1998 Chevrolet S10 Base 6 Cyl 4.3L
175000 miles 1998 s 15 With 4.3 6cyl Truck surges high and low engine speed still runs but rough four wheel drive works
The truck was running fine yesterday and then started running rough
Read fault codes with a code reader and repost. Check fuel pressure with engine running with a fuel pressure gauge. Should have 60+ minimum pressure.