Injection Nozzle Inspection; Bubble Test For Radiator - Ezgo 1600xd Repair Manual

5.5 INJECTION NOZZLE INSPECTION

CAUTION
• Never come in contact with spraying diesel fuel
under pressure, which can have suffi cient force
to penetrate the skin, causing serious personal
injury.
• Be sure no one is in direction of the spray.
A. FUEL INJECTION PRESSURE
1. Set the injection nozzle to the nozzle tester.
2. Measure the injection pressure.
3. If the measurements are not within the specified
range, replace the injection nozzle.
Specifi ed fuel injection
pressure .......................... 13.73 ~ 14.71 MPa
B. FUEL TIGHTNESS OF NEEDLE VALVE SEAT
1. Set the injection nozzle to the nozzle tester.
2. Apply 130 kgf/cm² (12.74 MPa, 1,849 psi) of pres-
sure consistently for 10 seconds and check if the
fuel is leaked from the nozzle.
3. If the fuel is leaked, replace the nozzle.
SUUV-W00 Apr. 2011
ENGINE - INSPECTION AND ADJUSTMENT
S76W255A
140 ~ 150 kgf/cm²
1,991 ~ 2,133 psi
S76W256A

5.6 BUBBLE TEST FOR RADIATOR

REMARK
Check if water is leaked through crack on the
cylinder wall.
1. Check the coolant level of the radiator and the res-
ervoir tank. Add the coolant if necessary.
2. Start the engine with the radiator cap closed and
the reservoir tank cap open.
3. Check if any bubble can be seen in the overflow
hose on the bottom of the reservoir tank around 5
minutes later.
4. If any bubble keep coming, remove the engine cyl-
inder head to check the head gasket for damage,
the cylinder bore for crack and the cylinder head for
crack. Replace the components if necessary.
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