AAArrrrrrrggggggggghhhhhhhh!!!!!!!!

[andynuttz]

Hey guys, i'm so angry i'm actually spitting when i talk firstly, my 1996 disco seemed a pretty good motor until i installed GAS, i've only had it 2 weeks and it's just been nothing but trouble, firstly, it has a loose connection which causes the gas to completely cut out which means i had to take it back to the place that installed it, not a big issue but i still wasnt pleased that i had to take a day off work to get it fixed, then this morning on my commute to work after 20ks it back fired then as i got to work it back fired again and stalled, the gas won't run now, so i switch it back over to petrol and the revs jump from 500 to 2000 back to 500 rpm every second for about 3 seconds before it stalls, i had it running once but now my car is stuck at my work 30ks away from home and 80ks where the garage installed it absolutely kabut, now i need my car for work as i work in land sales i use it to show people blocks of land in the bush and undeveloped land so basically my car is my office, worse still i was planning taking a trip to glass house mountains on tues for a bit of 4WD couple of days - anyone got any idea how severe the damage is or what the problem is so i can go and speak to the mechanic with a bit of knowledge...

Okay, Rant over, i feel so much better now... (i'm now going to my happy place!)

Andy.

[Debacle]

Where in Brisbane are you ? The best way to find a good lpg mechanic is to talk to a cabbie, they need to run 24/7 so need a good gas man.

[justinc]

Andy,

Have a look around the plenum chamber area and next to the throttle cable bracket for a missing vacuum/ breather hose. These can blow off during a backfire, and you won't get it to idle again with huge vac leaks.

You may have also damaged the airbox, this is a problem as dust can get past the air filter.

Keep looking and get back to us with the results. Can anyone post pics of the hoses I am talking about? specifically the ones to the stepper motor and the breather around the front of the plenum chamber to the flame trap.

Thanks, JC

[p38arover]

I agree with Justin, you probably blown off a hose. It's happened to me a few times.

Ron

[Mark86]

Have a classic injected rangie on gas for a couple years with no probs but usual reasons for backfire are ignition related leads rotor dist cap must be in good order or if motor is getting tired that is only time my backfired then had it rebuilt. Worst case is if the backfire has destroyed your airflow metre and will then run crap on petrol this is why a lot of people do not securely tighten there vacuum hoses to let pressure from backfire out if it happens. Sounds like you have a issue with the installer from the word go. Hope all goes well because these engines run well on gas.

Mark

[andynuttz]

cheers guys, i had a look under the bonnet (although not very much mechanical experience) and the air box had been completely blown off, the air filter was resting on the engine, the metal clips had all been broken and the arm to the main engine had come off aswell, managed to do a basic repair job (everything back connected where it should be), do you think if i run it on petrol that should be a short term fix before i get it to the garage on tues as she seems to be running fine... (starts first time and idles where she should do).

Thanks for all your help, it;s so much appreciated...

[rangieman]

cheers guys, i had a look under the bonnet (although not very much mechanical experience) and the air box had been completely blown off, the air filter was resting on the engine, the metal clips had all been broken and the arm to the main engine had come off aswell, managed to do a basic repair job (everything back connected where it should be), do you think if i run it on petrol that should be a short term fix before i get it to the garage on tues as she seems to be running fine... (starts first time and idles where she should do).

Thanks for all your help, it;s so much appreciated...

if your air box has blown apart use tape to hold it together

it should be fine on petrol consider your self very lucky you didnt damage your air flow metre

[George130]

I managed to bend the diaphram on the ford with a backfire. Ran like crap on Gas. Since a friend had a spare we just swapped out the parts. Good luck.
The ford's air box is held by straps (Similar to those octopus straps but with better clips) THat way a backfire will eith pop the pipe or open the filter box enough to escape before it closes again.

[Mark86]

Sounds like you may have been lucky enough not to have wrecked the airflow metre if it idles and runs normally on petrol can only suggest a short test drive. Safety warning for you when my backfire occured i started it up and idled fine but when i went to take off some how i picked i sticking throttle was quite a surprise when the car kept going but my airflow metre was not damaged.

All the best Mark

[justinc]

Sounds like you may have been lucky enough not to have wrecked the airflow metre if it idles and runs normally on petrol can only suggest a short test drive. Safety warning for you when my backfire occured i started it up and idled fine but when i went to take off some how i picked i sticking throttle was quite a surprise when the car kept going but my airflow metre was not damaged.

All the best Mark

Mark,

Avatar pic looks good, where was it and who went with you?
There is something about dusty loaded up RRC's...

Hijack over.

JC