Hi
I've had LPG fitted to my 99 Vectra 2.5 V6 for just under a year now and
I've notice that accelerating or applying power at low revs is no longer
smooth on LPG (fine on petrol), occasionally I get a quiet back fire if I
persist on keeping the pedal to the floor (overtaking at 50mph in 5th gear
instead of dropping a gear).

I have a feeling that one or more sparkplugs are not igniting the gas when
in the cylinder, could it simply be that I need new sparkplugs or is it
something more serious?

Thanks
Mark
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www.markdootson.co.uk

On Sun, 23 Apr 2006 21:29:24 +0100, "Mark & Tracey"
us@stewartonDOTorg wrote:

Hi
I've had LPG fitted to my 99 Vectra 2.5 V6 for just under a year now and
I've notice that accelerating or applying power at low revs is no longer
smooth on LPG (fine on petrol), occasionally I get a quiet back fire if I
persist on keeping the pedal to the floor (overtaking at 50mph in 5th gear
instead of dropping a gear).

I have a feeling that one or more sparkplugs are not igniting the gas when
in the cylinder, could it simply be that I need new sparkplugs or is it
something more serious?

Every problem i have with my gassed car always seems to be down to
part of the ignition system!
I just had trouble at low revs like you, and it was down to my points
(so probably not applicable to your car!). I didnt get any back fires
though - when i have had those it has been down to a single spark plug
or lead not working.

I had this problem when I refilled after the gas ran complety out. I put
some ignition system cleaner in the petrol tank drove the car around the
block a few times and left it over night. The next day I gave the car a
good run up the M1 after 5-10 min it was running fine.

On Mon, 19 Jun 2006 07:48:44 -0400, "steamingpete"
wrote:

I put
some ignition system cleaner in the petrol tank


What a mind boggling concept.


--

TSH

For email, replace 'SpamOnlyToHere' with my initials

LPG info. page: www.tshargrave.co.uk
Now with added Biodiesel (and getting a bit out of date)

That was ment to be put injection system cleaner in the petrol tank.

PLEASE DO NOT PUT ANYTHING IN YOUR IGNITION SYSTEM AND SAY PETE SAID TO DO
IT.