it hesitates..annoying as hell

[P4L08]

Hi All

Haven't been here fore a while as I was ill last year and didn't get to ride the Z until the end of the summer.

It has an 1105 kit, gas flowed head and 28mm carbs with a Harris pipe. It runs pretty nicely now with 130 mains although can't remember what pilots are in there 22.5's maybe. Dyna ignitiona and standard airbox.

Anyhow symptoms:

1. little flat spot just off idle makes it a pain in traffic.
2. When riding at constant speed it'll hesitate then pull, hesitate then pull almost like I am opening and closing the throttle.

On a ride up the back roads you don't notice it because you are up and down the box and not running a constant throttle.

Any ideas. I thought maybe jet up to 135's and bigger pilots. Or could it be the advance retard mechanism

thanks

Dale

[skoda]

sounds like fuel starvation to me check fuel flow from the petcock tank fillter may be blocked

[Rich]

fuel heights
small pilot feed hole into venturi engine side of the slide - make sure it's clear.
synchronise

I also expect the mains you have in are too big. Put your pilots back to std and play with the airscrew for highest tickover, then try 120 main jets.