Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Dazzler on 25 March 2008, 16:04:29

Title: slight missfire?
Post by: Dazzler on 25 March 2008, 16:04:29

I used the car this morning, which took 2 attempts to start :-/
I used it on a 20mile trip then left it for about 4hrs.
When i started it, it ran up to 1200rpm with a slight missfire/popping :-/
There are no stored fault codes, all the plugs have been replaced, breathers cleaned etc....
After about 30secs the missfire stopped and all was normal again.
Any ideas??/?
What symptoms will a slightly leaking EGR valve give me??

Title: Re: slight missfire?
Post by: PaulW on 25 March 2008, 17:49:22

Sounds like mine lol!  Its gotten a fair bit worse since I did the coil pack.  Only does it though when its been stood overnight or longer...

I'm thinking either a very slow fuel leak, or the FPR sticking...

Yours may be something completely different though!

Title: Re: slight missfire?
Post by: Dazzler on 25 March 2008, 19:38:22

Is there any tests that can be done to the FPR??

Title: Re: slight missfire?
Post by: Dazzler on 26 March 2008, 08:21:16

No one else :-/ :(

Title: Re: slight missfire?
Post by: joffy on 26 March 2008, 12:33:33

my 2.0 did this....just a slight misfire under acceleration...turned out was the air flow meter running the car lean

jon

Title: Re: slight missfire?
Post by: Dazzler on 26 March 2008, 17:04:51

I have just changed the fuel filter, so i will see if that makes any difference or not :-/

Title: Re: slight missfire?
Post by: Dazzler on 27 March 2008, 17:13:53

Its been alright today, fingers crossed it continues ;)

Title: Re: slight missfire?
Post by: Dazzler on 27 March 2008, 18:05:06

I also blanked off the EGR valve as it was showing signs of leakage, not sure if this would have caused the problem though :-/

Title: Re: slight missfire?
Post by: Kevin Wood on 27 March 2008, 20:22:44

Faulty EGR could give a lumpy idle, certainly. Not sure about difficult starting. I guess it wouldn't help. Ordinarily it would stay shut until warmed up and cruising. :-/

Fingers crossed.

Kevin