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Page Title:
Rapid Wear Of Centrifugal Advance Mechanism |
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 ELECTRICAL
TROUBLESHOOTING
CAUSE
REMEDY
3. Spark plugs of wrong heat range
3. Install spark plugs of a lower heat range.
Engine Knocks Or Pings
1. Ignition timing fast
1. Retard timing.
2. Advance mechanism defective; distributor
2. Rebuild or replace distributor.
shaft or bushings worn
3. Spark plugs of the wrong heat range
3. Install plugs of a lower heat range.
Rapid Wear Of Centrifugal Advance Mechanism
1. Loose or worn timing chain or worn drive
1. Replace parts as necessary.
and camshaft gears
Pitted Contact Points
1. Condenser of wrong capacity
1. Install condenser of correct capacity.
2. Leads to coil reversed
2. Re-arrange leads.
3. Voltage regulator setting too high
3. Adjust voltage regulator.
4. Weak distributor contact spring
4. Adjust spring tension or replace spring
and contact points.
5. Oil or crankcase vapors entering the
5. Clean engine breather. Avoid over-
distributor
lubricating the distributor.
6. Loose or dirty connections in the coil
6. Clean and tighten connection. Replace
primary circuit
wires that are corroded or have broken
strands.
Spark Plugs Defective
1. Excessive gap
1. Reset points.
2. Cracked insulator
2. Careless installation. Install new plug.
3. Plug sooty or wet with fuel
3. Clean and adjust. Repair defect in fuel
system, most likely in carburetor. Check at
plug.
B-92
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