MOT Emissions FAIL - Help!

[24_Valve]

took the mig for its MOT today and got failed on emissions... the car past the emissioins test at the same garage last year... got 10days to put it right but the question is.. how?

the readings are:

2nd fast idle test:

CO limit 0.3 - actual value 0.51 FAIL

HC limit 200ppm - actual value 145 PASS

Lambda limit 1.03 - actual value 1.05 FAIL

Bosch ESA v 2.35 uk

I also have a centre exhaust leak - don't know if it's relevant?

any idea's welcome 

[Bent valve]

Put some new plugs and a new air filter in and give it a
good screwing down the motorway

[Gaffers]

The leak will throw off the emmissions, guaranteed.

[24_Valve]

Posted by: Bent Valve Today at 20:32
Put some new plugs and a new air filter in and give it a
good screwing down the motorway 

new plugs fitted about 6 months ago, air filter about 2yrs.. ?

[aaronjb]

Exhaust leak will probably make it read lean - which it does (lambda 1.05 is lean of stoic)

And the car is, in fact, running rich (elevated CO & HC)..

Get the exhaust leak fixed, change the air filter, reset the ECU (I'm assuming the Omega stores long & short term fuel trims like most cars), clean the MAF if appropriate, get it nice and warm and take it for a nice long drive, then take it back to the MOT station.

But get the exhaust leak fixed first.

[markfree]

Exhaust leak will probably make it read lean - which it does (lambda 1.05 is lean of stoic)

And the car is, in fact, running rich (elevated CO & HC)..

Get the exhaust leak fixed, change the air filter, reset the ECU (I'm assuming the Omega stores long & short term fuel trims like most cars), clean the MAF if appropriate, get it nice and warm and take it for a nice long drive, then take it back to the MOT station.

But get the exhaust leak fixed first.

If all that fails try a can of cataclean

[Mr Skrunts]

and make sure the shuv the sensor all the way up the exhaust . . . . . . 

[24_Valve]

thanks for the advice - will get leak fixed & replace air filter (reset ecu etc..) and maybe buy some cataclean? does it work better than fuel additives such as redex etc..? also would valve lift treatment help?

[3.2 CHARLIE]

took the mig for its MOT today and got failed on emissions... the car past the emissioins test at the same garage last year... got 10days to put it right but the question is.. how?

the readings are:

2nd fast idle test:

CO limit 0.3 - actual value 0.51 FAIL

HC limit 200ppm - actual value 145 PASS

Lambda limit 1.03 - actual value 1.05 FAIL

Bosch ESA v 2.35 uk

I also have a centre exhaust leak - don't know if it's relevant?

any idea's welcome 

Scrap-time !!! Sorry !!

[aaronjb]

thanks for the advice - will get leak fixed & replace air filter (reset ecu etc..) and maybe buy some cataclean? does it work better than fuel additives such as redex etc..? also would valve lift treatment help?

As I understand it, cataclean and redex are designed for different jobs - one is supposed to 'restore' the CAT, Redex is designed to clean & restore the fuelling system on the car..

Can't hurt to try a can of both, mind!

Valve lifter treatment won't do anything for emissions, though, it's just good for treating sticky (tappy) hydraulic lifters (if you're lucky)

[Marks DTM Calib]

took the mig for its MOT today and got failed on emissions... the car past the emissioins test at the same garage last year... got 10days to put it right but the question is.. how?

the readings are:

2nd fast idle test:

CO limit 0.3 - actual value 0.51 FAIL

HC limit 200ppm - actual value 145 PASS

Lambda limit 1.03 - actual value 1.05 FAIL

Bosch ESA v 2.35 uk

I also have a centre exhaust leak - don't know if it's relevant?

any idea's welcome 

Thats a clue....whats the engine temp and do you have any codes stored

[Road Hog Mad]

Maybe its just time for car heaven.

How many miles has it done?

Surely engines conk out at some point despite being well maintained.

[Marks DTM Calib]

Maybe its just time for car heaven.

How many miles has it done?

Surely engines conk out at some point despite being well maintained.

Lol, useful...........not 

[Road Hog Mad]

Maybe its just time for car heaven.

How many miles has it done?

Surely engines conk out at some point despite being well maintained.

Lol, useful...........not 

[toxic34]

My car passed the emmissions with one of the center exhausts snapped but failed because there was too much escape of the exhaust gases as well as other stuff. Just been stung for 450 notes.