Is it bad to let diesel trucks idle?

Most engine manufacturers recommend that newer diesel engines idle for no more than 3 minutes before driving. Letting an engine idle actually does more damage to the engine than starting and stopping. Running an engine at idle causes twice the wear on internal parts com- pared to driving at highway speeds.

Why are diesel engines kept running?

Diesel engines work on compression ignition and do not have an external ignition agent (spark plugs) as in petrol engines. So, in order to start a diesel engine, it has to attain its optimal working temperature by air-fuel compression alone. This is extremely difficult to do in a large diesel engine like as in a train.

Do diesels run better with cold air?

Both petrol and diesel engines work better with cold intake air when running but the colder weather can make starting more difficult.

Why do truckers leave their trucks idling?

Truckers, both independent owner-operators and fleet drivers, leave their engines idling for three main reasons: weather conditions, economic pressures, and old habits. In cold weather, a truck’s engine and fuel tank need to stay warm.

What does high idle do on a diesel?

Just Horsing Around. For those who idle their trucks for long durations (tradespeople, whatever) it keeps the oil pressure and engine temps higher which is overall better for the engine.

Why do diesel truck drivers leave their trucks running?

Diesel fuel turns to a gel state in freezing temperatures so truckers usually add anti-gel fluid into the fuel to help prevent this, and they leave the engine running to keep the fuel from gelling in the engine. Some trucks do not have an auxiliary power unit (APU) to generate electricity when the engine is turned off.

Is it bad to turn on and off a diesel?

While it isn’t particularly bad for it, there just isn’t much reason to do it; most diesels start perfectly fine when cold, warm up in a reasonable time, and don’t have gelling issues. turning it off simply doesn’t exist with a modern diesel truck.

How cold is too cold for diesel?

The diesel fuel in your fuel tank will become like gel at a temperature of 15 Fahrenheit or -9.5 Celsius and you will have trouble starting your engine. Anything below 15 Fahrenheit / -9.5 Celsius can and will cause problems for your diesel vehicle. The diesel won’t be solidly frozen, but it will not be in liquid form.