weber carb

timmo · Post by **timmo** » Mon Apr 18, 2011 9:43 pm

I have new weber carb plus associated bits to fit to my 1.3 samurai and it will need mot in 4 months time. I have a feeling it will fail emissions with the standard carb i have on it at the moment. Will the weber improve emissions? I know the aisin carb can be troublesome though my engine runs fine at the moment(plugs are a little black though).

twiss · Post by **twiss** » Mon Apr 18, 2011 10:52 pm

a well tuned weber should improve the emissions over a disfunctional aisin carb....

The blackened plugs caused by rich mixture could show the choke is on slightly?
the choke is the main problem with the aisin carb anyway

timmo · Post by **timmo** » Mon Apr 18, 2011 11:25 pm

dont know anything about aisan carbs. My 410 had manual choke. The sammy I have now I assume has auto choke that I think isnt working right as it is slow to start from cold

twiss · Post by **twiss** » Tue Apr 19, 2011 9:19 am

yeah it has a thermowax autochoke... basically horrible.
It's possible in that case that the choke may be stuck in a slightly open position?
Normally running rich and having a choke would make it start super easily in the cold...

If the choke is stuck at 3/4 open for example, there won't be enough choke to start, and too much choke to run perfectly...

timmo · Post by **timmo** » Wed Apr 20, 2011 4:24 pm

I reckon thats whats happening. I'll fit weber as soon as i get time. weber seems to have manual choke but i have no cable anyone know one to fit or do i just doctor something standard?

twiss · Post by **twiss** » Wed Apr 20, 2011 4:37 pm

Just buy a generic choke cable, and a little clamp to go on the end of the cable.
That's all you should need for the choke...

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