LPG issues

[walpumur]

hi guys - im new to this forum so gday recently bought ( 3 months ago) disco 2 2004 102kms in pretty good cond
petrol /gas was looking for a diesel but only could find car with too many kms
so happy with new disc BUT a few weeks back it started running really rough on lpg and I was getting 250km per tank before the toughness now only getting 150km per tank, could someone out there help me out cheers:D

[bee utey]

Questions for you:

1. Your location.

2. The type of LPG system.

3. The capacity of your LPG tank.

4. How well does it run on petrol?

5. Has it been looked at by a LPG specialist recently?

[walpumur]

margaret river
system is Prins
no have not seen anyone about this yet
and it fine on petrol and its about a 60ltr gas tank
thanks

[bee utey]

You could have a stuck open injector. Undo all the hoses off the injectors that lead to the cylinders, then pressurise the rails with some compressed air. You can do this either by finding a MAP sensor hose and using that, or blowing it in via any injector outlet. If you find that one injector doesn't hold pressure, undo the whole rail and pump some carby and throttle body cleaner into each injector with compressed air until the fluid runs out the rails inlet fitting. Once you've done that blow everything clean with more air, then see if the injector holds pressure. If your injector doesn't come good with a few goes of cleaning fluid, you may be able to get replacement injectors. Normally if an injector goes open circuit the LPG ECU senses a fault and refuses to run on gas. Also clean out or replace your filter element.

Filter supplier (http://www.ebay.com.au/itm/PRINS-LPG-INJECTION-SYSTEM-FILTER-6-8CYL-/251401715834?pt=AU_Car_Parts_Accessories&hash=item3a88b5c07a)

WA LPG engineers (http://www.yellowpages.com.au/wa/north-lake/profire-engineering-pty-ltd-12454381-listing.html?context=businessTypeSearch)

[walpumur]

yeah thanks for the info and links
we give it a shot