CARB SPECIALIST IN CORNWALL?

[ste140ve]

I have a 1976 T140V fitted with a pair Amal Premier Mk1 Concentrics. The bike has a fairly severe mid-range misfire to the point where I have not been able to ride it for many months now. I have eliminated other possible causes (coils, ignition timing issues etc etc.)

I live in West Cornwall and would like to know if anyone knows of a carb specialist in my area that really know his stuff.

Any help would be hugely appreciated as I have reached the extent of my ability to solve the problem.

Thanks guys.

 

[ManInTheJar]

I have a 1976 T140V fitted with a pair Amal Premier Mk1 Concentrics. The bike has a fairly severe mid-range misfire to the point where I have not been able to ride it for many months now. I have eliminated other possible causes (coils, ignition timing issues etc etc.)

I live in West Cornwall and would like to know if anyone knows of a carb specialist in my area that really know his stuff.

Any help would be hugely appreciated as I have reached the extent of my ability to solve the problem.

Thanks guys.

Before going to a carb specialist it's always worth while systematically dismantling and checking the carbs yourself.

Carbs are fairly straightforward to work on once you get over the initial trepidation. The Amal website has lots of technical resources to help troubleshoot and tune them and parts are readily available at reasonable prices. Premiers are unlikely to be badly worn, although this can't be totally ruled out so it's more a case of cleaning and setting them up.

Before dismantling take a note of how many turns the pilot screws are set at (count the number of turns required to screw them fully in) and the approximate position of the throttle stops. Things to check are dirt/ water in float bowl drain plugs, fuel flow into carbs, float levels, specs (jets, needles(position/size), slides etc), dirty/gummed up passageways. Once everything is cleaned and in spec they can then be set-up and balanced. When refitting check the flanges are flat and clean and avoid overtightening which can warp them and introduce air leaks or distort the slide bores.

A couple of tips before starting to rebuild them :

• Get some carb cleaner (Euro Car Parts are much cheaper than Halfords)
• Buy gasket/seal kits - really cheap from Classicbikeshop. Consider new carb filters from the same source depending on how dirty the old ones are.
• Get a #78 drill bit, these are exactly to right size to clean the pilot jets - use carefully to avoid reaming the jets

 

[Rudie]

I live in West Cornwall and would like to know if anyone knows of a carb specialist in my area that really know his stuff.

The nearest one I know of that might be able to help is Monty's Classic Motorcycles but he's at the other end of Cornwall.