Hey guys just wondering what could be causing my 79 ke55 to shut off under moderate braking. We also don't seem to be getting full throttle with the vacuum secondary not seeming to open up. What do you guys think. I'm puzzled as to why its doing both of these things. Just would like to see what others think of it.

Cheers 79rolla 

Edited April 7Apr 7 by 79rolla

Float level? 

Have you checked the diaphragm?

Back in the day we would switch the spring to the other side of the diaphagm so the secondary was always open.

Ok i might try that now. I have gotten it to open a bit just don't know how far it will open at this point as I just swapped vacuum lines around. But I might try it.

 

Cheers 79rolla 

The stalling under braking sounds like a separate issue, probably the dashpot or idle-up solenoid not holding the throttle open enough when you lift off. Worth checking it holds vacuum with the key on before blaming the carb itself.