Hi all hoping some one has some experience with LPG I have a couple of problems with my LPG set up and would appreciate some advice.
The engine is a 4.2 rover V8 on twin SUs freshly installed runs okay on petrol al being a bit rich probably because the needles are worn.

LPG is an open loop OMVl R90 vaporiser.

Ignition is megajolt running on a standard petrol map.

I have a old analog air fuel ratio meter that I can use whilst driving to see the state of tune. I have been tuning it to stoich on tick over with the bypass at about 2 turns out and using the diaphragm adjustment then adjusting the in line valve to tune in whilst driving.

2 problems one is starting if it stalls which when offloading happens its a pig to start it spins over for about 30 secs or more before begrudgingly starting this is not good on the side of a dodgy hill The other problem is if I connect the raised air intake the revs go through the roof. If I the tune it with the snorkel on it stalls at junctions.

Any suggestions would be good thanks
Mick

Is there a gas shut-off if the engine stops?

Sounds like you're pumping too much gas, or the petrol supply is still getting into the carbs.

Peter

Is there a gas shut-off if the engine stops?

Sounds like you're pumping too much gas, or the petrol supply is still getting into the carbs.

Peter

Yes there is the safety relay that shuts off the solonoid valves I have been talking on the LPG forums apparently its common when stalling the excess gas makes starting difficult. Starts normally okay
Mick