Sorry if this has been covered before.

Bike is GSXR 400 GK76a 1990 .(not SP)

Had major issues with over fuelling causing the bike to cut out when hot. This has been sorted ( O rings ) bike now runs not too bad.

Checked the carbs with a vacuum gauge and 3 of the cylinders look like they are running pretty much balanced but one is out.

Find acceleration a bit fluffy and bike hesitates before pulling. Also bike chucks out a lot of crap for a second when I push it hard could this be unburnt fuel due to balance issue ?

Have had a look to see if I can adjust carbs but can see how ?????

Also where are the mixture screws ?

Anyone help with a step by step guide (with pictures if possible)

Thanks for you help in advance. Really want this bike running well as top fun

hi there have you tried tony steep the great carburettor saga was a great help to me and alot of others.