FUEL SYSTEM (EFI) 3-27
Symptoms or Possible Causes Actions (chapter)
Throttle body assy O-ring damaged Replace (see chapter 3).
Fuel tank air vent obstructed Inspect and repair (see chapter 3).
Fuel line clogged Inspect and repair (see chapter 3).
Fuel pump operates intermittently and often EFI
fuse blows.
Pump bearings may wear. Replace the pump
(see chapter 3).
Fuel pump trouble Inspect (see chapter 3).
Inlet air temperature sensor trouble Inspect (see chapter 3).
Main throttle sensor trouble Inspect (see chapter 3).
Inlet air pressure sensor trouble Inspect (see chapter 3).
Cracked or obstructed inlet air pressure sensor
hose
Inspect and repair or replace (see chapter 3).
Injector clogged Visually inspect and replace (see chapter 3).
Compression low:
Spark plug loose Reinstall (see chapter 16).
Cylinder head not sufciently tightened down Tighten (see chapter 5).
No valve clearance Adjust (see chapter 2).
Cylinder, piston worn Inspect and replace (see chapter 5).
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).
Valve spring broken or weak 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).
Stick 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 valves won’t fully open Inspect throttle cable and lever linkage (see chapter 3).
Brake dragging Inspect caliper uid seal damage or clogging of master
cylinder relief and supply ports (see chapter 12).
Clutch slipping Inspect friction plates for wear (see chapter 6).
Engine overheating - Water temperature sensor,
crankshaft sensor or speed 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).
To Next Page
Loading...