[Eddyvdw]

Guys,

My winter project comes to an end (pulled engine, cleaned the lot, repaired leaks, set valves, cleaned throttle valves, new injectors, plugs, pertronix, etc etc) it's time to hit the road again.

One issue, can't get the idle right while following CMA to the letter. So revving, 3000rpm synchronization, timing at 1000 rpm all no problem). Still the idle is far too low (no matter what I do to the bypass screws) and far too lean. My Dayton AFR meter shows at idle somewhere between 18,5-19,5 AFR. I know this is far to lean. Before pulling my engine it was somewhere in the low 12...

I haven't touched the MFI pump yet (calibrated by Mark Jung). At 1000rpm (bit of hand throttle) the engine makes a popping noise at the intakes. Revving from that point generates nice flames at the air intakes :-( AFR at 2000 RPM is fine.

Do I have to adjust the richness with the MFI pump because I have new injectors?
Any suggestions how to proceed?

THANKS,
Ed