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[poohbear]

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?

[fiend61]

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

[poohbear]

cleaned the plenium and pipes same time as changed dis pack

[fiend61]

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

[poohbear]

icav what and were may that be

[fiend61]

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 

[poohbear]

will try that many thanks

[I_want_an_Omega]

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

[Marc Taylor]

What would you mean by engine surging?

[poohbear]

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

[Marc Taylor]

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??

[Gaffers]

Air leak?  :-/

[Marc Taylor]

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

[Marc Taylor]

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

[Gaffers]

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