Un-Installing LPG P38 ???

Hi Guys n Gals,

I want to remove the LPG Gas conversion from my 1999 4.6 HSE
Is it possible to do myself or is it a job for a licensed LPG installer? (or un-installer)

The miles I do a week does not warrant the LPG and whenever I ask about head gasket problem I am told that an LPG approved service garage must do the work.

I just don't want the gas in any event to be truthful so it is definitely coming out.

Any info on an un-install would very much appreciated.

The system is Prins VSI LPG with a Stako 95 litre tank

If I can remove the system myself, then happy days.

Thanx in advance, Dave

just pull the fuse under bonnet or switch it to petrol after running it out of lpg,if you keep it fitted it will add value if you decide to sell it later

Hi i removed mine it was easy and if you have the tank in the wheel space then when you lift it out the car will sigh with relief ha is it a multi point injected

Thanks for that and I agree
To be honest I just want it out.
This is a project and I want to detail the under bonnet parts.

Strange world? I work for a Company based in willenhall lol

Thanks for a reply and have a great weekend

Dave

Markbarneyallen said:

Hi i removed mine it was easy and if you have the tank in the wheel space then when you lift it out the car will sigh with relief ha is it a multi point injected

Click to expand...

Thanks for reply
Not sure about multi point but the tank is in spare aperture
For sure it looks heavy .

Are then any cylinder head issues or manifold replacement required??

Enjoy ur Sunday, Dave

Frst i had my inlet welded up at local ally welder £45 then i removed ecu i cut the wires that spliced into car ecu and then soldered wires back together on loom. I've had no problems its a great car. i would warn you though getting rid of the tank is a pain even local caravaners who live in parks won,t take it even though its empty

The inlet manifold will have the injectors in them, they will need removing and blanking off, or a replacement manifold will be needed. Though if you are unsure you could always remove the parts you can do and get an approved garage to do the rest, pity you are so far or would help remove it for mine

Markbarneyallen said:

Frst i had my inlet welded up at local ally welder £45 then i removed ecu i cut the wires that spliced into car ecu and then soldered wires back together on loom. I've had no problems its a great car. i would warn you though getting rid of the tank is a pain even local caravaners who live in parks won,t take it even though its empty

Click to expand...

Well thats the electrics sorted lol
The tank will be an issue as you say but I bet it lights my BBQ when cut in half lol

Dave

john-sussex said:

The inlet manifold will have the injectors in them, they will need removing and blanking off, or a replacement manifold will be needed. Though if you are unsure you could always remove the parts you can do and get an approved garage to do the rest, pity you are so far or would help remove it for mine

Click to expand...

Thanks for that reply, appreciated,

Will source manifold and with previous advice sounds more or less straight forward??

As for the LPG kit, once out of the vehicle its for free complete not in bits n bobs.

Regards, Dave

I used Quick Steel to seal the holes in my inlet manifold last time I took some LPG equipment off.

It worked fine. You could hardly see the join after 6 months of dirt.

Other than that it's just a case of removing wires and soldering the ends together again. Your gas fuel line will be screwed or riveted to the floor pan, taking these off will give you holes in the floor that will need plugging.

I'm with wil2813, why not just leave it there...take the tank out if you're worried about the weight in the back, but it'll help you sell it come the time...

There's no reason anyone should have a problem with working on the head gasket in the future (are you expecting problems?). The inlet manifold will need taking off to change the gaskets, and your LPG (and petrol) injectors will come off with it. There's just a few plugs to undo, and some hose clips. Provided the mechanic puts it back together as he found it there should be no problem with it at all.

Lastly....can I have your tank?

MrGorsky said:

I used Quick Steel to seal the holes in my inlet manifold last time I took some LPG equipment off.

It worked fine. You could hardly see the join after 6 months of dirt.

Other than that it's just a case of removing wires and soldering the ends together again. Your gas fuel line will be screwed or riveted to the floor pan, taking these off will give you holes in the floor that will need plugging.

I'm with wil2813, why not just leave it there...take the tank out if you're worried about the weight in the back, but it'll help you sell it come the time...

There's no reason anyone should have a problem with working on the head gasket in the future (are you expecting problems?). The inlet manifold will need taking off to change the gaskets, and your LPG (and petrol) injectors will come off with it. There's just a few plugs to undo, and some hose clips. Provided the mechanic puts it back together as he found it there should be no problem with it at all.

Lastly....can I have your tank?

Click to expand...

Don't want to get into a raffle or auction over the LPG kit.
Once it is out then the whole lot (not bits n pieces) goes free to whoever wants it.

Thanks for reply and all above info has been great, so, Thanks guys and enjoy your Range Rovers

Dave

plymouthdave said:

Once it is out then the whole lot (not bits n pieces) goes free to whoever wants it.

Click to expand...

Be sure to let me know when you've got it out!

As the saying goes 'what comes around goes around' Once upon a time owners were rushing to install LPG on anything that did less than 20mpg! I'm right behind you on this one, I had a gas set-up installed on a 3.9 years ago - never again.

If it was mine I would leave it on and use it , I had 3 and still have 2 LPG range rovers in the last 12 years that all run on LPG with no problems , you hear of people having LPG problems but they seem to be with budget systems and cheap installs , prins is a top of the range system and I run this same system on the 2 range rovers I have now and as long as it's set up correct it should run faultless
However If you do want to uninstall it's not that difficult , you can undo all the gas pipes of the tank ,the inlet has a one way valve the outlet has a solenoid to shut off the flow but you will get a hiss of gas because the pipe will hold some gas (no naked flames when you do it ,out side is best ) the tank will unbolt out but depending how confident you are the are approx 40 wires that need to be cut and re-soldered as the gas Ecu harness is spliced into the petrol injection harness so the connection needs to be 100% no wrapping wires then sticking with insulation tape as this will give problems later,
Next is to remove the water hoses an t pieces ,dash board switch, fuel line and wires for sender unit and solenoid , then as mentioned in earlier posts the injectors will leave holes in the inlet manifold so the easiest way is to fit another ,some people put the injectors deep down in the inlet manifold which would need a new valley gasket or you may be lucky the injectors may be in the plenum chamber so you won't need to remove the lower manifold ( I'm typing this assuming yours is a Thor engine ) so that's about it take you time an make sure everything gets put back 100%

Great response fellers.
ALL comments taken on board

Regards, Dave