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| newbie |
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Hi,
I was just wondering if someone could tell me what exactly is involved in changing a duel fuel car to staight lpg? If it matters it is a 4ltr Eb2 Thanks in advance |
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| Disco Frank |
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umm stop running it on petrol would be the easyest way!
other wise it s**t i have no idea about LOL
_________________ RIP SCOTT |
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| cougar30 |
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Age: 58 Posts: 202 Joined: 9th Nov 2004 Ride: EL Fairmont + EF gli Location: Redcliffe, Brisbane |
I have An EA Fairmont Ghia that has only run on gas for the last 9 years i.
its done 440000 Km with no major problems ...the wife is driving the EA now ... so that might change 
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| newbie |
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The problem is it has starting and running problems in petrol at the moment, and with my lpg system (OMVL) it always starts in petrol then when the car hits a certian rev range it switches over to gas.
I have been told that for some reason on my car this rev range is higher than normal around 3000rpm, and that car does not like having to do this in petrol. So what i really wanted to know is how do you always make it start in lpg? Is it a computer thing? Also dont want to have to compromise the cars tuning by running both fuels as we cant seem to find a happy medium between petrol and gas. Thanks Steven |
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| rawlinna |
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newbie wrote: The problem is it has starting and running problems in petrol at the moment, and with my lpg system (OMVL) it always starts in petrol then when the car hits a certian rev range it switches over to gas. This post is probably a bit stale now but it may help you Steve
I have been told that for some reason on my car this rev range is higher than normal around 3000rpm, and that car does not like having to do this in petrol. So what i really wanted to know is how do you always make it start in lpg? Is it a computer thing? Also dont want to have to compromise the cars tuning by running both fuels as we cant seem to find a happy medium between petrol and gas. Thanks Steven Your car would have a petrol start assist (PSA) component fitted. Some gas equipment doesn’t allow the car start all that easily on gas alone, especially when cold. The PSA could be by-passed to start the engine on gas and not use petrol at all, but I suspect you may end up with long cranking times with OMVL when the engine is cold. I use Impco equipment, which I’d recommend for straight gas or starting an engine on gas alone. Someone more familiar with OMVL may have clues about the best way to over ride it. |
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| Disco Frank |
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newbie wrote: The problem is it has starting and running problems in petrol at the moment, and with my lpg system (OMVL) it always starts in petrol then when the car hits a certian rev range it switches over to gas.
I have been told that for some reason on my car this rev range is higher than normal around 3000rpm, and that car does not like having to do this in petrol. So what i really wanted to know is how do you always make it start in lpg? Is it a computer thing? Also dont want to have to compromise the cars tuning by running both fuels as we cant seem to find a happy medium between petrol and gas. Thanks Steven ahh well it sounds liek you may havea petrol problem. . . if the car is having dramas on petrol check out your fuel pump and filter also a common problem with dual fuel cars is that the injectors can gum up due to lack of uses, also the fuel can actually go off it is not used maybe drain the tank add a new fuel filter and some injector cleaner and see how u go!
_________________ RIP SCOTT |
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| newbie |
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OK thanks rawlinna, thanks for that info, unfortually i cant afford to change my gas system if i could.... i wouldnt use gas at all
Discofrank, thats exactly what my mechanic said, however the car starts instantly on petrol mode and runs good, however it just when i have been running in lpg when the engine is turned off or just before i turn it off (tried switching to ptrol then turning engine off) it just sits there turning over for ages. I noticed recently that the converter is actually frezzing up.... so i read a previous thread on fordmods about this, whilest i definatly have coolant in my car, the converter doesnt have any thing running through it.... makes me think when my coolant pipes went in toomooba they did fit the lpg system into it 
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| Disco Frank |
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ok if the car runs on gas it means there is coolant flowing into the convertor
you have said the car runs rough on petrol and gas?? also with the convertor freezing up take out the thermostat and see if that helps..... hard to explain but depending on the thermostat u have u may need to chop some of it off some companies take the convertor coolant lines from the heater lines with summer the thermo stat opens more blockign flow to the heater lines hence blockign flow to the convertor
_________________ RIP SCOTT |
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| newbie |
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ok thanks Discofrank
I will have a look into the thermostat Thanks alot Steven |
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| NC Steve |
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I have a OMVL system in my Fairlane. Newbie, do you have the gas petrol switch that is a little black box and has the LPG fuel guage built into it? If you do to start it on gas you simply switch it to the middle. Also if you want it to start on petrol and switch to gas at a lower RPM then there is a variable resistor on the back of that box that adjusts the RPM it switches at.
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