Condition
Engine
causes
knocking
very
often
Engine
does
not
deliver
enough
power
Location
Spark
plugs
Transistor
ignition
unit
California
models
Distributor
Spark
plugs
Distributor
Spark
plugs
Engine
Electrical
System
Probable
cause
Fouled
Leak
of
electricity
at
upper
porcelain
insulator
Faulty
transistor
ignition
unit
Improper
ignition
timing
too
advanced
Coming
off
or
breakage
of
governor
spring
Worn
pin
or
hole
of
governor
Burnt
too
much
Improper
ignition
timing
too
retarded
Improper
functioning
governor
Point
gap
too
narrow
Non
California
models
Foreign
particles
stuck
in
air
gap
Cali
fornia
models
Fouled
EE
50
Corrective
action
Clean
Repair
or
replace
Replace
Correct
Correct
or
replace
Replace
Replace
Correct
Replace
assembly
Correct
Oean
Oean
