Engine won't start
- Loose or corroded battery connections (Section 5)
- Discharged or defective battery (Section 5)
- Faulty, loose or open wiring in the starter circuit (Section 5)
- Faulty traction relay or starter switch (Section 5)
- Faulty starter (Section 5)
- Starter gear and flywheel teeth are loose or broken (Sections 2 and 5)
- Motor ground damaged or disconnected (Section 5)
Engine turns over but won't start
- Fuel tank empty
- Battery low (motor rotates slowly) (Section 5)
- Loose or corroded battery connections (Section 5)
- Wet or damaged ignition system components (Sections 1 and 5)
- Faulty, loose or open wiring in the ignition circuit (Sections 1 and 5)
- Worn, defective, or incorrectly gapped spark plugs (Section 1)
- Choke mechanism incorrectly adjusted, worn or sticking (Section 4)
- Major mechanical failure (e.g. camshaft drive) (Section 2)
Engine difficult to start from cold
- Battery low (Section 5)
- Loose or corroded battery connections (Section 5)
- Worn, defective, or incorrectly gapped spark plugs (Section 1)
- Choke mechanism incorrectly adjusted, worn or sticking (Section 4)
- Other damage to the ignition system (Sections 1 and 5)
- Low compression in the engine cylinders (Section 1)
The engine is difficult to start when it is hot
- Air filter element dirty or clogged (Section 1)
- Choke mechanism incorrectly adjusted, worn or sticking (Section 4)
- Carburetor float chamber full (Section 4)
- Low compression in the engine cylinders (Section 1)
Starter makes noise
- Starter gear and flywheel teeth are loose or broken (Sections 2 and 5)
- Starter mounting bolts are loose or missing (Section 5)
- Internal starter components worn or damaged (Section 5)
Engine starts but immediately stalls
- Not enough fuel getting into the carburetor (Section 4)
- Ignition circuit connectors loose or defective (Sections 1 and 5)
- Vacuum leak in carburetor body or intake manifold (Section 4)
- Clogged jets or internal channels of the carburetor (Section 4)
Unstable operation in idle mode
- Idle speed and/or mixture ratio incorrectly adjusted (Section 1)
- Clogged air filter element (Section 1)
- Vacuum leak in carburetor body, intake manifold or related hoses (Section 4)
- Worn, defective, or incorrectly gapped spark plugs (Section 1)
- Unequal or low compression in the engine cylinders (Section 1)
- Worn camshaft cams (Section 2)
- Drive belt tensioned incorrectly (Section 2)
Misfiring at idle
- Worn, defective, or incorrectly gapped spark plugs (Section 1)
- Faulty high voltage spark plug wiring (Section 1)
- Idle mixture set incorrectly (Section 1)
- Ignition timing incorrectly adjusted (Section 1)
- Vacuum leak in carburetor body, intake manifold or related hoses (Section 4)
- Distributor cap cracked (Section 5)
- Unequal or low compression in the engine cylinders (Section 1)
- Disconnected or damaged crankcase ventilation hoses (Sections 1 and 4)
Misfiring throughout the entire speed range
- Clogged jets or internal channels of the carburetor (Section 4)
- Carburetor worn or incorrectly adjusted (Sections 1 and 4)
- Clogged fuel filter (Section 1)
- Fuel pump defective or supply pressure low (Section 4)
- Clogged fuel tank opening or fuel lines (Section 4)
- Vacuum leak in carburetor body, intake manifold or related hoses (Section 4)
- Worn, defective, or incorrectly gapped spark plugs (Section 1)
- Faulty spark plug wires (Section 1)
- Distributor cap cracked (Section 1).
- Faulty ignition coil (Section 5)
- Unequal or low compression in the engine cylinders (Section 1)
Engine accelerates with a delay
- Worn, defective, or incorrectly gapped spark plugs (Section 1)
- Carburetor accelerator pump defective (Section 4)
- Clogged jets or internal channels of the carburetor (Section 4)
- Vacuum leak in carburetor body, intake manifold or related hoses (Section 4)
- Carburetor worn or incorrectly adjusted (Sections 1 and 4)
Engine stalls
- Idle speed and/or mixture ratio incorrectly adjusted (Section 1)
- Clogged jets or internal channels of the carburetor (Section 4)
- Vacuum leak in carburetor body, intake manifold or related hoses (Section 4)
- Clogged fuel filter (Section 1)
- Fuel pump defective or supply pressure low (Section 4)
- Clogged fuel tank opening or fuel lines (Section 4)
Insufficient engine power
- Ignition timing incorrectly adjusted (Section 1)
- Carburetor worn or incorrectly adjusted (Section 1)
- Drive belt installed or tensioned incorrectly (Section 2)
- Clogged fuel filter (Section 1)
- Fuel pump defective or supply pressure low (Section 4)
- Unequal or low compression in the engine cylinders (Section 1)
- Worn, defective, or incorrectly gapped spark plugs (Section 1)
- Vacuum leak in carburetor body, intake manifold or related hoses (Section 4)
- Wheel braking (Sections 1 and 9)
- Clutch slip (Section 8)
The oil pressure warning light comes on when the engine is running
- Low oil level or wrong type of oil filled (Section 1)
- Faulty oil pressure sensor (Section 12)
- Worn engine bearings and/or oil pump (Section 2)
- High engine operating temperature (Section 3)
- Defective oil pressure relief valve (Section 2)
- Clogged oil pump intake strainer (Section 2)
Engine continues to run after shutdown
- Too high idle speed (Section 1)
- Faulty fuel cut-off valve (Section 4)
- Excessive soot in the engine (Section 2)
- High engine operating temperature (Section 3)
Noises in the engine
Detonation or knocking during acceleration or when the vehicle is under load
- Wrong ignition timing (Section 1)
- Filled with the wrong type of fuel (Section 4)
- Vacuum leak in carburetor body, intake manifold or related hoses (Section 4)
- Excessive soot in the engine (Section 2)
- Worn or damaged distributor or other components of the ignition system (Section 5)
- Carburetor worn or incorrectly adjusted (Section 1)
Whistling or wheezing sounds
- Leaking intake manifold or carburetor gasket (Section 4)
- Leaking exhaust manifold gasket or exhaust pipe-to-manifold connection (Section 1)
- Vacuum hose lets air through (Sections 4 and 9)
- Blown cylinder head gasket (Section 2)
Light tapping or rattling
- Hydraulic pushers are faulty (Section 2)
- Worn valve train or camshaft (Section 2)
- Toothed drive belt or belt tensioner worn out (Section 2)
- Auxiliary components damaged (water pump, generator, etc) (Sections 3 and 5)
Loud or dull thud
- Worn connecting rod bearings (regular loud knocking, possibly decreasing when the car is loaded) (Section 2)
- Worn main bearings (loud knocking, possibly worse when the car is loaded) (Section 2)
- Piston damaged (most noticeable when the engine is cold) (Section 2)
- Auxiliary components damaged (water pump, generator, etc) (Sections 3 and 5)