SU HS Carburettors

We are SU carburettor tuning & balancing specialists , we offer a UK nationwide mobile SU carburettor tuning service. We have over 43 years SU carburettor tuning experience and have specialist carburettor tuning equipment that can achieve first class results for our customers. 

SU carburettors have a variable venturi, this type of carburettor has a piston and variable sized needle which moves up and down every time the accelerator is operated. The needles and jets wear over time and performance economy and reliability are all affected, tuning and balancing of the SU carburettor is essential as well as diagnosing when it is time to replace worn components.

Worn needles on SU carburettors will cause the spark plugs to fowl up with soot leading to high emissions. Other symptoms will be lack of power and possible misfiring. Worn SU needles will ultimately lead to poor MPG.

Diagnosing worn SU carburettor needles & Jets can be tested accurately using a high specification five gas analyser in combination with the Crypton CMT 2000 tuning equipment.