VCDS and OBD diagnostic device in the On-Board Diagnostics Shop
Diesel technology, engine technology, vehicle diagnostics, repair & maintenance.

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Colder intake air means...
1) the air has a higher oxygen content
2) the air has a lower oxygen content
3) the soot emission of the engine increases
4) a greater mass of combustion air in the cylinders
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In the first stroke of a diesel engine...
1) air is drawn in
2) a fuel-air mixture is drawn in
3) fuel is injected
4) the burned gas is expelled
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Diesel pre-chamber engines need glow plugs for cold starting because...
1) the injection pressure is not high enough
2) the chamber surface removes too much heat
3) the injection pressure is too high
4) pre-chamber engines do not need glow plugs
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The main difference between a diesel engine and a gasoline engine is...
1) the gasoline engine has self-ignition
2) the gasoline engine draws in pure air
3) the diesel engine draws in a fuel-air mixture
4) the diesel engine has no spark plug
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