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+--- Thread: SU carburettor (/showthread.php?tid=6555)
SU carburettor - David.H - 26-08-2021
I have just acquired a new factory rebuilt old stock downdraft SU. Probably been on the shelf for 40 years! Any advice on recommissioning it?
Obviously clean the dust out & oil it & check the needle number, but anything else?
RE: SU carburettor - Ian McGowan - 26-08-2021
check that the piston falls freely within the dashpot and that the butterfly opens and closed fully.
RE: SU carburettor - Terrytuned - 26-08-2021
David the piston spring in a D type SU carb is stronger it should be a yellow spring AUC 1167 they often have the wrong spring fitted. Terry.
RE: SU carburettor - dickie65 - 26-08-2021
I took my D2 off as I had a missfire on hard cornering ( usually half way round a roundaboat ) cured with a semi downdraft SU.
This was a fully reconditioned one with the float chamber to the front of the car.
I agree the spring needs to be changed for an Austin 7.