I Need help Checking for pcv failure

Matty92

Active Member
Mar 18, 2018
9
2
Hi, I have a leon mk2 2008 2.0 tfsi 197bhp DSG.
I have been having poor starting and rough idling and fuel consumption is getting worse. I've heard pcv can be a cause and apparently you can check by taking off your oil cap off, I done that and the car cuts out in seconds is that an indication that its failing or is it working fine?
Thanks
 
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Matty92

Active Member
Mar 18, 2018
9
2
Pretty good indication something is wrong.

Would start by changing the PCV and diverter valve (if not already done).
I haven't changed them, but will definitely try them thanks,
should the engine be running still when the cap has been taken off and has a bit suction on the oil cap too not strong suction but has a bit of a pull on it
 
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