BlueMan
New Member
Hey all,
My 2009 VE Commodore has been having intermittent issues with the LPG for a number of years now. It can run great for months at a time without issue, but sooner or later it returns. When it happens the issue is always been the same. Upon first switching over to LPG for the day it runs like crap, check engine flashes up and a misfire on cylinder 3 is logged. Restart on petrol and it runs fine. Historically I could switch back over the LPG and it would run fine too.
Mechanic has had several attempts to rectify it including full gas service, checked cut over temperature sensor, coil replaced, gas injector replaced and a number of small leaks fixed. It had been running fine for the last three months except the check engine message each time car was started. It went in for a service and another attempt to fix just before Christmas whereby a few more small leaks were detected and fixed.
Within 5 days it was worse than ever. Now it's not only when first cutting over to gas, it can happen, seemingly randomly, when driving on LPG. Restart the car on petrol and it's a coin flip whether it will flip over to gas and if it does it may run for the next 30 mins without issue and then suddenly starts playing up again... On a number of occasions the car also struggles to start, I end up slightly tapping the accelerator to get it to start.
Car went back to the mechanic yesterday. He thinks it might be fuel tank purge valve which isn't shutting, apparently this is ported to the engine to stop fuel fumes? Or the spark plugs look worn, although they're iridium and were changed less the 80k ago and should be good for 120k? I'm not a mechanic but unsure how either of these would solely affect the LPG side only and only the one cylinder. The educated guesses/process of elimination have added up and I'm looking for something more definitive before shelling out again... Hoping someone has an idea or a recommendation for a good LPG mechanic SE suburbs Melbourne. Thanks
TLDR: Intermittent gas issue, runs fine on petrol. I'm hoping someone can either provide a more definitive solution or can point me in the direction of a good LPG mechanic in SE suburbs of Melbourne.
Cheers
My 2009 VE Commodore has been having intermittent issues with the LPG for a number of years now. It can run great for months at a time without issue, but sooner or later it returns. When it happens the issue is always been the same. Upon first switching over to LPG for the day it runs like crap, check engine flashes up and a misfire on cylinder 3 is logged. Restart on petrol and it runs fine. Historically I could switch back over the LPG and it would run fine too.
Mechanic has had several attempts to rectify it including full gas service, checked cut over temperature sensor, coil replaced, gas injector replaced and a number of small leaks fixed. It had been running fine for the last three months except the check engine message each time car was started. It went in for a service and another attempt to fix just before Christmas whereby a few more small leaks were detected and fixed.
Within 5 days it was worse than ever. Now it's not only when first cutting over to gas, it can happen, seemingly randomly, when driving on LPG. Restart the car on petrol and it's a coin flip whether it will flip over to gas and if it does it may run for the next 30 mins without issue and then suddenly starts playing up again... On a number of occasions the car also struggles to start, I end up slightly tapping the accelerator to get it to start.
Car went back to the mechanic yesterday. He thinks it might be fuel tank purge valve which isn't shutting, apparently this is ported to the engine to stop fuel fumes? Or the spark plugs look worn, although they're iridium and were changed less the 80k ago and should be good for 120k? I'm not a mechanic but unsure how either of these would solely affect the LPG side only and only the one cylinder. The educated guesses/process of elimination have added up and I'm looking for something more definitive before shelling out again... Hoping someone has an idea or a recommendation for a good LPG mechanic SE suburbs Melbourne. Thanks
TLDR: Intermittent gas issue, runs fine on petrol. I'm hoping someone can either provide a more definitive solution or can point me in the direction of a good LPG mechanic in SE suburbs of Melbourne.
Cheers
