- Battery terminals loose or corroded ("Weekly checks").
- Discharged or defective battery (Section 4A).
- Broken or disconnected wiring in the starter circuit (Section 4A).
- Defective starter relay or switch (Section 4A).
- Defective starter (Section 4A).
- Defective starter gear or flywheel teeth (Section 1).
- Engine ground strap broken or disconnected (Section 4A).
Engine cranks but won't start
- The fuel tank is empty.
- Low battery (motor rotates slowly) (Section 4A).
- Battery terminals are loose or corroded.
- Defective preheating system - diesel models (Section 4B).
- Fuel cut-off valve not working - diesel models (Section FOR).
- Air in the Fuel System - Diesel Models (Section 3A).
- Serious mechanical failure (e.g. camshaft drive)
Difficulty starting a cold engine
- Dead battery (Section 4A).
- Battery terminals open or corroded
- Defective preheating system - diesel models
- High idle valve not properly adjusted - diesel models.
- Low compression in the engine cylinders (Section 1).
Excessive noise in the starter when turned on
- Broken starter gears or flywheel teeth (Sections 1 And 4A).
- Loose or missing starter mounting bolts (Section 4A).
- Worn or damaged internal starter components (Section 4A).
Erratic engine idle
- Clogged air filter element.
- Unequal or low compression in the engine cylinders (Section 1).
- Worn camshaft cams (Section 1).
- Incorrect drive belt tension.
- Defective Injector - Diesel Models (Section FOR).
Ignition misfires at idle
- Defective Injector - Diesel Models (Section FOR).
- Different or low compression in the engine cylinders (Section 1).
- Disconnected, leaking or kinked crankcase ventilation hoses (Section ZV).
Misfiring at all engine speeds
- Fuel filter clogged.
- Defective Injector - Diesel Models (Section FOR).
- Unequal or low compression in the engine cylinders (Section 1).
- Fuel system damage (Section FOR).
Engine shakes when accelerating
- Defective Injector - Diesel Models (Section FOR).
Engine stalls
- Fuel filter clogged.
- Defective Injector - Diesel Models (Section FOR).
The engine does not develop power
- Wrong timing belt tension (Section 1).
- Fuel filter clogged.
- Unequal or low compression in the engine cylinders (Section 1).
- Fuel system damage (Section FOR).
- Defective Injector - Diesel Models (Section FOR).
- Faulty Fuel Pump - Diesel Models (Section FOR).
- Sticking brakes (Section 9).
- Clutch slip (Section 5).
The oil pressure warning lamp is on
- Low oil level or wrong grade of oil ("Weekly checks").
- Defective oil pressure sensor (Section 4A).
- Worn engine bearings and - or oil pump (Section 1).
- High engine operating temperature (Section 2).
- Defective oil pump bypass valve (Section 1).
- Clogged strainer in oil pickup tube (Section 1).
Engine continues to run after shutdown
- Excessive increase in carbon content in the engine (Section 1).
- High engine operating temperature (Section 2).
- Faulty fuel cut-off valve on the pump - diesel models (Section FOR).
Whistling or wheezing noises in the engine
- Leakage through the exhaust manifold gasket or exhaust pipe coupling
- Broken cylinder head gasket (Section 1).
Fluid leakage and rattling noises
- Worn valve train or camshaft (Section 1).
- Damage to auxiliary components (water pump, generator, etc.)
Detonation or dull noises
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