Terrible LPG mpg

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Does anyone know of a decent LPG service mechanic in Leeds?

Just bought a RR 4.4V8 and it's giving me 9.8mpg on LPG around town....
Wondering if an LPG service would improve this?

Cheers guys...
 
KILOCHARLIE said:
I think my lpg system is Autogaz. It was done by the previous owner 3 years ago by the green fuel company but I don't have any documentation and there's no logo's etc on any of the kit. The mechanic did say the vaporiser looked quite small in comparisons to other range rover conversions.

The performance is fine on lpg with no noticable difference in my eyes. Strangely enough a guy at my lpg fuel station says the only thing he could think of was that spark plugs have to be at their best but by his own admission he was mo expert.
Click to expand...

get someone there knows stuff looking, best bet, an indie , dealer will rip you off, location or about someone here will help,
 
Yep. Did that and have it booked in for next Tuesday. However got a new problem today! Hose at rear of engine burst and deposited my coolant all over the road! Need to replace that first and work out why it burst, so as to make sure it doesn't happen again!
 
Update on the old LPG service.
Car went in today and had a full LPG service including new filter etc.
The LPG technician told me that the fuel trims can't be adjusted on the Prins system as they are auto adjusting......
He did some readings on his laptop and said everything was 'tip-top'.
So he reckons that my mileage from a full tank (72 litres) should be around 160 miles.

Does this sound correct?
 
Not sure about the Prinz system but I'm getting around 3 miles to the litre on our L322 ( 3x 82 = 246.... ish), the P38 is better.
When I put a Bigas system on the P38 there were some basic initial settings but the ECU learns about fuelling (from the Engine ECU I belive?) but either way it works it all out and has been running well since. I'm sure one of the guys on here who knows more about the electronic side of the ECU's will be able to give you a definitive answer and put your mind at rest, but I think the Mileage estimate is a little low.
 
forthbridge said:
Not sure about the Prinz system but I'm getting around 3 miles to the litre on our L322 ( 3x 82 = 246.... ish), the P38 is better.
When I put a Bigas system on the P38 there were some basic initial settings but the ECU learns about fuelling (from the Engine ECU I belive?) but either way it works it all out and has been running well since. I'm sure one of the guys on here who knows more about the electronic side of the ECU's will be able to give you a definitive answer and put your mind at rest, but I think the Mileage estimate is a little low.
Click to expand...

Hmmm...I thought the estimate sounded a bit on the low side....
Problem is, I've only had the car 3 weeks and on 3 fills so far, it's giving me 150 miles to a full tank of LPG (around 72 litres)

Hence why I thought an LPG service would help improve mileage.
Someone correct me if I'm wrong?
 
GullH said:
Hmmm...I thought the estimate sounded a bit on the low side....
Problem is, I've only had the car 3 weeks and on 3 fills so far, it's giving me 150 miles to a full tank of LPG (around 72 litres)

Hence why I thought an LPG service would help improve mileage.
Someone correct me if I'm wrong?
Click to expand...

if you are doing a lot of around town driving its probably about right. Motorway runs it will be vastly improved
 
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