If the car runs better with that vacuum line pinched, pull one end off and seal it with a screw. I don't think failure to recover exhaust gasses will cause an engine to run weak, but a vacuum leak will.
grandbonnevillecreature said:...I'll be putting it on cardomain.com. ...
GBodyForum is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.