Hi guys, thanks for the suggestions, still unable to find a vac leak, spraying carb cleaner everywhere but no change in rpm, at least the engine is cleaner now
Gerry I also checked the hoses on the intake as you have shown in your other post and they look fine, cleaned them up and there are no signs of failure. Any experience with the plastic intake manifolds? Do they commonly warp or leak as well?
Picked up some MAF/MAS cleaner and will hit that again to be sure. I capped off the purge (MOT) valve at the canister side port and it smoothed out ever so slightly, but the stumble is still there.
Keep the suggestion coming.