Whistling sound coming out of valve cover oil cap.

[02grandprix]

I re did all the vac lines and tees in my recent post i had made, because I had a bad vac leak. So what happens now is when the car is running for more than 5 mins a loud whistling sound is coming from the oil fill cap, I removed the oil cap and the noise went away. I put my hand over the hole and there is a lot of suction. What the heck would cause this? TIA

[QwikGT]

that thrasher tb spacer is blocking the pcv. put a breather on instead of the oil fill cap

[02grandprix]

I did replace the tb gasket yesterday. Is there a way i put it on backwards. Im gonna check tonight.

[Rather B Blown]

that thrasher tb spacer is blocking the pcv. put a breather on instead of the oil fill cap

this...its crankcase pressure put a breather on problem solved it has nothing to do with your tb gasket

[Bio248]

take the throttle body spacer off and tap your throttle body or blower case instead. this will solve your problem without creating another one with a breather.

[02grandprix]

Haha it was the TB gasket. I put it in backwards on the other side of the spacer facing the SC inlet for some reason. Turned it around problem gone. I hope i didnt ruin anything with this stupid misshap. Sorry to post it twice. Thanks again for the fast replies.

[01gpgt01]

you didnt do any damage. Glad you got it fixed

[02grandprix]

Ha ok. Thanks man.