On the road again.... nearly

[matra530]

Back on the road.... but unfortunately not quite.

Today at 8am for the MOT and it went well until the emissions test. Unfortunately, the idle mixture setting is missing on the new carburettor..... As we don't have an exhaust gas tester, we agreed with the TÜV that we would just put everything together, roughly adjust the idle and do the rest on site.
But I'm still happy. The chassis, engine, brakes etc. were all classed as faultless. The TÜV manager tried everything to get the CO value below 4.5%, but we couldn't get any lower than 6.5%. Now I have to find out where the setting is on the new original carburettor. On the old carburettor it was on the driver's side towards the rear. On the new carburettor there is nothing to screw on.
Maybe you've already had this problem.

Greetings
Andreas

[roy4matra]

On the old carburettor it was on the driver's side towards the rear. On the new carburettor there is nothing to screw on.

Andreas,

If that is definitely a Solex 34 CICF 141, then that lower photo of the new carburettor looks to have a sealing cap over the adjusting screw, which was correct to prevent tampering.  Dig out that sealing cap, and the screw should be buried down in side the flange, just like the old one, in the upper photo.

Roy

[Anders Dinsen]

What an annoying problem. At least just one. Good luck getting it right!
/Anders

[matra530]

Thanks for the information. I removed the cap and, lo and behold, it looks fine now. Thank you very much.