1994 Isuzu Trooper 6 cyl Four Wheel Drive Manual 334, 00 miles
2 weeks ago my trusty trooper stalled as I went out the driveway, then again around the corner, it did not want to idle. It was 24 degrees and I figured I had moisture frozen somewhere. Put " Heet" in the tank it ran for 2 more days and then did it again. It won't idle and when it's revved the RPM's don't go up. When it warms up it runs better. Found a small hose going into the carb(?) Was disconnected and replaced it but it still has an audible " hiss". Or sucking sound. Don't know where to look.