lpg/gas

[ab56452001]

Hi my vr runs duell fuel , on the road it runs fine with both , but , idle on lpg is a fair bit rougher than petrol,anybody know why , shouldnt they be the same ? , ta.

[sleepa]

It's rougher because it isn't injected like the petrol is. It uses a vapour mixer system, which is similar to a carby. And it might need a slight adjustment. Older LPG systems tend to need tuning up at least once a year to keep them running properly.

[ab56452001]

Thanks for reply , starts up ok , like i saide on the road fine , but when i stop it nearly dies , sometimes does ! , only on lpg , its a lavarto system , arevthey adjustable ? , ta

[sleepa]

They are adjustable, but I would take it to an LPG fitter to get it adjusted personally. I tried to adjust mine, and I made it worse. It took me a good week just to get it running nice again. But, If you do want to adjust it yourself, there is a good article/thread on a ford forum, just search in google and you should find it.

[ab56452001]

thanks for that , anyone now of a decent lpg mob , around the northern suburbs of adelaidev ta...

[ab56452001]

Car getting worse by the day ! , in the morn or when cold note so bad , drive 5 km then its starts running crap , wont idle , konks out etc , switch over to petrol and goes ok , anymore ideas ? , ta..........

[sleepa]

It could also be the converter dying, or the spark plugs or leads could be old and not suitable for LPG as it needs a stronger spark to ignite it. That's all I can think of.

[ab56452001]

Yep you could be right , converter on the way out , couple a friends recon lovato not that good , dont know about plugs/leads , ran ok for weeks then suddenly crap , though it sounds like its missfiring after a couple of k's at under about 2000rpm , but only on lpg it seems...

[sleepa]

Inspect the plugs, and if the leads are old it's probably better to change them, it can make a massive difference.

[ab56452001]

Got car booked in for a yearly lpg service , on thursday ( prob never been done ) , whatever that means , wait and see what happens ...

[ab56452001]

Hi again , dropped of car this arvo at lpg place , got a phone call 1 hour latter saying oxy sensor stuffed giving false reading to lpg sys , and that air filter was blocked , 260$ , to do it all . So i picked car up and bought a filter for 10$ , tomora get an oxy sensor ( how much , 60$ on ebay ) will put it all in over the weekend then rebook lpg service , prob be another week till finished .