A mechanic holds old spark plugs. Defective spark plugs, stained with motor oil. Soot on the spark plugs.
Schlüsselwörter
spark,
plug,
closeup,
mechanic,
inspection,
master,
soot,
old,
oil,
defect,
dirty,
ignition,
diagnostic,
tool,
machine,
engine,
repair,
maintenance,
work,
man,
technology,
transport,
professional,
control,
service,
job,
garage,
fuel,
combustion,
uniform,
repairman,
restore,
technician,
workplace,
automobile,
electricity,
exploitation,
wet,
workshop,
hand,
malfunction
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