Broken piston rings, or rings stuck in their grooves, will be the cause of smoking because they will permit an excess of oil to pass by them.

CHAPTER XIV
CAUSES OF TROUBLE

Engine will not start.No mixture.
No ignition.
No compression.
Engine starts,
but will not
continue running.
Clogged fuel pipe or strainer.
Air-bound tank or carburetor.
Clogged exhaust.
Wet spark plugs.
Governor out of adjustment.
Engine loses
power.
Retarded spark.
Poor compression.
Overheating.
Clogged exhaust.
Incorrect mixture.
Governor out of adjustment.
Tight bearings.
Dragging brake.
Slipping clutch.
Overloaded.
Engine stops suddenly.Ignition trouble.
Engine slows down
and stops.
Clogged fuel supply.
Incorrect Mixture.
Overheated.
Regular miss in
one cylinder.
Defective spark plug
or wire.
Irregular miss in
all cylinders.
Sticking contact breaker.
Defective distributor.
Clogged fuel line.
Irregular fuel feed.
Water in fuel.
Faulty ignition connections.
Engine runs
unevenly.
Incorrect spark plug gap.
Incorrect mixture.
Binding carburetor float.
Sticking valves.
Sticking governor.
Engine overheats.Spark retarded.
Faulty cooling.
Faulty lubrication.
Engine smokes.Black smoke;
mixture too rich.
Blue smoke; too much oil.
Broken or stuck piston rings.
Poor oil.
Engine backfires
through carburetor.
Mixture too lean.
Sticking inlet valve or
weak inlet valve spring.
Explosions in
exhaust pipe.
Missing spark.
Mixture too rich.
Sticking exhaust valve.

INDEX

Transcriber’s Notes:


The illustrations have been moved so that they do not break up paragraphs and so that they are next to the text they illustrate.

Typographical and punctuation errors have been silently corrected.