The three waveforms below are taken from the #1 and #4
injectors. The top waveform is from the high side (feed side) of the #1
and #4 injectors, while the middle waveform is from the low side (ground
side) of the #1 injector and the bottom waveform is from the low side
of the #4 injector.
The middle waveform is the same as the top waveform because
there is no ground for the circuit. With no current flowing in the
circuit, the #1 injector is not energized and fuel does not flow.
The bottom waveform shows that ground is supplied and there
is a voltage drop across the #4 injector. With current flowing in the
circuit, the #4 injector is energized and fuel flows.
Injured person
A seat belt should be used when an injured person is being transported. When
this is necessary, you should consult a physician for recommendations. ...
Checking the coolant level
WARNING - Removing radiator cap
Never attempt to remove the radiator cap while the engine is operating or
hot. Doing so might lead to cooling system and engine damage.
Also, hot coolant or s ...