Quote:
Originally Posted by Karolx80
Hi there! Also having same issue at the moment. When my valvetronic is turned on, having high pressure in intake manifold(~950hPa). Engine runs rough and misfires especially on cold starts. When valvetronic is turned off engine runs fine and intake manifold pressure is about 300hPa and a fault code 101F01 is gone. Also have smoke tested, no leaks were found. Checked all sensors and all works good. Checked the valvetronic servomotor also works fine. Also replaced valve cover but everything is the same. Cant understand why intake manifold has high pressure when valvetronic works. Any thought?
P.S did you solved your problem?
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Unfortunately not, rather busy the past few months and have left the issue on the backburner. I have however noticed scoring on my cam journals which could potentially attribute to the issue. Sourcing a donor engine as we speak.