1991 L27 stalls when oil cap removed
Is this normal?
After searching these forums I think its not, but I am stumped.
The car is a 1991 buick regal with 120k. Recently, i tried starting the car when i forgot to put the oil filler cap back on and found out about this issue. The car runs very well, no stalling, idle problems or start up issues when cap is on. It has plenty of power.
The pcv is correctly positioned with an oring and gasket for this model year without an EGR.
There does not seem to be any vacuum leaks.
I replaced the LIM 10k miles ago ( last year) more of a preventive measure since it started to get some oil in the resevoir.
The thread "92 oldsmobile 88 stalling when cold fine when warmed up" dated back in 2006 was useful, but I am still stumped why it does this.
Any help would be appreciated.