Jaffa J,

Below is an image of the Ultima carby. I want to know if you replaced item # 37 on both the main jet and base of the carby. If you have not changed the one in the bowl then that is what might be your problem. From memory they did have some issues with the main jet but would have to look for notes that I might have on it.
[Linked Image]


Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.