LPG servicing - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

EFFalcon · 05-14-2003, 03:01

anyone know what they do in an LPG service?
its recommended i get one on my LPG system every 20,000km's
what exactly is changed and whats the normal cost for one?
i asked the other day and they said $50.

IAN SCHMIDT · 05-14-2003, 03:34

lpg service usually involves draining convertor of oil build up and checking settings

taximan · 05-14-2003, 05:26

If its running fine I wouldn't bother

BLACK XR6-VCT · 07-06-2003, 20:47

My car has recently started to idle a bit rough on LPG at idle ( basically RPM dropps off when I come to a complete stop at the lights)...

I wonder whether I should take it for a service. PS. How do they drain the oil build up from the convertor. If this is all that they really do than it might be worth doing it myself.

I usually do all servicing myself and would like to be able to do the same for gas, but have never done it...

Help/tips appreciated.

Jake.

taximan · 07-07-2003, 05:39

There is a drain plug underneath the converter,unsrew it,thats all you do but I would be surprised if anything comes out.With regard to your idle problem look at the balance pipe,this is the big hose that comes from the bottom of the converter around to the air cleaner box,if it is cracked or if there is a hole or spilt the convertert will lose air pressure at idle causing a stall.Also check the PCV valve on top of the rocker cover,if this is dodgy it will upset the idle on gas

SPALDING GREEN · 07-08-2003, 03:17

The idle jet is also removed & cleaned , if it's pre-AU a relearn is also carried out. It's very important to make sure you are running the correct plug gaps & leads are in good condition.

AU1SIXA · 07-08-2003, 15:48

What are the correct plug gaps for AU on LPG ????
I also have some trouble on my AU with only on L.P.G. I give it the boot and sometimes it will get to 3500 and like lose power for like 500 rpm then take off again at 4000. Sometimes when it takes off again at 4000 it will change into second at around 4500 and not get to redline. Very interested in what could be wrong other than that my cars is flying i could not be happier.

BLACK XR6-VCT · 07-08-2003, 16:18

Quote:

Originally Posted by taximan

There is a drain plug underneath the converter,unsrew it,thats all you do but I would be surprised if anything comes out.With regard to your idle problem look at the balance pipe,this is the big hose that comes from the bottom of the converter around to the air cleaner box,if it is cracked or if there is a hole or spilt the convertert will lose air pressure at idle causing a stall.Also check the PCV valve on top of the rocker cover,if this is dodgy it will upset the idle on gas

Mate you're a champ!

I checked the things you suggested and they were all OK.

However, I continued to check other parts of the air intake, gas mixer etc. and noticed that the clamp where the air intake pipe goes into the throttle body had slipped off, and as a result it was sucking additional air! This would have upset the air/gas ratio which is mixed at the mixer!

Anyway, I put the clamp back on properly - fault fixed !

PS. I think that the spark gaps for AU are the same for LPG/Petrol.

Thanks for all the input guys.

AU1SIXA · 07-08-2003, 17:59

Thanks BLACKXR6-VCT. Yeah taximan knows his gas he always gives me great advice. I will do a similar check on mine on the weeekend check all the clamps. Did you find any oil when you undid the convertor be good to know if you did thats all. Also what other things inside convertor can play up.

BLACK XR6-VCT · 07-08-2003, 19:02

Quote:

Originally Posted by AU1SIXA

Thanks BLACKXR6-VCT. Yeah taximan knows his gas he always gives me great advice. I will do a similar check on mine on the weeekend check all the clamps. Did you find any oil when you undid the convertor be good to know if you did thats all. Also what other things inside convertor can play up.

I haven't actually had a chance to try to drain the oil yet.

SPALDING -Where is the "Idle Jet" located, and what is the procedure for removal & cleaning.

I would like to this and draining the excess oil at the same time.

PS. I noticed that the "balance pipe" inlet from the airbox is located before the air filter! Is this correct ? This would mean that it is getting dust and all sorts of crap sucked in...