timing on propane engine
i have a 1994 f250 351w c6 on propane only. previous owner had dual fuel then decided to go with straight propane; removed both gas tanks. i don't know what else, if anything was removed.
i need to get this truck through emissions testing and so i am giving it new : cap, rotor, plugs, wires, air filter, and oil change.
my question is : what should the timing be set at for this engine to run on propane ? i am not even sure if it has a spout connector on this year but, if it does, should it be disconnected ?
the truck actually runs fine (except for an up-and-down idle during warm-up only) but it's due for the tune-up anyway.