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1

Omega General Help / Re: LPG Revs high?

« on: 02 May 2013, 22:43:08 »

on my mig I had a split in a vacuum pipe to vapouriser and when it went on gas it revs went up-but mine is zavolli-and a local lpg specialist sorted it for me-so only know what he told me-dont know if winding me up or not-as what I know about lpg is the square root of f*** all -

now that makes more sense

Sure does make more sense just wish I know where the facking leak was then cause I've had a good look and no such luck lol I spoke to a bloke today who said something about a step up valve?

2

Omega General Help / Re: LPG Revs high?

« on: 02 May 2013, 16:28:18 »

because it detects more air and put in more gas=higher revs

Call me dumb but I don't really know what you mean. I've sprayed carb cleaner all around engine bay and looked for loose or pipes that are off and nouthing so I can't quite see how it's an air leak and even if there was it would behave the same on petrol as it does on gas and it's fine on the petrol.

3

Omega General Help / Re: LPG Revs high?

« on: 02 May 2013, 14:09:22 »

Just to add, if it is a VX from factory Duel Fuel, it will have a red / black button right side of gear change and the LPG Fuel Guage shares the same as the standard Petrol one.

Yer that's the one just as you described, I got told the other day I need new manifold gaskit but wouldn't of thought that would effect it should be ok.

air leak would raise revs especially on gas

So if I have an air leak why does it work ok on the fuel?

4

Omega General Help / Re: LPG Revs high?

« on: 02 May 2013, 00:06:59 »

clean throttle body

Bin done and new TPS and new Idle control valve

5

Omega General Help / Re: LPG Revs high?

« on: 02 May 2013, 00:06:04 »

Just to add, if it is a VX from factory Duel Fuel, it will have a red / black button right side of gear change and the LPG Fuel Guage shares the same as the standard Petrol one.

Yer that's the one just as you described, I got told the other day I need new manifold gaskit but wouldn't of thought that would effect it should be ok.

6

Omega General Help / Re: LPG Revs high?

« on: 02 May 2013, 00:03:59 »

Air leak somewhere on the inlet side, is it a VX badged Duel Fuel on the back, Koltek from memory, lots of issues with them.

No air leak it has been checked - again no problem on petrol

7

Omega General Help / LPG Revs high?

« on: 01 May 2013, 20:34:38 »

Short and sweet.. My Omega Duel Fuel more when it's warmed
Up, when you stop at the lights most of the time the revs can stick at 1500 if I give it a little rev it will most the time drop back to normal, it's not just on the idle as sometimes it can feel like a kind of cruise control for example driving at 30 put the clutch down and it's stuck at 1500 revs, I don't have this problem running on Petrol.

8

Omega General Help / Re: Omega LPG Revs running high??

« on: 07 March 2013, 18:48:06 »

Worth checking the idle control valve, IMHO. If it's a little sticky, it could be that it has a tendency to stick around the position that it needs to be in for idle on LPG, but is better around the petrol idle position. Give it a clean out with carb cleaner and a little light oil and see what happens.

Failing that, it needs some live data reading to figure out what's going on.

No air leaks, cleaned idle control valve and throttle housing through and it's still doin it. Had a mechanic look at it he said it could be a "step up valve" as the gas has an auto devise that revs a little more and they can play up anyone elaborate on that?

9

Omega General Help / Re: Omega LPG Revs running high??

« on: 26 February 2013, 21:10:50 »

Worth checking the idle control valve, IMHO. If it's a little sticky, it could be that it has a tendency to stick around the position that it needs to be in for idle on LPG, but is better around the petrol idle position. Give it a clean out with carb cleaner and a little light oil and see what happens.

Failing that, it needs some live data reading to figure out what's going on.

I'll defo give that a try it does look mucky around the housing thanks for that I think that will work

10

Omega General Help / Re: Omega LPG Revs running high??

« on: 26 February 2013, 14:32:34 »

Airleaks to throttle can cause wild rpm
check all lpg hoses and vacuum hoses with carb cleaner test and/or fairy liquid. depending on vacuum or pressure use.

Gone over the engine bay no air leaks?
Sprayed wd40 on throttle housing springs as well the problem still persists

11

Omega General Help / Re: Omega LPG Revs running high??

« on: 25 February 2013, 08:51:20 »

It wasn't fitted on the production line... They never were

Guessing its a Koltec Necam system but can't be 100% certain.

I would suggest starting with basics and checking/cleaning throttle body, breathers and Idle Control valve

Don't know how to put pics up :.(

Whilst doing it, have a look for some sort of ID on the system... If I'm right then there's good knowledge and advice on cleaning the LPG distributor on www.lpgforum.co.uk

They say every day is a school day
Cool I'll get some carb cleaner tomorrow and give that a shot it doesn't run high revs on fuel tho?

I agree it's a bit of a long shot with it being ok on petrol but you need to rule out the normal, more obvious potentials first. Perhaps you could get some photos up of the LPG stuff

12

Omega General Help / Re: Omega LPG Revs running high??

« on: 25 February 2013, 00:23:17 »

It wasn't fitted on the production line... They never were

Guessing its a Koltec Necam system but can't be 100% certain.

I would suggest starting with basics and checking/cleaning throttle body, breathers and Idle Control valve

Whilst doing it, have a look for some sort of ID on the system... If I'm right then there's good knowledge and advice on cleaning the LPG distributor on www.lpgforum.co.uk

They say every day is a school day
Cool I'll get some carb cleaner tomorrow and give that a shot it doesn't run high revs on fuel tho?

13

Omega General Help / Re: Omega LPG Revs running high??

« on: 25 February 2013, 00:12:55 »

Can you give us some info on the LPG kit you've got fitted? Maybe a couple of pictures.

I would love to put any pics up but could never work out how to on here.
The conversion is standard as it was built and roled of the production line as it is today, hence why it's called a "duel fuel"

14

Omega General Help / Omega LPG Revs running high??

« on: 24 February 2013, 20:24:46 »

Ok short an sweet...

Revs are fine when running on Petrol however, when switched over to the gas when I stop at the lights the revs are stuck at 1500 if I put it in gear and lift clutch with breaks on the revs settle back down and stay there fine. Seems a little strange can someone shed some light on this please

15

Omega Electrical and Audio Help / Re: Chipping ECU

« on: 07 January 2013, 18:46:23 »

Good point I forgot about the gas should be ok tho I would of thought?