Exhaust Emissions - Mot Fail

[MikeM 5]

Had the 205 in for an MOT test yesterday but it failed on Emissions, only advisory was for a wheel bearing. Never had it failing on emissions before, but was always tested by my local friendly mot tester. I have moved to Inverness now so this is a different garage.

The car is fitted with A Newman 290 cam and twin 40 Dellortos, it runs well and idles well when warm.

I have got lone of my friends gunson colourtune kit, so I will give that a try and then take it back for retest.

 

If it fails again then I dont know what i will do! I fitted the standard solex carb back on it today but it just runs like a pile of poo. I stripped the solex down and gave it a blast with the airline but it still just runs the same, it wont idle on the Solex, runs fine above 2000rpm but just seems to run lean below that. Will put the dellortos back on tomorrow and try the coloutune kit.

 

Anyone have any suggestions?

 

Cheers

[Tandoh 17]

With such a wild cam, it won't run on the standard carb very well. When I had twin 40s, I had to have them leaned off by the garage whilst on the tester until it passed. I seriously dislike emissions tests!!