Firing timing

Setting fireing timing on otto-cycled motor is difficult reqireing experiences and keen sensitivity. Timing is advanced according to vacum pressure, motor's RPM and the speed of vehicle. Very precise rotating adjustment on distributor is necessary, deciding best position, actual running test driving in diferrent burdening are tried on several gear position.

The residual fuel amount affect the throttle response not a little. Hill climbing driving test may be the way. But computer fireing timing fully controlled vehicle is not capable to adjust basically, this is why recent sophisticated vehicle is not so interesting.

Direct cylindorical injection system needs strange piston top shape compareing with conventional motors, it's a relatively high wall for me to ride over.