DR ALL-TERRAIN Wartungshandbuch PDF herunterladen (Seite 98)

100

101

3-34 FUEL SYSTEM (DFI)

DFI System Troubleshooting Guide

Symptoms or Possible Causes Actions (chapter)

Piston ring bad (worn, weak, broken or sticking) Inspect and replace (see chapter 5).

Piston ring/groove clearance excessive Inspect and replace (see chapter 5).

Cylinder head gasket damaged Replace (see chapter 5) .

Cylinder head warped Inspect and replace (see chapter 5).

Valvespringbrokenorweak Inspect and replace (see chapter 5).

Valve not seating properly (valve bent , worn or

carbon accumulating on the seating surface)

Inspect and repair or replace (see chapter 5).

Knocking:

Carbon built up in combustion chamber Repair (see chapter 5).

Fuel poor quality or incorrect (Use the gasoline

recommended in the Owner’s Manual)

Change fuel (see chapter 3).

Spark plug incorrect Replace it with the correct plug (see chapter 16).

Ignition coil trouble Inspect (see chapter 16).

IC igniter in ECU trouble Inspect (see chapter 16).

Inlet air temperature sensor trouble Inspect (see chapter 3).

Miscellaneous:

Throttle valve won’t fully open Inspect throttle cable and lever linkage (see

chapter 3).

Brake dragging Inspect caliper fluid seal damage or clogging

of master cylinder relief and supply ports (see

chapter 12).

Engine overheating - Water temperature sensor

or crankshaft sensor trouble

(see Overheating of Troubleshooting Guide in

chapter 17).

Engine oil level too high Repair (see chapter 7).

Engine oil viscosity too high

Change (see chapter 2).

Camshaft cam worn Inspect and replace (see chapter 5).

Exhaust Smokes Excessively:

(White smokes)

Piston oil ring worn Inspect and replace (see chapter 5).

Cylinder worn Inspect and replace (see chapter 5).

Valve oil seal damaged

Replace (see chapter 5).

Valve guid

eworn

Replace the guide (see chapter 5).

Engine oil level too high Repair (see chapter 7).

(Black smoke)

Air cleaner clogged Clean (see chapter 3).

Toohighfuelpressure Inspect (see chapter 3).

Injector stuck open

Inspect (see chapter 3).

Water te

mperature sensor trouble

Inspect and replace (see chapter 3).

Inlet air temperature sensor trouble Inspect and replace (see chapter 3).

(Brown smoke)

Air cleaner duct loose Reinstall (see chapter 3).

Air c leaner O-ring damaged Replace (see chapter 3).

Too low fuel pressure Inspect fuel line and fuel pump (see c hapter 3).

Water t

emperature sensor trouble

Inspect and replace (see chapter 3).

Inlet air temperature sensor trouble Inspect and replace (see chapter 3).

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