Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Diagnose a Quadrajet carburetor problem => Topic started by: boondocker on June 25, 2013, 01:44:21 PM

Title: Runs rough with air cleaner on
Post by: boondocker on June 25, 2013, 01:44:21 PM

I rebuilt my quadrajet (from a '76 olds for a '72 cutlass rocket 355) 800cfm. I purchased Cliff's setup, ran excellent for some time now runs rough with the air cleaner on (runs as it should without air cleaner), this is a recent air cleaner K&N...it didn't need to be cleaned but I cleaned it. I don't suspect the air cleaner itself because it started running rough after I was fiddling with the carb...don't ask me what I did, as I don't remember. Any insights would be appreciated :)

Title: Re: Runs rough with air cleaner on
Post by: boondocker on June 26, 2013, 03:14:08 PM

Fixed the problem, removed the PCV valve and gave it a shake...appeared to be stuck. Works great now...thanks for all the feedback ;)

Title: Re: Runs rough with air cleaner on
Post by: Cliff Ruggles on June 27, 2013, 04:52:55 AM

PCV valves can be cleaned with brake or carb cleaner, they get gummed up sucking out all those crankcase vapors for many years.....Cliff