Set Up

[jaimo]

Just fitted a used weber 32/36 that I got of Ivan so I know good but struggling to set mixture as really sooty (rich) done the 1 and half turns out etc what's best why of setting up the car including mixture dizzy timing etc etc as I used £15 fuel doing about 40-50 miles tops and a bit of running trying to set it up and now fuels less power than before could carb be at fault timing etc any advice please

[Bob Tucker]

Most likely either the choke is not coming fully off, or a stuck float

if its been stood for a while.

 

A dgav should give 30mpg + if not thrashed.

Edited May 24, 2015 by Bob Tucker

[jaimo]

So what's best way of knowing and sorting

[Bob Tucker]

How does the choke work?

Water or cable?

Either way, look down the throat when the engine is hot...the

butterfly should be edge on to you.

[jaimo]

Is auto choke water operated the choke top butterfly defiantly opens when warm so assume choke off I think lol

[Longboarder]

Easy enough to adjust the choke to be fully open and thus taken out of the equation. Couple of dabs on the accelerator pedal when starting from cold and a bit of nursing for a minute will get round the 'lack' of choke. The other thing that can make it run rich is float height/poor needle valve/too powerful a fuel pump. Pull the top off the carb to check condition of the needle valve and measure float height setting (and check float is sealed and has no fuel inside).

12 deg BTDC is a good starting point for timing.

 

Nigel

Edited May 22, 2015 by Longboarder

[jaimo]

Do I need a fuel regulator as removed standard sierra one on was think was adding to problems

[theduck]

Are you using the mechanical pump? Should be no need for a regulator if so.

[jaimo]

Yeah much pump

[jaimo]

Sorry. Mech pump

[Peter Bell]

Have you got a filter on the carb? I had a pancake style on one that just fouled the choke mechanisim. When removed it looked as though the choke was opening. Otherwise check there is no dirt stuck in the float needle valve..

[jaimo]

I have got a foam filter with base plate with base plate on the filter off the choke still works but notices the choke flaps are not solid vertical when off they move a bit loose like

[Peter Bell]

Try running it without the filter to see if it makes a difference.

[nigelt]

You might find that it needs servicing, such as the power valve maybe broken. Or it will need to be re-jetted. I used these guys to fix and recondition mine.

 

http://www.dellorto....rtsectionID=113

 

Nige

[Peter Bell]

Nigel if you are in Leighton Buzzard these people are good http://www.carbex.demon.co.uk/