sand paper
sander
scored
scraper
seal
sealants
sealed surfaces
seat
seat counterbore
seat recession (i.e. valve seat recession)
seized
sending unit
sequence
setting
setup (n)
shaft
shims (i.e. for valve springs)
shorted
shorting (e.g. a cylinder)
shot peen
side
signal
signs (e.g. indications)
silicone rubber sealant
skirt
slipped (e.g. a fan belt)
slipped (e.g. slipped balancer)
sludge
smoke
solenoid
solvent
spacer (i.e. valve spring shim)
spark
spark plug
spark plug cables
spark plug wires
specified
speed handle
spray (v)
spread
spring (e.g. valve spring)
sprocket
spun
stable
start (v)
starter armature
starter current draw
starter drive
starter motor
stem
step
stethoscope
sticking valves
straight edge
stretch
stuck
stuck
supercharger
supply
support
surface
system
