Calling all LPG owners...

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Discussion

matt21

Original Poster:

4,292 posts

205 months

Tuesday 27th April 2010
quotequote all
...I have just converted my BMW to gas. BRC system. LPG fitters fitted 73 litres into the 80 litre tank. I did 80 miles since then and tried to fill up. Could not fit anything in.

Did a further 60 miles (and lost two of the four green led's on the gauge) and tried filling up again to no avail. Still nothing would go in.

Put another 30 miles on it, tried again and fit in £1. Is it likely I have a problem, a pessimistic fuel gauge or is it normal on a new tank not being able to full unless almost empty??

Thanks

matt21

Original Poster:

4,292 posts

205 months

Tuesday 27th April 2010
quotequote all
OnTheOverrun said:
Are you fitting the nozzle correctly?
yep. tried at two garages and get a few pence in. other people have checked and confirmed all is ok with nozzle!

matt21

Original Poster:

4,292 posts

205 months

Wednesday 28th April 2010
quotequote all
wildatheart said:
I run my BMW on gas and I have never had this problem; mine's an OMVL system, but I'm pretty sure you have a -minor- fault. Is your gas tank placed in the spare wheel well? They've done well to get 80 ltrs in there in that case. BTW, the LED gauge is pretty useless in my experience; I've got used to resetting my trip counter whenever I fill up, and start to think about refilling at 200 miles. You should get more, as my tank is 60 ltr (with a 4.4 V8).

Edited by wildatheart on Wednesday 28th April 07:17
Its a 80 litre cyclinder tank. Done a further 40 miles and used no more gas (according to the gauge on the tank and dash). Maybe its just totally inaccurate!

matt21

Original Poster:

4,292 posts

205 months

Wednesday 28th April 2010
quotequote all
yep, defo on LPG!!!

matt21

Original Poster:

4,292 posts

205 months

Wednesday 28th April 2010
quotequote all
OnTheOverrun said:
matt21 said:
wildatheart said:
I run my BMW on gas and I have never had this problem; mine's an OMVL system, but I'm pretty sure you have a -minor- fault. Is your gas tank placed in the spare wheel well? They've done well to get 80 ltrs in there in that case. BTW, the LED gauge is pretty useless in my experience; I've got used to resetting my trip counter whenever I fill up, and start to think about refilling at 200 miles. You should get more, as my tank is 60 ltr (with a 4.4 V8).

Edited by wildatheart on Wednesday 28th April 07:17
Its a 80 litre cyclinder tank. Done a further 40 miles and used no more gas (according to the gauge on the tank and dash). Maybe its just totally inaccurate!
One thing you can definitely do is ignore the gauge - they bear no resemblence to tank contents whatsoever! biggrin

Does sound increasingly like a valve problem to me, I'd get it checked.
think I will run it dry, and if I can't fill then will know I have a problem!

matt21

Original Poster:

4,292 posts

205 months

Thursday 29th April 2010
quotequote all
Update!

Done another 80 miles. Went from half empty (on the gauge) to quarter then back to half. I have concluded the gauge is crap!

Up to 250 miles on the tank now, so will run today then fill up tomorrow when it is surely empty.

If I cannot get anything in then I will concede I have a problem.

matt21

Original Poster:

4,292 posts

205 months

Thursday 29th April 2010
quotequote all
more news.

About 1/2 a mile from work it switched to gas all ok. Then I got to a junction pulled out and it stuttered and cut out. Eventually it stuttered back into life and was fine! Airlock?!

Now on 300 miles and the low gas light is on. Sounds about right I guess. I will fill up tomorrow and see if I can get any in.

Not having much luck so far!

matt21

Original Poster:

4,292 posts

205 months

Saturday 1st May 2010
quotequote all

Just filled up and put in 70 litres into a 80 litre tank!

Car running a bit rough with the engine emissions light on and only did 19mpg on gas compared to 28mpg on petrol!

The fitter advised I change my spark plugs due to a slight misfire on cylinder 1, and if there are still issues then could be the ignition coil.

Your thoughts?

matt21

Original Poster:

4,292 posts

205 months

Saturday 1st May 2010
quotequote all
Ray Luxury-Yacht said:
I've had LPG for about 5 years now.

The other posters are correct, the gauges are inaccurate, use the trip.

With regard to the misfire, you cannot use anything other than NGK spark plugs with LPG. Ask me how I know! So if you buy a set of these and fit them, you'll have no further misfire problems.
really, NGK only? Bosch?

matt21

Original Poster:

4,292 posts

205 months

Sunday 2nd May 2010
quotequote all
wildatheart said:
matt21 said:
Car running a bit rough with the engine emissions light on and only did 19mpg on gas compared to 28mpg on petrol!
You should be getting around 25-26mpg on gas in that case
quite. hoping new plugs and a few tweaks will have it running around 25mpg

matt21

Original Poster:

4,292 posts

205 months

Sunday 2nd May 2010
quotequote all
I have my LPG injectors placed on top of my engine cover, so not sure how to access to change the plugs? Anyone experienced this before?

matt21

Original Poster:

4,292 posts

205 months

Sunday 2nd May 2010
quotequote all
This system is a top of the range BRC, so I will keep taking it back til all is sorted.

matt21

Original Poster:

4,292 posts

205 months

Tuesday 11th May 2010
quotequote all
I have changed the plugs with NGK platinum and must concede it does drive better.

However, it still misses soon after changes over to gas and still get the engine emissions light on and a rough idle.

What shall I do, and what could be causing it??