LPG Gas Problems on D2 - brand new installatioin

[Slow Disco]

I've just had a sequential vapour injection Lpg system installed on my Disco 2, with petrol tank removed and an aux tank of 52 litres. Picked up yesterday and drove from Western Sydney to Yass. Car was idling roughly on gas and petrol. Car drove well on both and made good power. Driving home around Ingleburn the car started missing with part throttle at 80,90,100,110, 120km. Apart from that, car went well.

Next morning, had a quick look under bonnet and noticed 3 clamps which hold the gas lines onto the gas injectors weren't where they should be, an oversight on installation I guess.

Started car and let warm up for 5 minutes and drove off, car was nearly stalling and backfiring (running on petrol). Car was gutless on petrol, until it switched over to gas, then ok and made power. Idle was still rough on gas.

Drove to work, missing at highway speed was increasing.

Drove home this afternoon, car missing and backfiring on petrol, which I think has ruined my airflow meter. I had only replaced it a few weeks ago. It was giving the same symptoms as the previous meter which was damaged (pre lpg).

Kept driving home (total trip is about 90km), car is totally gutless/unresponsive and miss is massive.

Car has a brand new k&n filter which was on car prior to lpg and new platinum plugs 3k old. I have been given cheper NGK plugs (BKR6E) which I was going to install this weekend, also given a paper air filter.

So as it stands, the air flow meter is likely to be damaged as the result of the back fires - I got the vapour injection so there would be no backfires.

Rang Gas installer, he reckons it's a problem with injectors which pulse for the gas injectors as well. Funny how the car was running perfect and making good power prior to the gas conversion.

Looking for some ideas, fixes, experiences help etc.

What a pain, cost $5720 - Mr Howards gas rebate $2k. So as you can imagine I'm annoyed.

Thanks.

[101RRS]

If it is a brand new installation - take it back - you play with it and you have no come back

[4bd1discovery]

I've just had a sequential vapour injection Lpg system installed on my Disco 2, with petrol tank removed and an aux tank of 52 litres. Picked up yesterday and drove from Western Sydney to Yass. Car was idling roughly on gas and petrol. Car drove well on both and made good power. Driving home around Ingleburn the car started missing with part throttle at 80,90,100,110, 120km. Apart from that, car went well.

Next morning, had a quick look under bonnet and noticed 3 clamps which hold the gas lines onto the gas injectors weren't where they should be, an oversight on installation I guess.

Started car and let warm up for 5 minutes and drove off, car was nearly stalling and backfiring (running on petrol). Car was gutless on petrol, until it switched over to gas, then ok and made power. Idle was still rough on gas.

Drove to work, missing at highway speed was increasing.

Drove home this afternoon, car missing and backfiring on petrol, which I think has ruined my airflow meter. I had only replaced it a few weeks ago. It was giving the same symptoms as the previous meter which was damaged (pre lpg).

Kept driving home (total trip is about 90km), car is totally gutless/unresponsive and miss is massive.

Car has a brand new k&n filter which was on car prior to lpg and new platinum plugs 3k old. I have been given cheper NGK plugs (BKR6E) which I was going to install this weekend, also given a paper air filter.

So as it stands, the air flow meter is likely to be damaged as the result of the back fires - I got the vapour injection so there would be no backfires.

Rang Gas installer, he reckons it's a problem with injectors which pulse for the gas injectors as well. Funny how the car was running perfect and making good power prior to the gas conversion.

Looking for some ideas, fixes, experiences help etc.

What a pain, cost $5720 - Mr Howards gas rebate $2k. So as you can imagine I'm annoyed.

Thanks.


where did you have it fitted?

[Slow Disco]

If it is a brand new installation - take it back - you play with it and you have no come back
I can take it back, but the installer said they have no idea why it's running so crap. So if I get someone else to look at it who has a clue, it's likely to get sorted (fingers crossed) and I can bill the monkey for the work.

[Slow Disco]

where did you have it fitted?
LPGas1 in Michinbury, western Sydney.

[4bd1discovery]

LPGas1 in Michinbury, western Sydney.

ring dieselgas technologies located at penrith
(outer skirts of sydney)
they will fix it in no time mate.

[4bd1discovery]

47213675

[PAT303]

My D1 ran just like yours after the conversion,it didn't before but did after on both petrol and gas.I fitted low resistance leads and plugs and that was the fix,later it did it again after I gave it some welly and found it had sucked the air filter into the airbox and blocked off the intake to the motor.The airbox on my disco is rubbish and I am going to replace it with a clamp on filter to the MAF sensor.LPG needs a stronger spark,I have had 3 gas vehicles and they all needed it done. Pat

[Slow Disco]

Pat,
Mate - thanks for the advice, was just thinking leads and possibly coil packs.
Cheers.

[PAT303]

Just to add,make sure the leads are in the little clips and not touching anything,especially anything metal and not crossed over.It all helps. Pat

[Slow Disco]

Ta. I will also see if any leads have come loose on coils.

[Slow Disco]

Removed plugs (plantinum, on 3k old), they were totally stuffed. 1 bank all black, with evidence of spark. Other bank only half (1 side) black/burnt,with no evidence of spark. Started on petrol ok, sounded ok. Went for a drive and it started to play up again. Switched to gas and it was good for about 3 ks on the open road, did a uturn to come home and by the time I got to city limits I had no power again and running rough.

Pulled 1 plug out and it looked fine.

Coils - is a likely consideration?

Will look at leads tonight when she gets dark.

[PAT303]

Coils don't cause many problems,I would buy Low resistance plugs and leads,make sure they are when you buy them.If the plugs are knackered a new coil won't do anything.OK I just took one out and the electrode is grey and looks like new,they are NGK BP6E S.The things I do for you!!!! Pat

[PhilipA]

The first thing I would do before touching anything is write to the installer setting out the problems and request that they fix it within a reasonable time, and ask politely that if they feel they cannot that they pay for correction by another specialist.
Just make sure that everything is in writing so that if the problems are not fixed you have recourse to Consumer Affairs etc. And be polite.

You will have multiple coils, so check that there is no ooze from any of them.
I know little about LPG but it occurs to me that there must be an interface problem between your ECU and the LPG ECU or the installer has stuffed up a connection( my Bet)
I believe that the multi point LPG ECUs take a signal from the petrol ECU injector harness to determine the pulse width for the LPG injectors. I wonder if the petrol injectors are being turned off or the LPG injectors on in one bank. Maybe a poor connection.
Another area is the timing pulse from the crank sensor or cam sensor. Maybe a bad join.

Regards Philip A

[Slow Disco]

Pat,
The plugs I put in were bk6e. So I guess the same in the scheme of things. Thanks for pulling one out!!
Dave.

[Slow Disco]

Philip,
Thanks. I had emailed installer + phone call. He reckons cars problem was there before they installed gas, which isn't the case. I'll persevere with them, but will take it to LR guy to try and get it sorted etc. I really need to have 2 cars going, so cannot afford the delays.
Will post any updates, so others don't have the same dramas.
Dave.

[Utemad]

Do the petrol ECU and the LPG ECU both use the same oxygen sensors?

If they do it is a common link. If your plugs are black that would indicate it is running rich wouldn't it?

So if the oxygen sensors are not connected properly then maybe it runs rich as a default like the Disco1 would.

[SmokyBear]

When I had my system installed, the workshop insisted that they would not do any work unless the car was running perfectly & the ignition system was in tip top shape.

[PLR]

Removed plugs (plantinum, on 3k old), they were totally stuffed. 1 bank all black, with evidence of spark. Other bank only half (1 side) black/burnt,with no evidence of spark. Started on petrol ok, sounded ok. Went for a drive and it started to play up again. Switched to gas and it was good for about 3 ks on the open road, did a uturn to come home and by the time I got to city limits I had no power again and running rough.

Pulled 1 plug out and it looked fine.

Coils - is a likely consideration?

Will look at leads tonight when she gets dark.

G`day Dave , just a suggestion .

Take it for a run on lpg only don`t use petrol at all then pull all the plugs .

If there are a number of plugs that are black then it is possibly trying to run both fuels at the same time , this could explain why it acting as it is ( both loss of power and misfires ) and would be an installation problem and the installer would be hard pressed to argue .
It may have been the way he explained it but how he says the injectors work would be a worry for me if he`s serious .

Another thing is that i think it will be a franchise so head office may be an option .

Cheers

Peter

[Slow Disco]

Cheers Peter!

[p38arover]

You could try KLR Automotive (DieselGas Technologies) for an opinion before you take it back to Minchinbury. KLR are close by at Kingswood (Penrith).

They did the LPG install on my P38A and are also LR specialists.

[tempestv8]

What gas system is it? OMVL Dream XXI? Impco BRI? Landi Renzo? Prins VSI?

[redbuba]

I've just had a sequential vapour injection Lpg system installed on my Disco 2, with petrol tank removed and an aux tank of 52 litres. Picked up yesterday and drove from Western Sydney to Yass. Car was idling roughly on gas and petrol. Car drove well on both and made good power. Driving home around Ingleburn the car started missing with part throttle at 80,90,100,110, 120km. Apart from that, car went well.

Next morning, had a quick look under bonnet and noticed 3 clamps which hold the gas lines onto the gas injectors weren't where they should be, an oversight on installation I guess.

Started car and let warm up for 5 minutes and drove off, car was nearly stalling and backfiring (running on petrol). Car was gutless on petrol, until it switched over to gas, then ok and made power. Idle was still rough on gas.

Drove to work, missing at highway speed was increasing.

Drove home this afternoon, car missing and backfiring on petrol, which I think has ruined my airflow meter. I had only replaced it a few weeks ago. It was giving the same symptoms as the previous meter which was damaged (pre lpg).

Kept driving home (total trip is about 90km), car is totally gutless/unresponsive and miss is massive.

Car has a brand new k&n filter which was on car prior to lpg and new platinum plugs 3k old. I have been given cheper NGK plugs (BKR6E) which I was going to install this weekend, also given a paper air filter.

So as it stands, the air flow meter is likely to be damaged as the result of the back fires - I got the vapour injection so there would be no backfires.

Rang Gas installer, he reckons it's a problem with injectors which pulse for the gas injectors as well. Funny how the car was running perfect and making good power prior to the gas conversion.

Looking for some ideas, fixes, experiences help etc.

What a pain, cost $5720 - Mr Howards gas rebate $2k. So as you can imagine I'm annoyed.

Thanks.
Hi, their I have the same problem on a 2000 D2 only installed last week . the car ran fine before the install, then the same thing as yours they even left parts of when they gave the car back. Now its back in their work shop and having the coils and leads replaced at a cost of $850.00.

[mrapocalypse]

Lucky it's $0.55 a litre or I would rip the whole system out of mine and curse the day i ever did that to my vehicle. Once you get the plug leads sorted, you'll start to get on going problems with your ECU system that will no doubt never be fixed properly. The D2 System and the LPG system don't like each other at all. The biggest issue is the installers. They only have a vaugue idea of what they are doing to a Land Rover and in particualr a D2. I just live with my coughing, stinking, gutless Disco becuase there is simply no point in going back to the installer!

[tdiBrad]

Bruce Davis installs some type of gas injection system, he has it on two of his own vehicles, one of which is a Defender 90 that has to be seen to be believed. :burnrubber:

Give Davis Performance a call and have him check it, and try to talk him into a drive of one of his td5's with gas injection .. :twisted: