Solex 34 adjustment

[Ken Hanna]

Back to Tom's problem, is it possible that the base of the carburettor is warped, due to 'enthusiastic' tightening of the holding down nuts in the past?
Easy enough to check, using a small syringe filled with petrol, also easy to correct using a large file...
.

[Ken Hanna]

Tom, no reason at all why they shouldn't work fine together.
The single choke carburettors are much simpler than the later 26/35 twin choke type and usually not troublesome.

Have you popped the lid off to check for any 'white furriness' in the bowl, which sometimes happens when a carburettor has been badly stored?
In extreme cases, those deposits can block the emulsion tube, as my friend in America found when the only way he could drive his 250 van was with the choke partially on.

I destroyed one single choke carburettor trying to remove the brass plug above the emulsion tube, so now that I've stopped servicing, but still have quite a stock of parts lying around, I've got hold of an ultrasonic cleaner as a first line of attack when refurbishing carburettors.

Ken

Thank you all, I am learning by the minute.
Very confusing buying a pile of parts with multiple engines, carbs and manifolds. The only usable manifold was the one with the solex 34 pics10 mount which is why I fitted it.
The engine it is fitted to is an A06/635 which I understand is an M28/1.
Is there any reason why these should be incompatable?
Thanks again for your input - I now realise the throttle mechanism was meant to be operated by a rod rather than cable!

[Lomax76]

For information see what the white furriness can be. I though I had a spare petrol pump que nenni it was blocked by the white furriness. Amazing is it not?

Have you popped the lid off to check for any 'white furriness' in the bowl, which sometimes happens when a carburettor has been badly stored?

pump.JPG (155.5 KiB) Viewed 7087 times

[tomnorth]

Had my Lomax in today for its msva and delighted it has now passed.
Have now got the Solex 34pics 10 carb sorted after a lot of head scratching. It was running very rich with the plugs fouling up quickly. Checked things one at a time until finally discovered two jets had been switched - the external gN jet had been fitted internally where the AC jet should be and vice versa. The same thread but two very different shaped jets!
Now running so much better.

[Ken Hanna]

Tom, whoops a daisy.
That must take 2020's prize for 'bodgery with a vengeance', so well done on spotting the source of your problem.
As well as having a substantial air leak through the air corrector jet which had been installed in place of the idling jet, all 'air correction' of the mixture in the emulsion tube would have been lost.
The faster you went, the richer the mixture, but at far too high a rate...
Ken

Had my Lomax in today for its msva and delighted it has now passed.
Have now got the Solex 34pics 10 carb sorted after a lot of head scratching. It was running very rich with the plugs fouling up quickly. Checked things one at a time until finally discovered two jets had been switched - the external gN jet had been fitted internally where the AC jet should be and vice versa. The same thread but two very different shaped jets!
Now running so much better.