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LPG discharging and freezing inlet hose to manifold

Appears to discharge lpg and freeze inlet hose engine won't fire

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  • Cars & Trucks Master
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Check the gas supply valve, it must be defective.

Posted on Oct 26, 2012

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6ya6ya
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Posted on Jan 02, 2017

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stormbrewin
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SOURCE: LPG not working?

You will have to recheck that all the wires were reinstaled.The noise is the fuel pump.The lpg system has its own fuses so you will have to check them also.The only thing you touched was the battery so the problem is there somewhere..Earth wire is also important just double check all the things you undid.Let me know how you go

Posted on Oct 11, 2008

stormbrewin
  • 426 Answers

SOURCE: LPG probs

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.

Posted on Nov 03, 2008

  • 369 Answers

SOURCE: ANTI-FREEZE LEAK AT INTAKE/PLENUM MANIFOLD.

Not alot you can do but remove the intake plenum and have the gasket replaced.

Posted on Dec 01, 2009

  • 1 Answer

SOURCE: dual fuel vauxhall combo 53 plate -will not switch over to lpg

did you solve problem? i have exacly same problem!

Posted on Mar 02, 2010

  • 2 Answers

SOURCE: can you convert a mazda rx8 to lpg

i checked up on this and the answer is no due to the way the rotary engine works

Posted on Mar 07, 2010

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2 Answers

What are causes of excessive backfiring


have a car on LPG with intermittant back firing that blew up the air filter box. Just had it serviced yesterday !
The ignition coil unit was found to be faulty .

Nov 26, 2015 | 1997 Dodge Grand Caravan

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Lpg car


Wonder if it has a safety switch that requires engine pulses. Had a similar problem with my lpg car was wrong mixture would take like twenty attempts to start the car.

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Ford focus lpg won't work


This is something you may need a Professional to fix. Since the system is pressurized you would need to remove the pressure to change parts.

It is quite possible that a bad mix of LPG may have contained too much water and it froze, disabling the system.

These systems are more common in Hilo's and Industrial equipment than in cars. Big trucks have used this system for years.

Are you sure the LPG has not leaked and the LPG is not empty?

Be patient, I am sure we have other Experts who can add more solutions.

Mar 20, 2013 | 2001 Ford Focus

1 Answer

Lpg system has no gas getting to inlet manifold


you might want to check out the lpg regulator , it may have a blockage or some other problem with it. If it's a dual fuel system you mau want to also check the electonic switch that switched it from petrol to lpg. Another thing to check could be the lpg lines and joiners, a leak in these may cause the system to shut down. On top of all of that you may need to check that there is no blockage in the lpg line or the jet where it goes into the manifold. hope this helps.

Nov 26, 2012 | 1996 Jeep Grand Cherokee

1 Answer

My LPG regulator ices over and freezes in my Toyota Landcruiser dual fuel 4x4.


I would have it checked for a leak, when LPG leaks it will cause freezing of the valve. LPG under pressure gets extremely cold when it is released. I see this all the time around shut off valves on propane tanks. I am not a Toyota Mechanic so I can't say for sure, but it sounds like the regualtor has a small leak in it. Some fork trucks use these regulators and I have seen them freeze up just from being used as gas passes thru the regulator. does this freeze up when you are using LPG or does it freeze up all the time. If it is freezing while not being used, I would definatly have it checked for a leak.

Nov 15, 2010 | Toyota Land Cruiser Cars & Trucks

2 Answers

Started car running on petrol for 5 minutes with lpg switched on, clicking noise from lpg tank, slight smell of gas, when fuel switched to lpg engine cut out. start again on petrol, switch on lpg again,...


could be number of problems but often this is caused by valve on the inlet manifold which is electricaly operated and then it allows the gas in but it is also vacumn sensitive so a perished rubber pipe could cause it not to sense the vacumn .best advice without seeing it is to visit a mechanic that is conversant with LPG conversion

Apr 12, 2010 | 1997 Ford Explorer AWD

2 Answers

Runing on 5 cylinders number 1 cylinder is not firing sparks there but no power on lpg had wrong plugs in it just fuel plugs then we put lpg,petrol plugs da problem started then looks like valves burnt


do a compression test to make sure it is that cylinder.

once determined it is that cylinder, put a teaspoon of oil in the spark plug hole. If compression comes back then the vave is burnt, if compression stays down the rings are bad

Oct 14, 2009 | 1983 Ford Fairmont

1 Answer

LPG probs


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.

Nov 03, 2008 | Pontiac Montana SV6 Cars & Trucks

1 Answer

Running on lpg then stop turn engine off then start engine and drive 20 metres and engine stalls! switch over to petrol and runs ok switch back to lpg and stalls


check that your cooling system if full of coolant. the coolant that keeps the engine cool actually keeps the gas converter from freezing. alternatively is it hard to start of a morning when cold, if so could be butane wax build up from the gas, in the convertor.

Jun 22, 2008 | 2007 Toyota Land Cruiser

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