Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: poohbear on 07 May 2011, 17:14:58

Title: engine surges
Post by: poohbear on 07 May 2011, 17:14:58

hi my 2.5 petrol has just started to surge under load more so when warm >:( coil pack changed some 18 months ago and ht leads (coil vaux leads not) any idears?

Title: Re: engine surges
Post by: fiend61 on 07 May 2011, 17:31:06

i would start by cleaning out your breathers, mine was surging and this cleared it  :y

Title: Re: engine surges
Post by: poohbear on 07 May 2011, 17:34:26

cleaned the plenium and pipes same time as changed dis pack

Title: Re: engine surges
Post by: fiend61 on 07 May 2011, 17:38:36

18 months hmm could be getting blocked up again also clean out your icav  :-/

Title: Re: engine surges
Post by: poohbear on 07 May 2011, 17:40:07

icav what and were may that be :D

Title: Re: engine surges
Post by: fiend61 on 07 May 2011, 17:44:51

its to the right of the plenum as you are looking from front of car ---http://www.omegaowners.com/forum/YaBB.pl?num=1189893357
you can see it here  :y

Title: Re: engine surges
Post by: poohbear on 07 May 2011, 17:47:16

will try that many thanks :y

Title: Re: engine surges
Post by: I_want_an_Omega on 07 May 2011, 17:59:04

dont forget to oil the inside of it (lightly) after you have cleaned it out

Title: Re: engine surges
Post by: Marc Taylor on 07 May 2011, 19:04:59

What would you mean by engine surging?

Title: Re: engine surges
Post by: poohbear on 07 May 2011, 19:34:05

the car accelerates then seems to be held back as if being hit by a stong gust of wind, if you can understand that :o

Title: Re: engine surges
Post by: Marc Taylor on 08 May 2011, 07:58:29

I understand that, i seem to get that at about 3-4k revs.  Almost like i ant to accelerate but im gonna hesitate for a second or too.  What would solve this??

Title: Re: engine surges
Post by: Gaffers on 08 May 2011, 08:08:51

Air leak?  :-/

Title: Re: engine surges
Post by: Marc Taylor on 08 May 2011, 08:17:00

Possible? Would an exhaust leak cause it or even contribute to it?

Title: Re: engine surges
Post by: Marc Taylor on 08 May 2011, 08:18:16

Possibly related but when car is cold, and stopping at lights for example the revs take a long while to settle when holding it on the brake and a bit more so with rear demister on

Title: Re: engine surges
Post by: Gaffers on 08 May 2011, 08:23:57

Quote

Possibly related but when car is cold, and stopping at lights for example the revs take a long while to settle when holding it on the brake and a bit more so with rear demister on

That does sound like an icv/air leak issue.  Exhast leak would increase consumption/noise/smell

Title: Re: engine surges
Post by: Marc Taylor on 08 May 2011, 08:26:36

Brilliant, yet another problem to investigate.  Just when the list was getting smaller.  Any suggestions on how to solve? Or should i make a new thread?

Title: Re: engine surges
Post by: SteveAvfc. on 08 May 2011, 11:33:45

I drive a 2.2 petrol and had exactly the same problem after cleaning the breather pipes renewing the plugs and covers and cleaning the throttle housing  was still there done my head in tuned out to be the fuel pressure regulator two minuet job drives now like a dream.