So essentially I would need to know the VE injector pump’s plunger stroke at top dead center for the Toyota 2L-II engine with an Automatic Cold Start Device(ACSD)?
And if I could bother with a rather more elaborate question for clarity.
I’ve only been able to find information on various other L engines and the plunger stroke can vary quite dramatically. I’ve currently had timed it for 0.84mm@TDC(Shoots up to about 1.15mm when the ACSD engages) as this was within the margins for both the 2L(with ACSD) and the 3L according to their respective repair manuals.
However, one source that claims to be for the 2L-II had the plunger stroke as far retarded as between .44mm – .56mm with the ACSD but as high as 0.84mm – 0.96mm without the ACSD.
So my clarifying question would be; How come the ACSD is engaged it seems to time the pump for Hot running in an engine without one?
It appears you have already answered your first question.
Plunger Stroke
- With ACSD: 0.44-0.56 mm (0.0173-0.0220 in.)
- Without ACSD: 0.84-0.96 mm (0.0331-0.0378 in.)
Lastly your second question might be better answered by an engineer at Toyota.
Toyota 2L-II Engine
The 2L-II is an upgrade of the 2L. The cylinder bore and the piston stroke remains the same. The most significant change is that the camshaft lifts the valve directly via tappet instead of a rocker arm. The valve clearance is adjusted using shims.
The Toyota 2L produced from 76 PS (56 kW; 75 HP) at 4,000 rpm to 90 PS (66 kW; 88 HP) at 4,200 rpm of maximum horsepower and from 155 N·m (15.8 kg·m, 114.2 ft·lb) at 2,400 rpm to 165 N·m (16.8 kg·m, 121.6 ft·lb) at 2,400 rpm of maximum torque.
Source: https://www.engine-specs.net/toyota/2l.html