hey all i need some urgent help
i have just completed a b18c7 conversion in to my ek4 civic
i have replaced timing belt,water pump,new clutch,plugs,leads
i have a problem with idling problem, the engine is running very rich
when im driving it would run great untill i let got of the accelerator then it would stall
if i rev the engine then let go it would stall
i have tried another ecu and it would do the same problem
all vaccum hoses are not leaking
i have done a comp test ( 250 250 240 250 )
there are no codes coming up

im hoping if some 1 has ran in to the same problem for some advice
any help would be great

thanks