2012 MotorVac, Inc.
9
Service Procedure
Fuel System Types
Before beginning an exchange determine if the vehicle being serviced has a return or
returnless fuel system.
Return Systems
A return system has 2 fuel lines, one from the fuel tank to the fuel rail and one returning
to the fuel tank. A regulator maintains the correct fuel rail pressure by returning any
excess fuel back to the tank.
NOTE: The fuel pump must be disabled for return fuel systems as dead heading
the pump can cause damage to the pump or fuel system.
Summary of Contents for CarbonClean 1000
Page 1: ...2012 MotorVac Inc ZIM11 00474 Rev 0 CarbonClean1000...
Page 2: ......
