Please Help !!! Failed on Emissions

paulandberyl · Mar 22nd, 2008, 11:26

Hi all

My S40 (1999 Gdi engine) has just failed on emissions. The person looking at the car for me has done an oil and filter change, the plugs have been replaced, the breather pipe (I think that’s what it is called, has been checked, the throttle housing is clear. Does anyone know what else can be done? Would appreciate your help. Thank you.

Randy Acevedo · Mar 22nd, 2008, 11:41

Sir,
Have the lambda sensor checked out. That will make the emissions better and give you alot better gas savings. If you want to know more about a lambda sensor. Get Bosch fuel injection & engine management great book.By Charles O. Probst,SAE.
Hope this helps.

Randy

Multiplex · Mar 22nd, 2008, 14:22

Try putting a fuel system cleaner (Redex etc) in the tank and giving it a good blast up the motorway. GDIs suffer from coke build-up on the injector nozzle as they are located inside the cylinder and not in the inlet manifold like a conventional petrol engine.

I have had a few GDIs fail on the emissions myself and sometimes this is all it takes to get them to pass so its got to be worth a go first.

Rooster · Mar 22nd, 2008, 14:23

Take the car out and give it a dam good thrashing, that usually cures it

phillipo1972 · Mar 22nd, 2008, 14:58

which aspect of the emmisions test failed? - also, what is the cars mileage?

5seaterT5 · Mar 22nd, 2008, 15:20

Quote:

Originally Posted by paulandberyl

Hi all

My S40 (1999 Gdi engine) has just failed on emissions. The person looking at the car for me has done an oil and filter change, the plugs have been replaced, the breather pipe (I think that’s what it is called, has been checked, the throttle housing is clear. Does anyone know what else can be done? Would appreciate your help. Thank you.

Chuck a can of injector cleaner in the tank and run it for a few miles fairl hard,try something like FORTE (plenty on ebay) or similar.Only bout £10/15 a can.

shrewsbury_sam · Mar 22nd, 2008, 22:06

nothing new for the gdi lump. all it needs is a good "italian tune" on 1/4 tank put a full bottle of cleaner in it the hammer the crap out of it. done this many times with the gdi. and sometimes you will be amazed the amount of crap that comes out the back. but id that dont work the head may have to come off and be cleaned manually

Jo_Jo · Apr 7th, 2008, 17:44

l've always put Cataclean in the tank and run it, to clean out as much of the cat as possible.....then take it for a good run so the engine is good and warm before taking it back in for a re-test.

Good luck!

Mar 22nd, 2008, 11:26	#1
paulandberyl New Member Last Online: Sep 15th, 2008 18:40 Join Date: Apr 2006 Location: sca	Please Help !!! Failed on Emissions Hi all My S40 (1999 Gdi engine) has just failed on emissions. The person looking at the car for me has done an oil and filter change, the plugs have been replaced, the breather pipe (I think that’s what it is called, has been checked, the throttle housing is clear. Does anyone know what else can be done? Would appreciate your help. Thank you.

Mar 22nd, 2008, 14:23	#4
Rooster Speed freak Last Online: Apr 3rd, 2020 22:04 Join Date: Nov 2003 Location: Yorkshire	Take the car out and give it a dam good thrashing, that usually cures it __________________ 04 XC90 D5 --- Big bus 00 pug 306HDi --- Run about 88 pug 309GTi --- Project track car 07 CB600 Hornet --- 2 wheel fun

Mar 22nd, 2008, 11:41	#2
Randy Acevedo New Member Last Online: Aug 16th, 2008 14:09 Join Date: Mar 2008 Location: Arvada/ CO	Sir, Have the lambda sensor checked out. That will make the emissions better and give you alot better gas savings. If you want to know more about a lambda sensor. Get Bosch fuel injection & engine management great book.By Charles O. Probst,SAE. Hope this helps. Randy

Mar 22nd, 2008, 14:22	#3
Multiplex Senior Member Last Online: Jan 29th, 2019 22:42 Join Date: Dec 2001 Location: North West	Try putting a fuel system cleaner (Redex etc) in the tank and giving it a good blast up the motorway. GDIs suffer from coke build-up on the injector nozzle as they are located inside the cylinder and not in the inlet manifold like a conventional petrol engine. I have had a few GDIs fail on the emissions myself and sometimes this is all it takes to get them to pass so its got to be worth a go first.

Mar 22nd, 2008, 14:58	#5
phillipo1972 phillipo1972 Last Online: Apr 10th, 2008 22:09 Join Date: Apr 2007 Location: bristol	which aspect of the emmisions test failed? - also, what is the cars mileage?

Mar 22nd, 2008, 22:06	#7
shrewsbury_sam Junior Member Last Online: Jan 29th, 2009 17:50 Join Date: Mar 2008 Location: shrewsbury	nothing new for the gdi lump. all it needs is a good "italian tune" on 1/4 tank put a full bottle of cleaner in it the hammer the crap out of it. done this many times with the gdi. and sometimes you will be amazed the amount of crap that comes out the back. but id that dont work the head may have to come off and be cleaned manually

Apr 7th, 2008, 17:44	#8
Jo_Jo Junior Member Last Online: Dec 28th, 2017 11:07 Join Date: Jan 2008 Location: March, Cambs	l've always put Cataclean in the tank and run it, to clean out as much of the cat as possible.....then take it for a good run so the engine is good and warm before taking it back in for a re-test. Good luck!

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