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quick answer needed
Posted: Fri Oct 23, 2009 12:51 pm
by beamer-boi
my car failed on emissions by 48% on co level will changing spark plugs cure the problem?
Re: quick answer needed
Posted: Fri Oct 23, 2009 1:01 pm
by Daf318is
Unlikely, it may help but it won't get rid of that much crap from the exhaust.
Re: quick answer needed
Posted: Fri Oct 23, 2009 1:02 pm
by beamer-boi
what will help removing the crap?
Re: quick answer needed
Posted: Fri Oct 23, 2009 1:09 pm
by blitz877
how dirty is the air filter??
Re: quick answer needed
Posted: Fri Oct 23, 2009 2:47 pm
by pac1982
Does your car smoke at all?? mine did i i assume it was the valve stem oil seals which is quite an in depth and costly job so i just dropped a new engine in before the MOT
Re: quick answer needed
Posted: Fri Oct 23, 2009 4:22 pm
by beamer-boi
the air filters clean and the car does smoke a little bit at first but when its warmed up it stops
Re: quick answer needed
Posted: Fri Oct 23, 2009 6:04 pm
by gooner1
beamer-boi wrote:the air filters clean and the car does smoke a little bit at first but when its warmed up it stops
Give it a good spirted blast before the Mot.
Re: quick answer needed
Posted: Fri Oct 23, 2009 6:06 pm
by sihooker
What engine is it?
Re: quick answer needed
Posted: Fri Oct 23, 2009 6:10 pm
by beamer-boi
M20 I think n I jus changed the spark plugs and it runs alot better
Re: quick answer needed
Posted: Fri Oct 23, 2009 6:16 pm
by sihooker
Maybe have a look in the distributor cap and give it a CAREFUL clean of the contacts. The stronger the spark is,the better the burn will be...
Re: quick answer needed
Posted: Sat Oct 24, 2009 12:46 am
by beamer-boi
they told me at the mot station to put some petrol cleaner in with my petrol n tht would improve emissions but i dno whether it is worth it eny1 tried it if so wots the outcome?
Re: quick answer needed
Posted: Sat Oct 24, 2009 12:56 am
by sihooker
At 48% fail it'll probably take more than that to fix it.
You need to address all the service items, and as Will said,the blue temp sensor too needs checking too.
Don't give up,but don't think this'll go away easy either....
Re: quick answer needed
Posted: Sat Oct 24, 2009 1:07 am
by Speedtouch
48% ?!8O According to the Haynes manual, a 325i should have between 0.5-1.5% CO !
Something must be way adrift. I'd check the usual service items, then the compression of each of the cylinders to see if the valves/piston rings are leaking.
It could also be worn injectors - see the Zone Wiki on how to clean them:
http://www.e30zone.net/e30zonewiki/inde ... _injectors