Bike starts up but occasionally spits back out of the carborettors.

Can anyone help?

Many thanks in advane

Thank you

Just fitted a Harris Exhaust. K and N air filters, how much should I jet the carbs up to?

Thank you everyone, I will carry on and check w eh by what you have suggested

Z9 A4

Carbs keep leaking out of the Overflow pipes and occasionally out of the back of the carbs.
I've tried float heights, float valves and nothing will stop it. Stops for an hour or so but then starts again.
Can anyone guide me in the right direction please?

Thank you will try your suggestions

Hi, z9 A4, carburetors continuously weeping out of the overflows on the float bowls.
Any ideas for diagnostics would be very helpful please.

Cheers

Thanks ever so much, most helpful

I’ve put a 4into1 exhaust and running k and n air filters, do I need the air corrector jet kit and what size should the main jet be?

Thanks ever so much

Just had cylinder head skimmed by 5 thou of an inch, will the valves hit the pistons, if so, how could I remedy it? Any advice helpful

Cheers, thank you

Hi, new to this forum, I am restoring a z9 A4, think the head might be warped, what is the max that can be skimmed off it.

Thanks in advance