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(Post Link) post #1 of 25 Old 03-09-13 Thread Starter
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NCT Co2 fail

Alright lads, need some advice.

1996 Spider 2.0 ts, passed everything apart from Co emissions, oh and PS headlight too high but thats easy enough. Before I get someone to look at it what can I do. I am changing out the air filter right now and cleaning the MAF. The air pipe looks fine with no cracks.

Co. failed High Idle - CO 0.6vol% limit is 0.30%

Do I have to go to a main dealer/Ti autos or can I let a local lad with a tester have a look?

Some advice needed.
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(Post Link) post #2 of 25 Old 03-09-13 Thread Starter
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Co. failed High Idle - CO 0.6vol% limit is 0.30%

http://s1123.photobucket.com/user/Da...tml?sort=3&o=0

Last edited by Davetech74; 03-09-13 at 14:08.
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Could it be a hole in the exhaust dave? My old cynos failed the nct on emissions and that was the cause, just not sure if it was co2 reading that was affected?

Welder is here if it is a hole anyway lol.
 
(Post Link) post #4 of 25 Old 03-09-13 Thread Starter
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No Jim I don't think its the exhaust, made a visit to a guy I know with a pit during the week to give it all a look over and an oil change. The local motor factors didn't have an airfilter for it then so only fitted it this afternoon post failure. Pity as cleaning the MAF and the new air cleaner has made a huge change in performance. First drive in it after, I drove past my estate and kept going it was so much fun. The air pipe to the throttle body was dirty to so I don't think that would help either. I have a set of plugs that a guy gave me, his story was they had about a thousand miles on them when his GTV was crashed but because they cost 120 euro he took them back out but never used them. So I might fit these on the weekend as I am on shift the rest of the week then get a local garage to check the CO levels before I go any further.

Hopefully I don't need the welder for a while yet...

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Could be the lambda sensor
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(Post Link) post #6 of 25 Old 04-09-13 Thread Starter
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Going to give this crowd a go - Terraclean Ireland - Healthy living for your car

Was given the thumbs up by the lads on the 916 spider forum. They will test emissions before and after to see the difference. Supposedly gives the mpg a boost too.

After that I will start swapping bits like the lamda...
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I'd try giving the car a good thrashing before the test and make sure the cat is nice and hot. Then retest.
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I'd try giving the car a good thrashing before the test and make sure the cat is nice and hot. Then retest.
That should always be done before an NCT-good call Gavin...
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Interesting on the terraclean - after changing my egr and cleaning the map, i'm still having the dreaded rough idle and hesitation when the engine is up to temperature. It's looking like it could be a coked head - i wonder if this could do the trick? Might give it a go & report back ...
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(Post Link) post #10 of 25 Old 04-09-13 Thread Starter
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Well its 135 all in for 2 litre and up and I am going to drive to Wicklow to get it done as they will do the emissions test beforehand and after. They don't do that with the mobile vans. So I will report back too.

Booked in for the 16th

Last edited by Davetech74; 04-09-13 at 17:25.
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Good luck and cheers - i'll be following suit soon
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Your HC emissions look a bit high also although it passes the NCT limit. I just hope it is not the cat that is on its way out.. as I say you might try ragging it right before the test to make sure the cat is properly lit (up to temperature).

That terraclean stuff seems pricey! You could get your injectors ultrasonically cleaned, serviced and flow tested for less.
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Think my issue might be more to do with sticking exhaust valves than injectors so I'm wondering if this might reuce the carbon deposits in the head itself ... 135 is cheaper than a full head de-coking I reckon
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Interesting on the terraclean - after changing my egr and cleaning the map, i'm still having the dreaded rough idle and hesitation when the engine is up to temperature. It's looking like it could be a coked head - i wonder if this could do the trick? Might give it a go & report back ...
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Well its 135 all in for 2 litre and up and I am going to drive to Wicklow to get it done as they will do the emissions test beforehand and after. They don't do that with the mobile vans. So I will report back too.

Booked in for the 16th
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Think my issue might be more to do with sticking exhaust valves than injectors so I'm wondering if this might reuce the carbon deposits in the head itself ... 135 is cheaper than a full head de-coking I reckon
Ask Dublinsean, he got his done (156 2.4JTD 10V).
I think it was terraclean (do they de-ionise it? I feel like Jennifer Aniston - now for the science bit).
He said it made a massive difference-come to think of it I think the guy in Finglas did it...

Not convinced about it for petrol engines though (Davetech)
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Cheers for that - might drop him a pm. Hope everything works out with you and joey ...
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Cheers for that - might drop him a pm. Hope everything works out with you and joey ...
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Cheers for that - might drop him a pm. Hope everything works out with you and joey ...
That'll learn me for mentioning her eh?
Not in to her at all...
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Cheers for that - might drop him a pm. Hope everything works out with you and joey ...
Alphapapa - you'll be hearing from my solicitor if you keep putting out rumours like that about Mufasa and myself!! He is a nice guy but....!

PS: Welcome to AO!
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Alphapapa - you'll be hearing from my solicitor if you keep putting out rumours like that about Mufasa and myself!! He is a nice guy but....!

PS: Welcome to AO!
You'll laugh but it took me a minute when I read the post first.
I thought he was referring to you and couldn't fathom the connection....
And I'm not even blond-barely have any hair left actually....
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Cheers Joey - no offence intended!!! P.S. are your cars ROSSo by any chance??? (I'll get my coat now)
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Cheers Joey - no offence intended!!! P.S. are your cars ROSSo by any chance??? (I'll get my coat now)
Laughter is medicine for the bones!
Good man-need to keep the best side out.
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Cheers Joey - no offence intended!!! P.S. are your cars ROSSo by any chance??? (I'll get my coat now)
Yes, I believe they are Rosso (but just one of them is mine).
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Yes, I believe they are Rosso (but just one of them is mine).
The joke was Ross the plank from Friends...
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Cheers Joey - no offence intended!!! P.S. are your cars ROSSo by any chance??? (I'll get my coat now)
Nice!
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The joke was Ross the plank from Friends...
Thanks for the explanation Mufasa - I think I'll change my name to Captain Slow!
Nice one Alphapapa!
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