MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: jimmy-s3 on December 18, 2012, 05:49:51 pm

Title: PCV airflow
Post by: jimmy-s3 on December 18, 2012, 05:49:51 pm

Should air be getting sucked in from the small hole at the top of the PCV when the car is running?
If not, does this indicate a failed PCV?

Title: Re: PCV airflow
Post by: 56OctyVRS on December 18, 2012, 07:49:45 pm

The pcv is sealed unit and only recirculates intake and boost pressure from internally. It shouldnt suck or vent air to the atmosphere. Have you replaced it recently?

Title: Re: PCV airflow
Post by: jimmy-s3 on December 18, 2012, 08:09:34 pm

Its never been replaced.
The car is an Ed30 with 47k. Im tyring to find out where a high pitched air squeal is coming from and when looking found the dome on the PCV to be drawing air in quite bad...Im not sure why the dome has a moulded outlet on it?
Ive plugged the hole up for now but the car is still making the high pitced air noise, but i cant locate where its coming from?
When i switch the car off the noise appears for about 2-3 seconds as if its releasing air pressure from somewhere?