Okay, help with my motor, was: "carb dial in help? (webber IDF 44)" Options

[VaccaRabite]

*edit* Note, cylinder bank 3/4 is not firing. Plugs are oil fouled. All four cylinders have decent compression, considering that the rings probably are not set yet. Carbs are fresh rebuilt, I have yet to check spark.*/edit*

I have set my idle at 1K rpm.
Idle adjustment screws for the 3/4 bank is almost all the way out.
Idle adjustment screw for 1/2 bank several turns in.

Both carbs are idling at 5 kg/h according to my flow meter.

Mix screws for all 4 carbs are 2.5 turns open.

When I open the throttle to ~3K rpm, the 3/4 bank only sucks slightly more air. The 1/2 bank jumps up to about 15 kg/h.

So, where am I off.

I have my weber tech manual too, but thought I would ask here to see if I got a faster "ah-ha" type answer (like usual).

[Al Meredith]

I had a lot of trouble with #3 oiling up and not having any adjustability at idle. It was the "choke " circuit. I have never seen this on a weber before so I never noticed that on this set of 40MMs there were sliding brass valves under the plate on the side, usually just a plate over a blank space. This set of carbs ( made in Spain) had sliding valves with springs on top to hold them down. The problem was that the springs are supposed to have "keepers" to keep the springs down and therefore close pressure on the valves. These keepers were missing and the springs were only held down by the paper casket that , after it soffened a little allowed one of the springs to work up therefore allowing one cylinder to run rich at idle.

2) when the engine is idiling put your hand over one carb then the other. If the engine speeds up when you close the top then the shaft seals are bad and you are sucking air through the shafts and not through the top as intended.