replaced the valve on it for peace of mind.
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Even before i decided to say anything about this valve and we have discussed this possibility before in this forum many times before, i struggle to understand how a 'Normally Open' valve that is in default poaitiin pressed open by a spring can fail. It my be possible that it gets stuck when it has already been actuated. Hard to say.
I guess it would be beneficial to remove and bench test this valve on motors that have seized.
You might not even have to apply and signal since if the theory is correct when you pull them they should be stuck engaged.