Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: hacked offf on 24 May 2010, 10:58:29

Title: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 24 May 2010, 10:58:29

hello to everyone i know this problem must have been disscused before my 2.5v6 has no pulling power i could hear an air leak so i had the plenum off it was definatly leaking, took it off, trapped wire in there (must have been when LPG was fitted) cleaned it replaced o rings refitted it, started it up even less power than before no misfires! Help!!! can some kind person point me in the right direction,

Thanks :-[

Title: Re: Lack of power under 2500rpm Help!!!
Post by: Jimbob on 24 May 2010, 11:04:51

Hello & Welcome.

1st this is to check for fault codes, use the link in my sig for a how2.

Apart from that, airleak now gone?  car serviced well?  is this on lpg or petrol, or both?

Title: Re: Lack of power under 2500rpm Help!!!
Post by: Kevin Wood on 24 May 2010, 11:07:24

Hello and welcome to the forum. :y

Are you seeing a lack of power on both petrol and LPG or just LPG?

I am thinking that, if the LPG system was calibrated with a huge air leak, it will need to be recalibrated now. If it doesn't run well on petrol I would say you have another problem somewhere, though.

If it's recently been converted and has run poorly since, I would take the car back to the garage who did the conversion and point out their error as a first step.

If that doesn't bear fruit there is plenty of LPG knowledge on here. :y

Kevin

Title: Re: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 24 May 2010, 11:22:15

Thanks guys really quick replies, No Fault codes, it is doing it on both petrol and LPG ? the conversion was four years ago.

Title: Re: Lack of power under 2500rpm Help!!!
Post by: TheBoy on 24 May 2010, 11:36:51

both multirams working properly?

Title: Re: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 24 May 2010, 11:42:21

Thanks TheBoy dont know, how will i test them? i know months ago there is a small black box at the bottom for the radator that has a vacum pipe that go's to the multi rams this was broken i have boged it up

Title: Re: Lack of power under 2500rpm Help!!!
Post by: RobG on 24 May 2010, 12:00:23

Blip the throttle. Rear should kick in around 1000rpm front around 4000rpm

Title: Re: Lack of power under 2500rpm Help!!!
Post by: TheBoy on 24 May 2010, 12:13:59

Quote

Thanks TheBoy dont know, how will i test them? i know months ago there is a small black box at the bottom for the radator that has a vacum pipe that go's to the multi rams this was broken i have boged it up

Ah, thats the vac reservoir for the multirams. Has it been poor since then?

Title: Re: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 24 May 2010, 12:34:56

Thanks , it was poor before i found the vac res pipe fitting was broke as i said before i thought i'd fixed it how will i know if thats the problem and if the multi rams are working ,would that account for the total loss of power it is driving like a old slow tractor.

Title: Re: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 24 May 2010, 13:48:45

will putting the small pipes on the plenum in the worng order affect the whole air problem?

Title: Re: Lack of power under 2500rpm Help!!!
Post by: RobG on 24 May 2010, 13:56:36

Check your connections here http://www.omegaowners.com/forum/YaBB.pl?num=1152565204

Title: Re: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 24 May 2010, 20:46:58

hi guys Just done the paper clip test got theses results
No 33 X 3  EGR valve voltage low
No 57 X 3 idle air control voltage low
No 74 X 3 mass air flow sensor voltage high
No 129 X 3 EGR valve feedback voltage low
what is do you think is my best course action :'(

Title: Re: Lack of power under 2500rpm Help!!!
Post by: RobG on 24 May 2010, 20:50:27

Disconnect the MAF and try it. Other codes possibly relate to low battery

Title: Re: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 24 May 2010, 21:14:44

There are 2 plugs that into the big pipe from the air filter which one should i disconect?  and what will it do when it is disconected?

Title: Re: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 24 May 2010, 21:50:48

Just unpluged air mass meter just made it worse tried to drive it just no power HOW SLOW!

Title: Re: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 25 May 2010, 09:15:30

help guys running out of ideas
thanks

Title: Re: Lack of power under 2500rpm Help!!!
Post by: hacked offf on 26 May 2010, 23:19:51

gone back to the drawing board took it all to peices again,found what i think could be some of the problems
undid the four hoses of the breather box on top of the plenum took it of the plenum tried to blow down all four tubes the two of the big ones where fine but one of the small one was completely blocked, i have cleaned all the pipes and channels with carb cleaner loads for crap came out, all clean now could this small blockage be part of the problem?