LPG Discussion Forum

Sounds like low gas pressure-maybe tank valve or vapouriser

The only way LPG can knacker your gearbox is if its not set up properly and jerks

Try putting NGK plugs in and gap them, I found they were best, issues can also be down to valve wear-my rover used to run badly when cold on petrol & LPG but was ok when warm

Has it been run low on petrol? maybe a knackered petrol pump-this caused all sorts of bother on mine

Fit flashlube anyway, you can set the flow rate to virtually use nothing if you want-but its there and better than nothing

Sounds like a good install-early days yet-time will tell if it remains trouble free, they must have pride in their work if its neat-a good sign

only other thing I can think of is that the injector wiring is wrong somewhere where the injector cuts are-may even be a faulty petrol ECU

sounds like you have probably diagnosed it-can the injector be stripped down?

"voltage high" means the petrol ECU is seeing an open circuit/high resistance-so will be an emulator problem more than likely-when switched to petrol the LPG ECU has to reconnect the petrol ECU to the injectors-there may be a high resistance somewhere that the noid light probably won't show up

only thing I can think of is borrow the same ECU from somewhere to get the component numbers/resistor value-but as said would be difficult to change the components anyway as it is SMD

try a compression test. Also try swapping the plugs about for the injectors-injector timing is not that critical-might show something up

Could even be head gasket-this caused my old cavalier to run on 3 because water was getting in

have you done the spark at plug test yet?

Check for spark at plug next, take plug out and ground it with some wire & put HT lead on

my moneys on a broken wire/LPG ECU fault-if your good with electrics you could always disconnect the LPG ECU and bridge the injector cuts to see if the fault clears

don't understand how you can get 27mpg on a run and 37mpg knocking about local? wonder if its been setup correctly

or connect a noid light (LED with resistor in series) across the injector terminals/plug to see if there is a pulse

fuel economy sounds low for a mini! I was getting 27mpg on gas out of a rover 600 turbo!

Conversion does sound a bit too cheap-but if its working ok then thats good.I hope it continues to work well-would be interested to hear of any problems as cheap and good don't always go together-I suppose the less the install costs the quicker the payback time

just my 2p worth, how many miles has the car got on it now? being a prins will probably outlast the car-you could always transfer it to the next car