Hello,
I joined this forum because i seen many of you have success in using dellorto carbs and i have some problems with my setup which i cannot figgure out. Engine is a 1394cc with rmp range up to 6000, i use a single dellorto 40H with jettings i think factory from a giulietta :
58 idle
130 main
180 air corr
7772.11 emulsion tube
The troubles which i'm having are: hard starting and lumpy idle (progression phase seems ok) and i assume after progression (i have no rpm counter) if i accelerate hard (more or less) the engine makes a low noise and instead of accelerating it even slows then suddenly it "wakes up" and accelerate quite well.(the hole in acceleration phase is quite big i have to press clutch to rev it up faster then let it go...)
I've tried to mod the advance, changed the sparkplugs, plug wires, opened more the idle mixture screw...nothing.
Any ideeas please? (excuse my english, it's not my native language)