Hello there,
I have been reading this thread and I have the same problem but its worse.
The rangie is a 95 4.6 with lpg it will run for a short while and then stops miss firing and has problems re starting.
Again the same on petrol and lpg - slightly better on lpg.
The question I have is the spark plugs - one of the posts say use normal ngk plugs but no one said anything about not using the more expensive
platinum tip ones.
Also if H-M3 is reading this. what cured the problem ??