Did m20 valve adjustment (first time myself). Did everything according manual, 0.25mm gap for cold motor when both cams are facing down, eccentrics torqued to 11Nm with a small torque-wrench.
Started the motor, let it warm up till thermostat opened even more till it reached medium temp on the dash - worked perfectly fine, shut down the motor, drained the engine oil.
There was a problem with oilpan drain bolt (PO fuckery) etc. etc. - motor stood without oil for about a week, then new filter and new oil, gave it a bit of spinning with the starter to build up oil pressure, started the motor - its like running on 3 cylinders or smthg, there is a rhythmic accent in the sound, motor vibrates a lot, putting my palm on the intake i felt a dull rhythmic beat corresponding with the accent in the sound.
Is it possible, that eccentrics were under-torqued and those which where pushed by the camshaft for a week while engine stood oil-less moved by themselves?
As I mentioned, torqued them all using torque-wrench, checked them all at least 10 times to make sure before putting the valve-cover and then motor worked close to half an hour perfectly fine.
When loosening the eccentrics during the adjustment some of them felt A LOT tighter than 11Nm specified in the manual.
Maybe the torque in the manual is smallish and in fact requires a bump?
Started the motor, let it warm up till thermostat opened even more till it reached medium temp on the dash - worked perfectly fine, shut down the motor, drained the engine oil.
There was a problem with oilpan drain bolt (PO fuckery) etc. etc. - motor stood without oil for about a week, then new filter and new oil, gave it a bit of spinning with the starter to build up oil pressure, started the motor - its like running on 3 cylinders or smthg, there is a rhythmic accent in the sound, motor vibrates a lot, putting my palm on the intake i felt a dull rhythmic beat corresponding with the accent in the sound.
Is it possible, that eccentrics were under-torqued and those which where pushed by the camshaft for a week while engine stood oil-less moved by themselves?
As I mentioned, torqued them all using torque-wrench, checked them all at least 10 times to make sure before putting the valve-cover and then motor worked close to half an hour perfectly fine.
When loosening the eccentrics during the adjustment some of them felt A LOT tighter than 11Nm specified in the manual.
Maybe the torque in the manual is smallish and in fact requires a bump?
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