Valve Trouble Service

Problem
Valve is sticking.
Cause
There are deposits on valve stem. Worn valve guide. Warped valve stem. There is insufficient oil. The valves are overheating.
Solution
Clean or remove the deposits. Replace the valve. Check the oil, service the lubricating system.

Problem

Valve burning.

Cause

Valve is sticking. The valve seat id distorted. The valve tappet clearance is too small. Spring cocked or weak. The engine is overheated. Lean air fuel mixture. Pre ignition problem. Detonation problem. The valve seat has leakage. Loose valve guide.

Solution

Check cooling system and tighten the cylinder head bolts.  Adjust the valve tappet clearance. Replace spring. Check cooling system. Service fuel system. Clean carbon from engine and use cooler plugs. Adjust the ignition timing and use higher octane fuel. Relap valve face and seat. Replace valve guide.

Problem

Valve breakage.

Cause

The valve is burning. Detonation problem. Excessive valve tappet clearance. The valve is sticking. There are scratches on valve stem.

Solution

Adjust the ignition timing and use higher octane fuel. Adjust valve tappet clearance. Replace valve.

Problem

Valve face wear.

Cause

Excessive valve tappet clearance. Dirt on face valve.

Solution

Adjust the valve tappet clearance. Clean and check air cleaner.

Problem

Valve deposits.

Cause

There is carbon from rich mixture. The valve guides are worn. There is carbon from poor combustion. Used of dirty and wrong oil. 

Solution

Service fuel system. Replace worn valve guides. Service fuel system, ignition or service engine. Replace oil.

Charging System Service

Problem

Battery does not stay charged but engine starts okey.

Cause

Battery is defective. Loose or worn alternator belt. Damaged or worn wiring cables. The alternators are defective. The regulators are defective. There are other electrical system malfunction.

Solution

Test the battery or replace the battery if necessary. Adjust or replace the alternator belt. Test and replace components as required. Test or replace regulator if necessary. Check other system for current draw.

Problem
Alternator is noisy.

Cause
Loose or worn  alternator belt. Bent pulley flanges. The alternator is defective. Loose alternator mounting.

Solution

Adjust belt tension or replace if worn. Replace the pulley. Service or replace the alternator. Tighten the alternator mounting.

Problem
Lights or fuses out frequently.

Cause
Wiring is worn or damaged. The alternator or regulator is defective. The battery is defective.

Solution

Service is required. Test, service and replace alternator or regulator if necessary. 

Problem
Charge indicator lights flicker after engine starts or comes on  while driving.

Cause
Loose or worn alternator belt. The alternator is defective. Field circuit ground is defective. The regulator is defective. The light circuit wiring or connector is defective.

Solution

Adjust tension or replace the alternator belt. Service or replace the alternator. Service or replace wiring or connection of field circuit. Test or replace regulator if necessary. Repair light circuit wiring or connector as required.

Problem
Charge indicator light flickers while driving.

Cause
Loose or worn alternator belt. Loose or improper wiring connections. Alternator is defective. Regulator is defective.

Solution

Adjust tension or replace alternator belt. Service wiring connections as required. Service or replace alternator. Test or replace regulator if necessary.

Problem
Charge indicator gauge or meter shows discharge.

Cause
Loose or worn alternator belt. Damaged or worn wiring or battery to alternator for ground or open. Field circuit ground is defective. The alternator is defective, The regulator is defective. Gauge or meter wiring or connections is defective. Damaged or worn gauge or meter. Other electrical system malfunction.

Solution
Adjust tension or replace alternator belt. Replace or repair wiring.  Service or repair the alternator. Test and replace regulator if necessary. Service gauge or meter wiring as required. Replace worn gauge or meter. Service electrical system as required.

Starting System Service

Problem

No cranking and lights stay bright.

Cause

There is an open circuit in ignition switch. Open switch in starting motor. Open circuit in control circuit. Open fusible links.

Solution

Check switch contacts and connections. Check commutator, brushes and connections. Check solenoid, relay, switch and connections. Correct condition causing link to blow and replace link.

Problem

No cranking and lights dim heavily.

Cause

There is trouble in engine. The battery is low. Temperature is very low. Frozen armature bearings and short in starting motor.

Solution

Check engine to find the trouble. Check, recharge or change battery. Battery must fully charged with engine wiring circuit and starting motor in good condition. Repair starting motor.

Problem

No cranking and lights dim slightly.

Cause

Faulty or slipping drive. Excessive resistance or open circuit.

Solution

Replace parts of drive. Clean commutator, replace brushes, repair poor connections.

Problem

No cranking and lights go out.

Cause

Poor connection probably at battery.

Solution

Clean cable clamp and terminal and tighten clamp.

Problem

No cranking and no lights.

Cause

The battery is dead. Open circuit.

Solution

Recharge or replace the battery. Clean and tighten connections and replace wirings.

Problem

Engine cranks slowly but does not start.

Cause

The battery run down. The temperature is very low. Starting motor is defective. Undersized battery cables or battery. Mechanical trouble in engine.

Solution

Check, recharge or replace the battery. Battery must be fully charged. Engine, wiring circuit and starting motor must be in good condition. Test starting motor. Install cables or battery of adequate size and check engine.

Problem

Engine cranks at normal speed but does not start.

Cause

The ignition system is defection. The fuel system is defective. Air leaks in intake manifold or carburetor. The engine is defective.

Solution

Make spark test, check timing and check ignition system. Check fuel pump, line, carburetor or fuel injection system. Tighten mounting and replace gasket as needed. Check compression and valve timing.

Problem

Relay or solenoid chatters.

Cause

Hold in winding open. The battery is low. The contacts are burned.

Solution

Replace the solenoid. Charge the battery. Replace the burned contacts.

Problem

Pinion disengages slowly after starting.

Cause

Sticky solenoid plunger. Overrunning clutch sticks on armature shaft. Overrunning clutch defective. Shift lever return spring weak.

Solution

Clean and free the plunger. Clean armature shaft and clutch sleeve. Replace the clutch. Install a new spring.

Problem

Unusual noise.

Cause

High pitched whine during cranking before the engines fire. High pitched whine after engine fires as key is released. Loup whoop, buzzing or siren sound after engine fires but while starter engaged. Sounds like siren if engine is rewed. Rumble, growl or knock as starter is coating to a stop after engine starts.

Solution

There is too much clearance between pinion and ring gear. There is little clearance between pinion and ring gear. Defective overrunning clutch. Bent or unbalanced armature.

Cooling System Service

Problem

Leak and loss of coolant.

Cause

Pressure cap and gasket defective. External leakage. Internal leakage.

Solution

Inspect, wash and pressure test pressure cap. Replace cap if it will not hold pressure.  Test pressure system. Inspect connections, gasket, plugs, pumps and hose. Check bolt torque. Disassemble engine if necessary and inspect head gasket and crack head block.

Problem

Engine overheats.

Cause

Low coolant. Loose belt. Pressure cap defective. Radiator or air conditioner condenser obstructed. Thermostat stuck closed. Fan clutched. Electric fan motor or switch defective. Ignition faulty. Coolant flow obstructed. Exhausted system restricted.

Solution

Fill and check leakage in coolant. Adjust and replace belt if worn. Test, replace thermostat if defective. Replace fan clutch. Test ignition and time if necessary. Check water pump, hoses and radiator block. Check for restriction on exhausted system.

Problem

Engine does not reach or slow in reaching operating temperature.

Cause

Open or missing thermostat.

Solution

Test. replace or install thermostat if necessary.