Omega Owners Forum - Secondry air pump !

mar892ree

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Secondry air pump !
04. Aug 2006 at 21:26

Hi peeps,

Despite replacing the complete exhaust and CAT with genuine VX parts and replacing the manifold to block and manifold to CAT gaskets, the 2.2 is still a bit exhausty on start up !

No leaks in pipr work, have checked this several times !

I know the supposed location of the secondry air pump, but have failed to find it !
Give me a clue as to what exactly i am trying to find here ! How big is it, whats it look like etc

Photos would be brilliant if anyone with a 2.2 could take a snap for me !

For the more technical amoungst you, i know what the role of the secondry air pump is, and how it supposidly worlk etc, BUT how exactly does it pump air into the eshaust system, wheres the pipe work !
Were does it enter the exhaust system, is it through the block / head at some point, as its not directly in to the exhaust system, and not in to the manifold !

Cheers

Mark

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Marks DTM Calib Administrator Offline Ex Member Posts: 25671 Northern Hemisphere Gender: Drives: Astra J, Mum Bus, Dexta Tractor, 108 DMU wip	Re: Secondry air pump ! Reply #1 - 04. Aug 2006 at 21:36 As a general rule, the engine management systems with dual lambda control dont have air injection and as such I doubt its fitted to the 2.2.
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Markjay

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Re: Secondry air pump !
Reply #2 - 04. Aug 2006 at 21:37

As far as I know the 2.2 is the new generation of engines just like 2.6/3.2, and it might not actually have a secondary air pump... This has been done away with on the newer engines as part of a complete revamp of the emission control system, i.e. lower compression and no EGR. But someone may confirm regarding the 2.2....

*** EDIT1 Mark DTM beat me to it... Sad

*** EDIT2 but I got there before TheBoy hehe

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« Last Edit: 04. Aug 2006 at 21:40 by Markjay »

Alas, no more Omegas....

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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: Secondry air pump ! Reply #3 - 04. Aug 2006 at 21:37 i don't think air injection is fitted to any of the drive-by-wire Omegas...
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Marks DTM Calib Administrator Offline Ex Member Posts: 25671 Northern Hemisphere Gender: Drives: Astra J, Mum Bus, Dexta Tractor, 108 DMU wip	Re: Secondry air pump ! Reply #4 - 04. Aug 2006 at 21:42 EGR is generaly still fitted, its just the 2.6 and 3.2 were not sold into the states so the NOx emisions were not important.
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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: Secondry air pump ! Reply #5 - 04. Aug 2006 at 21:43 Markjay wrote on 04. Aug 2006 at 21:37: *** EDIT2 but I got there before TheBoy hehe i'm too drunk to type fast
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Markjay Omega Lord Offline Posts: 5452 London Gender:	Re: Secondry air pump ! Reply #6 - 04. Aug 2006 at 21:49 TheBoy wrote on 04. Aug 2006 at 21:43: Markjay wrote on 04. Aug 2006 at 21:37: *** EDIT2 but I got there before TheBoy hehe i'm too drunk to type fast You'r logged-in on a laptop at the pub?
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Markjay Omega Lord Offline Posts: 5452 London Gender:	Re: Secondry air pump ! Reply #7 - 04. Aug 2006 at 21:52 Marks DTM Calib wrote on 04. Aug 2006 at 21:42: EGR is generaly still fitted, its just the 2.6 and 3.2 were not sold into the states so the NOx emisions were not important. It's nice to know that since I changed from the 2.5 to the 2.6 I am no longer feeding my engine (well one half of it anyway) with burnt fuel...
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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: Secondry air pump ! Reply #8 - 04. Aug 2006 at 21:53 Alas no, unsocialable Stella tonight... Means more for me
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mar892ree

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if it dont undo, hit it
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Posts: 244
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Re: Secondry air pump !
Reply #9 - 04. Aug 2006 at 22:17

Hehhehehhe hahahhaha NO WONDER i cant find the b****y thing ! I,ve been looking for weeks ! Dohhhhhhhhhhhhhhhhhhhhhhhhhh !!!! Shocked

Oh well, thats that then, no more on me back looking for a glorified hairdrier ! Suits me !

So, apart from the exhaust, CAT, gaskets , what other reasons could i be experiancing an exhausty noise on start up !

I know people have mentioned the 2.2 is a noisy engine !

Cheers

Mark

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Auto Addict Administrator Offline OOF's Elder Statesman Posts: 10091 North Birmingham Gender: Drives: 2.6 CDX	Re: Secondry air pump ! Reply #10 - 04. Aug 2006 at 22:27 Depends what you call noisy, it ain't all that noisy.
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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: Secondry air pump ! Reply #11 - 04. Aug 2006 at 22:35 mines noisey when cold, but then again the exhaust is shot. Compared to my dads which is also a 2.2 but auto, mine is a lot louder.... but i am putting that down to the shot exhuast. Once warmed up though sounds fine.... Its just the V6's make a much more appealing sound when cold compared to 4 pots
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Marks DTM Calib

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Re: Secondry air pump !
Reply #12 - 05. Aug 2006 at 08:07

Markjay wrote on 04. Aug 2006 at 21:52:

Marks DTM Calib wrote on 04. Aug 2006 at 21:42:

EGR is generaly still fitted, its just the 2.6 and 3.2 were not sold into the states so the NOx emisions were not important.

It's nice to know that since I changed from the 2.5 to the 2.6 I am no longer feeding my engine (well one half of it anyway) with burnt fuel...

Well, it actualy feeds both halves as there are two ports in the bottom of the plenum....
.....plus its a good thing, if you can 'go large' on the EGR then it can help economy as its a simple way of dynamicaly reducing the engine cc.

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Markjay Omega Lord Offline Posts: 5452 London Gender:	Re: Secondry air pump ! Reply #13 - 05. Aug 2006 at 11:02 Didn't know they moved it to the plenum - I thought they did away with it altogether. Thanks for the info!
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Taxi Driver

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Re: Secondry air pump !
Reply #14 - 06. Aug 2006 at 10:15

Auto Addict wrote on 04. Aug 2006 at 22:27:

Depends what you call noisy, it ain't all that noisy.

I agree with AA......when i first bought the omega....i took it too vx dealer for cambelt/etc change.....they noticed it 'ticked' a bit when cold.....which i hadnt really noticed.....turned out to be exhaust mani cracked.....so if they could hear a bit of a tick (tho obviously bit louder if they had the bonnet open) then the engine carnt be that noisy when cold.

Only thing i can think off.....do you have the sound proofing fitted underneath the bonnet?
Maybe VX dont fit that on the GLS.....cost cutting!?

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