Strange Idle

[Kevin G]

I started my car up recently after the winter months. Can someone tell me why I couldn't get it to idle until I took off the oil cap. Put the oil cap back on and it oscillates and then dies. Last fall I had the manifold boots and gaskets replaced and after that, at times when started cold, it would hunt for a steady idle. Don't know if the mixture was set incorrect or I need to change the idle. Any idea's appreciated.

Thanks Kevin

[Vipergrün]

I'd say your mixture is too rich and letting the additional air in thru the cap leaned it out enough to run well.

[rstoll]

Stale gas?? Maybe a bottle of Techron and a fillup are in order.

CIS idle hunt problem found

[Kevin G]

Thanks for the replys, I leaned out the mixture and sure purrs like a kitten now. Time to drive around, it's been 4 months in Wisconsin since the weather has been good and 60 degree days in March are hard to come by.

Thanks again!

[rstoll]

Kev, do you have a pop off valve in place?? Lean mixture will make her pop.