'76 3.5l rangie running like a dog on gas

Joined: 31 Mar 2003 Location: Brisbane or 169.254.243.241

Hi guys,

I have had the gas for nearly 12 months on the rangie but all of a sudden
she is running like a dog on LPG, it misses and hesitates and backfires badly to the point of being un-driveable. This only starts to occur when the car heats up to operating temp before that it is ordinary but drivable.

So far I have

Replaced Points - Reset timing and points gap
Replaced Condensor
Checked the plugs (look ok only relaced 1 or 2 months ago)
Replaced Coil

All to no avail, any ideas guys, going to put a new set of plugs into her to see what happens next

Thanks guys
Tom

Joined: 16 Dec 2002 Location: Neither here nor there

Make sure you have enough antifreeze running through the system. If you don't, the gas converter can freeze and not give you any gas.

Joined: 01 May 2003 Location: The Gymp. QLD

why would that be more of a problem when the engine heats up?

Posted: Fri Oct 03, 2003 1:01 pm

maybe it's getting too hot ?? Embarassed

Joined: 16 Dec 2002 Location: Neither here nor there

That was a problem with mine, its not that the engine has heated up, its that its been running long enough for the gas to freeze the converter. It wont happen straight away.

Its pretty obvious if this is the problem.

Joined: 01 May 2003 Location: The Gymp. QLD

ahhhh the converter Rolling Eyes

Joined: 31 Mar 2003 Location: Brisbane or 169.254.243.241

Thanks for the lead, I will give it a try, any other suggestion

TIA

Tom

Joined: 03 Mar 2003 Location: St Helena, Melbourne.

Try putting a lowr temp thermostat in and check your converter and mixer for wear. Depending on what type of system you have there maybe a split in the mixer diaphram or you could just have an airlock in the coolant lines.

Joined: 31 Mar 2003 Location: Brisbane or 169.254.243.241

Thanks guys for the suggestions just FYI it ended up being the plugs, even though I only replaced them a few months ago the were shagged out. A new set did the trick

Thanks for the info

Tom

Posted: Mon Oct 06, 2003 9:05 am

Some LPG guy told me that rover engines that run LPG should have the STd plugs regapped or use platnum plugs

Joined: 31 Mar 2003 Location: Brisbane or 169.254.243.241

Yeah mick I am in the process of finding out what the go is with that,

A mate told me to get them re-gapped and use 1 grade colder temperature as the LPG will strip out the standard ones pretty quickly

(around 7000K I think IIRC)

I will post what I find out

Tom