i thought i found the problem but i was wrong it is still running realy bad i have replaced the points, plugs, leads, dizzy cap, rotor button, condensor,

coil, i have checked the float levels i cleaned out the carbs i have adjusted the valve clearance but yet it is still missing realy bad. It still runs better if you give it a long spark. It is runing extreamly rich. i have used quater of a tank of fuel just siting in my drive way i am thinking it may be a vacume leak but dont know how to find it. i have tryed spraying areo start around all the gaskets but there is no change so i give up i am takeing it to the mechanic on monday

i got it back from the mechanic today

he droped the needles a bit so it would not run so rich at idle

but it now runs lean at higher revs.

I was wondering if the 240z su' are to small for the l28 motor?

if so would a neadle change fix that?

Zs that currently hold hillclimb records here locally running ZTherapy standard production carbs..... Nothing oversize about them.