Reply With QuoteIs it using coolant?
I have been having issues for weeks with getting air in the coolant which results in the LPG freezing over. (3.9 V8)
I have new radiator thermostat, recent head gaskets, compression good,Natrad did a check of the coolant system vacuum it down and a Teekay checkstating they could not fault it.
I pressure tested the coolant system finding the radiator cap had failed(don't know why natrad did not pick this up) it relived at 15psi, but had asmall leak at almost any positive pressure.
I have changed the cap with a brand new rover cap. Now the system ispressurising as it should but when left overnight the pressure remains in thesystem, i.e. I undo the cap and cold water spurts out.
I am at the point that the block is the last suspect. I couldpressurise to 100+psi each cylinder when on top dead centre (valvesclosed) and look for bubbles in the coolant with the overflow capoff. However I am not sure how effective this is going to be as thepiston may be sealing the issue. Are there any other ways to check acrack in the block?
Major part of the heart and soul of AULRO.comIs it using coolant?
Ron B.
VK2OTC
2003 L322 Range Rover Vogue 4.4 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA
RIP Bucko - Riding on Forever
Master
From my experience it isn't a matter of air (but yours might be) it's been a lack of 'flow' through the system.
Was the problem evident prior to the work you had done?
Has anything been done that might slow/stop the flow of coolant through the heater/gas side of the cooling system.
These are general things, certainly not LR, does your vehicle have a 'normal' thermostat or DII in the bottom hose type.
Mike
AT REST
Undo the water hoses off the LPG converter. Connect two temporary hoses so you can fill the converter and observe the liquid levels. Turn on the gas system for a moment and then observe the liquid levels.
You can also stop the engine after running on petrol for at least 15 minutes and see if it still pressurises the cooling system. If your petrol doesn't work, isolate the gas converter pressure by removing a wire from the last solenoid before the converter and letting the engine stall from idle.
nismine01,
It is a d1 with normal thermostat. Yes it has a lack of flow once the engine fills up with enough air hence the LPG freeze. Only thing stopping the flow is the air or gas and then the lack of water.
P38arover,
It is hard to tell if it is losing water. Before I changed the cap the expansion tank maintained level although water was being pushed out. The radiator level would be slightly low. Now I have changed the cap the water spews out when cold so cant read the level. Certainly non on the ground so it is being pushed out or burnt if is losing water. It is as if something is maintain the pressure.
Bee utey. Runs fine on petrol, I have just disconnected the converter water pipes, bled the system, closed it off and run it up to temperature on petrol, just waiting for it to cool down so I can check if the pressure issue still exist with gas out of the circuit. BTW I did do the bubble into water test with no bubbles resulting. Fingers crossed it is LPG related
Roger
I had a similar problem with a rangerover on lpg, problem turned out to be a fractured heater pipe in the fire wall[from a roughly installed engine], when the water level dropped the regulator would ice up and the engine would stop or continue on on petrol
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