N42 Valvetronic Vibrations.....

Re: N42 Valvetronic Vibrations.....

Guys!!

Vibrations is still there. Been PMing bro Yendor....he's been of GREAT help to me...thanks Yendor....

Latest Update: Done a dry compression test where the piston is pushed up and the plugs removed where compressed air is pumped into the cylinder to see if there's a drop in air pressure.....all 4 cylinders recorded normal pressurization.

Anything else I should be looking at???

Bro Yendor,
The clogged injector, weak ignition coil, fouled plug or dirty valve seats u mentioned...the ignition coil sparks recorded voltage and sparking within specification.....the plugs were swapped around but the problem persisted in cylinder 4.

What tests are run to detect the other 2 items (clogged injector, dirty valve seats)? But I changed my fuel regulator and oil separator in the manifold.

Can anybody tell me what is Rough Running Cylinder Cycling????
 
Re: N42 Valvetronic Vibrations.....

My car was vibrating quite badly at "D" as well - brought it to J4C; they changed the engine mount and the "tensioner" (i have no idea what that is) - no more vibration :)
 
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