I have a 91 V8 classic on petrol and LPG. It has a bad misfire. Changed plugs, leads, amp, rotor arm, and finally the distributor and checked for leaks. Took it for a ride today and going up a slight hill, it backfired really loud and died. Got out and saw the AFM had been blown off. Put it back on and carried on, it backfired again and blew it off again. Finally managed to get home and changed the disi back to original. Then I checked the head bolts on the left hand side and found one slightly loose. Tightened it back up and started the car. Still runs very lumpy. Has anyone got any ideas please?
.
.
Last edited: