Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: old cruiser on 11 November 2006, 17:26:15

Title: Cold running
Post by: old cruiser on 11 November 2006, 17:26:15

Does anyone get this with their 2.2 Omega; when engine is cold and around the 1500 -2000 rpm, I get what feels like driving over rumble strips, what I have noticed is that if fuel gauge is sitting between empty and 1/4 it's worse strangely enough but once engine is warm everything is fine.
Cheers Pete

Title: Re: Cold running
Post by: JamesV6CDX on 11 November 2006, 18:43:34

sounds like a little misfire

check the obvious like plugs etc

Title: Re: Cold running
Post by: Taxi_Driver on 12 November 2006, 18:41:47

Nope, not got that on mine, sorry.

The only time my coughs a bit is when it first switches to lpg when its still warming up

Title: Re: Cold running
Post by: Chopsdad on 13 November 2006, 21:02:46

I think I know what you mean - is it worse when you go downhill - ie foot off the throttle?

Cos mine gets little bursts of speed - and MID readout on fuel consumption shifts from 9999 to 45 MPG & then back again to 9999.  Sometimes feels like the wheels are unbalanced?

May just be settling in while the Lambda sensor heats up - but there'll be an expert along in a minute to advise.  :y

Title: Re: Cold running
Post by: old cruiser on 14 November 2006, 09:02:22

Haven't noticed it worse downhill, but the strange thing is that with low fuel in tank i.e between empty and 1/4 is particularly bad after filling up it's vertually eliminated!, now beginning to wonder about the fule pump not coping with low fuel.
Cheers Pete

Title: Re: Cold running
Post by: Marks DTM Calib on 14 November 2006, 09:08:53

It might be worth popping the level sensor/pump assembly out the tank and checking the pickup pipe....

Title: Re: Cold running
Post by: rpont on 14 November 2006, 12:22:00

When was the fuel filter last changed? Since it's when the fule is low it's likely to be something to do with the pickup pipe/pump/filter area. Mine sort of rumbled when the EGR valve needed cleaning but the engine light came on as well then.

Title: Re: Cold running
Post by: old cruiser on 14 November 2006, 14:18:52

Good point Mark, certainly worth checking pick-up pipe, is it easy to access and remove do you know off hand? can't remember from the last time I changed the fuel filter some months ago.
Cheers Pete

Title: Re: Cold running
Post by: Auto Addict on 15 November 2006, 06:55:57

Quote

Does anyone get this with their 2.2 Omega; when engine is cold and around the 1500 -2000 rpm, I get what feels like driving over rumble strips, what I have noticed is that if fuel gauge is sitting between empty and 1/4 it's worse strangely enough but once engine is warm everything is fine.
Cheers Pete

I used to get this before I cleaned out the throttle body and all the breathers, never had it since.

Title: Re: Cold running
Post by: old cruiser on 15 November 2006, 08:55:33

Cheers AutoAddict might be the wya to go then, did you have any other running probs/ warning lights on with it at the same time before you did the clean out?
Cheers Pete

Title: Re: Cold running
Post by: Auto Addict on 15 November 2006, 14:01:36

Quote

Cheers AutoAddict might be the wya to go then, did you have any other running probs/ warning lights on with it at the same time before you did the clean out?
Cheers Pete

No.

Title: Re: Cold running
Post by: old cruiser on 15 November 2006, 14:03:11

Ok thanks for that mate
cheers Pete