[priobe]

Hello All,

I have been trying to tune my weber carbs and been using a Inovative LM1 anaylzer. I am noticing around 2000 - 3000 RPM my A/F mixture is shoots to 22 which is lean and I get a detonating ticking sound / backfire (which sould like it is not firing on all cylinders)

I have check / changed

rotor
cap
plugs
wires
firing order
ground / added extra ground
adjust valves

adjust carbs to run rich

and on the LM 1 everything looks good but at 2000 -2200 - 3000 all hell breaks loose.

I am stumped.

Can someone please advise?