Balancing and adjusting carbs? Moto Guzzi V50 Help!

[Willber]

Hi Guys,

I have a Moto Guzzi V50 (v-twin) which I am trying to set the carbs up on properly. I have bought a Morgan Carbtune II and hooked it up for the first time tonight. I have followed the instructions on both the Carbtune and also the V50 workshop manual however it will only show a reading on the left hand carb. Tried shifting the tubes round on the gauge (i bought the one with 4 levels on incase I use it in the future on a 4-cyl) so I know that all the gauges work but it just won't show a vacuum on the RH carb.

Anyone got any ideas or had this problem before? It's a bit odd as the RH carb seems to have more pressure from the exhaust than that of the LH carb but it won't show a reading.

Bit stumped to be honest!

Any help much appreciated.

Cheers

Will

[Willber]

Hi thanks for your reply.

I am pretty positive that the seal is ok, it was screwed in finger tight and I also tried two of the different nozzle adapters, the o-rings are in good condition (brand new)

Seems very odd I can't get a reading at all!

[Willber]

Thanks Rubin, by take off stub do you mean the screw on the intake pipe which I remove to connect the pipe to the carb?

What does it mean if I can blow through it but am still seeing no reading?

[Willber]

Ok i'm starting to get my head round this a bit better now, the manual is a bit vague and also its a photocopy so some of the parts of the diagram it refers to I can't see properly.

The carbs are Dellorto VHB 24's. As I understand it the idle speed screw has a spring on it and is located toward the top of the carb, and the mixture screw is at the bottom left of the float bowl. Does this sound about right?

I guess even if the screws are not wound in/out exactly the same amount it can still be set up properly? because in my case it seems that the screws will be at all sorts of levels!

Thanks again.

[Willber]

Thanks very much for your help.

I will report back once I have had another play with it tomorrow!

Cheers

Will