Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: 205squadron on 25 March 2010, 14:52:09

Title: 1999 Omega Elite 2962cc.
Post by: 205squadron on 25 March 2010, 14:52:09

This car runs lumpy on tick over. Runs well above 500 revs, was ticking over @ 600 revs. Have fitted new plugs, HT leads and a new Air Flow Sensor, but stil lumpy.
Can anyone help.
Ron G.

Title: Re: 1999 Omega Elite 2962cc.
Post by: Sixstring on 25 March 2010, 14:54:44

Change air filter and clean crankcase system out, then you will find it runs better. Have same car and year, made a load of difference! (see "how-to" on cleaning out)

Mike.

Title: Re: 1999 Omega Elite 2962cc.
Post by: Ghost on 25 March 2010, 15:23:29

As said clean your breathers and clean your icv.

and hello and Welcome.

Title: Re: 1999 Omega Elite 2962cc.
Post by: Shackeng on 25 March 2010, 17:57:45

Quote

This car runs lumpy on tick over. Runs well above 500 revs, was ticking over @ 600 revs. Have fitted new plugs, HT leads and a new Air Flow Sensor, but stil lumpy.
Can anyone help.
Ron G.

Welcome to the forum and good luck with the cleaning. :y

Title: Re: 1999 Omega Elite 2962cc.
Post by: neonomega on 29 March 2010, 10:14:07

hi intresting topic i have the same issue i changed all leads plugs cleaned icv and all breathers are also clean and i still have the same prob the breathers i cleaned where all the ones from that box behind the engine and the black strip on the top of the manifold but my 3.0 still runs rough on idle but clears when u take it above 600 odd revs strange

thanks

Title: Re: 1999 Omega Elite 2962cc.
Post by: TheBoy on 29 March 2010, 10:59:21

As well as a full breather clean, check for:

air leaks on intake
sticky ICV
that the throttle butterflies completely close

Title: Re: 1999 Omega Elite 2962cc.
Post by: Sixstring on 29 March 2010, 11:06:08

Oh yes, forgot about that one, good point, TB.

Title: Re: 1999 Omega Elite 2962cc.
Post by: neonomega on 29 March 2010, 12:12:44

hi i clean my icv with carb cleaner and i also cleaned where the butterflys are so they close propperly

thanks

Title: Re: 1999 Omega Elite 2962cc.
Post by: 205squadron on 30 March 2010, 16:28:44

Thank you for all your replies. A further development is since a new Air Flow Sensor was fitted the car will not start first time. Fires up but then stops, turn key again and engine starts straight away.This happens every time.

Ron G

Title: Re: 1999 Omega Elite 2962cc.
Post by: TheBoy on 30 March 2010, 16:51:01

Quote

Thank you for all your replies. A further development is since a new Air Flow Sensor was fitted the car will not start first time. Fires up but then stops, turn key again and engine starts straight away.This happens every time.

Ron G

Why was the MAF replaced?

Title: Re: 1999 Omega Elite 2962cc.
Post by: Richard A on 30 March 2010, 21:35:15

"Very interesting" same problem, engine turns over on the first turn of the key, but only fires and starts on the second turn, why !!!
regards
richard a