How close to the exhaust is the supply line as the lpg supply line should be cold until it gets into the regulator not warm.Is the supply line heat shielded as it enters the engine bay or getting a full dose of exhaust heat?Is it the vapor injection gas system or the old style.What regulator and system are you using?OMVL ?sprint gas or other cheaper variants?It really sounds like a fuel delivery issue as you are not getting the volume of gas required at higher speeds.Commodore engines have issues with thier water system having air bubbles that cause air locks in the regulators by the time youve jumped out of the car to check for freezing it appears to be fine.You may have restrictions in the lpgas filters/locks.The water hoses,2,should be hot so hot you cannot leave your hand on them and if not freezing of the reg once again becomes the issue.Also the water hoses must be fitted in such a way that the top hose is suction and the bottom hose forces water into the reg,this is done to assist in eliminating potential air lock problems.To sum up your symptoms are consistant with poor water ciculation.
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thanx stormbrewin, there was 5 very small flakes in the filter, i run the car up on ramps & off an managed 2 get another 200ml of coolant in the radiator ,the fuel line even from the tank isn't all that cold & it is well clear of the exhaust & has a shield, its a OMVL dough nut type system . i sure it is water cause it was fine b4 i had 2 change the radiator , its ok on a trip in the morning (65klm) 5am hehehe but it is in the arvo when the prob started around 3-5pm . cheers bill
hello stormbrewin, 1st real test 2day 9/11sun ,all went well still going strong after 60klm
cheers bill
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