I have just started my Zetec 2.0L, however there appears to be blow back through the carbs what would cause this?
Timing issue?

If you mean spitting they all seam to do this
Mine do

Have you blocked the upper air hoses?

Give me a shout and I'll come down and see if I can help.

Steve

mine occasionaly seem to puff a fine mist of fuel. zx9 carbs aswell on a pinto

mist from mine as well

And mine.

Andy

When i mean blow back, i understand that the mist is normal, it was like a misfire through the carb, i could see like a flame on each carb, it happens just sometimes not constantly, is this normal?, cheers steve i might take you up on that offer, really im just needing advice on getting the carbs set up, jet sizes etc,
i have not blocked the top air pipes and not blocked the air bleeds yet, 190 mains, any advice is appreciated

cam timing will give you blow back through the carbs that would do it all the time though.

Does it rev ok? Are the diaphragms sealed ok?

Yeh it revs up ok. just a bit lumpy low down however if i put the choke on everything smooths out, i aint blocked anything off at all

my zx6 carbs used to chuff until they were setup properly. they never do it now.

May need balancing, I can bring my gauges as long as you have vacuum take offs?