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36
votes
6answers
6k views

Why do heavy vehicles almost always use diesel engines?

I have always wondered why heavy vehicles such as large trucks and buses almost always use diesel engines, whereas in light cars there is a choice between diesel and gasoline engines. Engine ...
3
votes
2answers
2k views

Occasional Vibration at specific highway speeds.

Symptom: At certain speeds (70 mph, 40 mph, etc.) there is a noticeable vibration. Vehicle: 1998 GMC Sonoma (2 wheel drive) The vehicle was purchased used and had similar symptoms at the time. ...
2
votes
3answers
5k views

Slow acceleration, high fuel consumption after spark plug change

I have a 2000 Ford Ranger 4.0 L V6 4x4 model. I recently was having some problems with the truck idling too low when cold and I decided to change the spark plugs. I put in 4 out of the 6 new plugs and ...