LPG Discussion Forum

Spot on Gilbertd.

You don't need restrictors if you have the correct venturi's.

Been out tonight in the car ran beautifully

The saga for my 1995 LPG V12 Daimler is finally coming to an end. Still got the air con condenser to sort and the steering reach mechanism, but they are both known quantities. Key thing is I now have a working LPG system.

A quick recap - The LPG system fitted to the Daimler has clearly run in the ...

Defo too lean. Good guess on the mixers, the actual internal diameters are 37mm.

Spent some quality time with a baking tray this weekend making making reducers for the existing mixers. Tried 30mm restrictors and turned the LPG reducers right down - still too rich.

Clearly the ideal diameter is ...

Simon - will indeed do some more twiddling with the mix/idle. Figured out the OBD2 reader will show me what the lambda is doing on each bank. Will see what readings I get for petrol/rev range (underload) and twiddle the LPG to match.

Clearly the restrictors I chucked were there for a reason, so I ...

Apologies folks, especially to Gilbertd. I have re-read the thread and bolting the mixer plates on the throttle bodies is recommended by this forum.

Anyone any suggestions (nice ones!) as to which mixer plates are the right size/capacity for the Jaguar 6.0 litre engine and preferably just bolt up?

Car runs quietly on petrol, just the sound of ticking injectors. On LPG the car is almost silent.

Problem is the car seems to run lean, with the stepper trying to compensate. Idle is spot on, but the car lacks power when accelerating.

When I first got the car it had a pair of K&N's with home made ...

It has been a while since my last confession.....

Since then I have managed to sort out the auto gearbox limp mode. I dropped the pan, filter, soloenoid A and treated the gearbox to a fresh oil, and gasket. It made no difference. I put it in Sport mode - problem solved. I ran it round for a month ...

Pulled the filter - no one mentioned depressurising the system before pulling it - ask me how I know.....a loud bang, a smell of LPG

The filter had a slight dusting on it, thats it. Put it back together.

Had no response from my "Find a professional" post.

In the meantime had more twiddling with the Leo and reducers. Idle seems ok at nil turns. The earlier posts suggesting the restrictors in the airfilter were there to enrichen the mixture seems correct. I can increase the mixture on the reducers to ...

I have been posting in the having problems section, topic V12 Addict:

http://www.lpgforum.co.uk/viewtopic.php?f=28&t=13375&view=next

The advice has been good and I now have the LPG system fitted to my '95 Daimler Double Six working reasonably well. The car has been sat for approximately 3 years ...

I think the Leo can read the lambda, I can see the green, amber and red.

Turned the bias screw out 4 turns on both reducers and turned the idle all the way in. Set the idle actuator at 10, 10, 50, 50. Car ran nicely, smoother than on petrol. Idle was a bit low, so gave the idle screw a quarter of ...

I have the AEB software and a lead from Tinley that reads the Leo.

I have another lead that plugs into the OBDII port in the car - where I can read the fuel trims and O2 sensors, per bank.

Whats next?

Thanks to Rossko I replaced the HT leads and the misfire has gone. Pulled all the electrical and plumbing leads out of the MAP sensors and those error codes have gone as well. Also replaced the traction control actuator, front indicators, headunit, electric aerial etc...

Looks like I can finally ...

Brief update. This morning I had the following error codes:

P0106 - Manifold Absolute Pressure System Performance
P0311 - Cylinder #11 Misfire Detected
P1314 - Misfire Rate Catalyst Damage Fault - Bank 2

Not surprising the engine is not running right with those codes. At least bow I know (roughly ...

I am keeping an open mind, but 1A sounds a logical starting point.

Replaced the bung (wine cork) and the top radiator hose. Took the car for a spin and no hot mis-fire issues?!?!?!

Problem is the previous owner did less than 100 miles in the car over the last 3 years.

Will drive it for a few ...

The message from this Forum is clear, the current system is not fit for purpose. So I see 3 options:

1. Chuck the lot/do not use it - No outlay, but with 2k miles a year, LPG saving lost would be £250 a year.
2. Patch it up with another Leo (then I would have 1 per bank) and reconfigure the ...

Simon,

Would I have 1 Leo driving 2 reducers, 2 steppers etc, etc - no, agreed. I would love to have a multipoint, sequential injection system, but I am not holding my breath for Santa :D . My plan is to see if I can get what I have got working properly first, thanks to the input from this forum I ...

Update time.

Ok so I have the Leo software, plugged the lead in, read the manual and crucially I have the car back.

I can confirm the car DOES runs on LPG, I can hear and see from the indicator (amber) its working. Cut-over back to petrol comes with a slight hesitation. Idle is too low at 500 ...

Not sure how long the LPG kit has been on the car but it looks like quite a while as the pipe work and electrical wiring is looking a bit tired.

My aim is to get LPG kit working and take it from there. I now have the software, the leads and a manual, all I need now is the garage to finish with the ...

I can confirm there are 2 reducers / vaporisers feeding the 2 mixers. The single Leo 175 seems to be driving them both.

The current mixers have 3 bolts that dig into the plastic trucking and have deformed the trunking. You can see in the photo's the deformed and largely butchered trunking and the ...