Generac Power Systems 53187 User Manual
Page 97
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SECTION 4.1- INTRODUCTION TO
THE DIESEL FUEL SYSTEM
1
PART 4
ENGINE FUEL SYSTEM
Fuel System Components (Continued)
□
The FUEL INJECTOR PUMP must be properly
timed, to deliver the required amount of fuel to each
cylinder at the precise moment the fuel is needed.
Firing order of engine cylinders is 1-2-3. Fuel injec
tion occurs at 20’-21' BTDC.
□ Injectors pressure is approximately 1707 psi (11,769
kPa).
□ Rated lift of the electric fuel pump is approximately 9
to 10 feet (200 mm of Hg).
□ Excess fuel is returned to the fuel tank, via one or
more return lines.
PAGE 4.1-2
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