55
3.Spark plug points improperly set.
Points too close together or too far apart may cause missing.
Spark plug points should be set .030 inch (0.76 mm.).
Accumulation of carbon or oil on spark plug porcelain.
Corrosion on end of spark plug cables at distributor cap connection.
4.Distributor faulty.
Breaker arm sticking.
Points improperly set or burned and pitted.
The correct point opening is .020 inch (0.51 mm.).
5.Faulty condenser or coil.
6.Water in fuel.
7.Engine overheated.
ENGINE MISSES AT LOW SPEED ONLY.
1.Intermittent flow of fuel.
2.Poor ignition or comrsression.
3.Distributor points improperly adjusted or making poor contact.
4.Incorrect timing.
5.Faulty condenser.
6.Spark plug points too far apart (on pull) or too close together (on idle).
7.Air leak at intake manifold connections.
LOSS OF POWER.
(The engine will run but will not pull the car under a heavy load.)
1.Ignition improperly timed.
2.Lack of fuel or carburetor flooding.
3.Dragging brakes.
4.Engine overheated because of lack of oil or water.
5.Poor compression.
6.Improper valve timing.
7.Clutch slipping.
8.Exhaust pipe or muffler obstructed.
LACK OF COMPRESSION.
1.Faulty cylinder head gasket.
2.Insufficient tappet clearance.
3.One or more improperly fitted pistons or piston rings.
4.Valves not seating properly.
POPPING BACK THROUGH CARBURETOR.
(This usually indicates too lean a mixture).
1.Dirt in the carburetor. (Fuel pump strainer dirty, see Page 28.)
2.Water in fuel.
3.Air leak at intake manifold connections.
4.Incorrect ignition timing.
5.Incorrect valve timing.
6.Inlet valves holding open.
7.Spark plug wires connected to incorrect plugs. Firing order 1-3-4-2.
ENGINE OVERHEATING.
1.Lack of proper lubrication.
2.Stoppage of water circulation, faulty thermostat or lack of water.
3.Slipping fan belt.
4.Ignition timing improperly set.
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