Posted by David L on February 15, 2008, 12:10 pm, in reply to "Re: lpg problem"
203.17.42.10

Mate it's your ignition switch. You might be energizing the solenoid directly from a power source, but I'll bet you've got intermittant or no spark when turning it over from the ignition switch at the same time. Carbon copy of what mine did. cheers, DL --Previous Message-- : Thinking on this a bit more . : : I do think it is an electrical problem : . : : All i`m doing by putting power on the : solenoid is opening the gas flow from : the tanks to the convertor . : : If the gas was there at the convertor : it should start straight away , which : it does not . : : So the time lapse , winding over is for : the gas coming from the tank or line to : the converter . : : What do you think ? : : When it happens again i should be able : to prove it by undoing the filter and : if there`s no gas , i`ll have to go : looking but i`d need to have a leak : between the converter and the mixers : and although there is sometimes a : slight smell of gas , never strong . : : Or possibly the tank solenoid is : shutting off for some reason ? : : With the 2 tanks there is only 1 main : line to the converter but both tanks : join at a valve ( that i can`t think of : the name of ? ) : Could be that this valve is at fault , : it is not solenoid controlled but : mechanical . : : Trouble is it has normally happened at : a time not suited to investigation . : : Cheers : : : : --Previous Message-- : Hi all : : 85 BA duel fuel IMPCO system Twin carb : Twin Mixers Twin tanks . : : This is not from cold , it has to be : primed to start from cold , the problem : occurs when it is warmed and also often : when air temp is higher , it`s : intermittant and ongoing for a couple : of years . : : Every now and again but not of late and : even in the heat , the car won`t start : on LPG . : : It generally fires once and won`t start : when it occurs . Similar to when a : rotor is playing up . : : Other times it will it will run for : 5/10 sec and stop and not restart . : : Then other times it`s dead as a door : nail , winds but won`t start . : : It`s only ever happened twice after : refueling . : : The norm is the key is barely turned : and it fires , just sort of flicked on : and it fires , there is nothing wrong : with the start system . : : I can find no faults with the lpg : system or electrics related other than : the way i can start it when the problem : occurs . : : The way it can be started is by : disconecting the solenoid wires and : jumping a power wire to the main fuel : line solenoid at the converter . : : If i do this it will wind over for : around 5 seconds before it will start : but it will always start . : : If i don`t do this it can be wound over : for as long as you feel like , it can : be left and gone back to for 10/15/30 : minutes and it may or may not start . : : The way this part of it works is : similar to an EFI fuel pump , there is : a computer , it`s not the normal type : saftey switch ( well it`s called a : computer don`t know what`s in it )under : the dash so what i`m doing is like : jumping a power wire to an EFI fuel : pump . : : Sorry about the length but it`s a bit : hard to explain otherwise . : : Any ideas ? : : Cheers , Peter : : : :