A light, medium, or heavy duty vehicle often used for transporting goods. Frequently used to refer to consumer pickup trucks (light duty), but can also refer to large panel vans and diesel utility trucks (medium duty), and large 3-axle diesel trucks (heavy duty, aka lorry, big-rigs, semi-trucks).
Questions tagged [truck]
163 questions
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votes
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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 efficiency might explain the preference towards diesel…
juhist
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What are these loops in the brake line for?
I was watching a show on the Velocity network about truck modifications, and I saw the following closeup of the trucks master cylinder and booster.
What I don't know is why the designers put the loops in the brake lines coming out of the master…
cdunn
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1987 Dodge D150 High Idle and Dieseling
Truck is the high altitude/California emissions model, 318.
Carburetor has been replaced with a 4 barrel Holley 4160 I believe, although it might be a 4150, intake manifold was replaced to fit the new carb, nothing fancy though.
Truck was tuned and…
E-Rock
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9
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2 answers
No power but battery, alternator, and connection are good
This involves a company truck, 08 Chevy Silverado. I am not a mechanic or DIY nor do I play one on TV. The problem I am having is that every 2 or 3 months this truck will not start and completely looses power until it sits for several hours then…
user17549
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Purpose of highlighted mirrors in trucks
Whenever I see pictures of trucks made by Volvo, Scania or Daimler.
I wonder what are the highlighted mirrors in the picture used for?
I don't see those mirrors in most trucks made by Indian Commercial Vehicle makers like Tata Motors.
Chethan S.
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9
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Why are the spark plugs from the same 2 cylinders corroding faster than the others?
On my engine ('99, 360 v8 Magnum), I replaced the spark plugs less than 15k miles ago, because of misfires in cylinders 2 and 8. Those two plugs were badly corroded. Today I had to replace them again, and the same 2 were far more corroded than the…
J. Musser
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Why do trucks have a plastic flap under the front bumper?
I've noticed today's trucks have this 3-4" plastic guard that runs along the bottom of the front bumper. It strikes me as something that would hinder ground clearance or otherwise brush into things.
What purpose do these serve? Why have they…
Trevor D
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Should I over- or under-inflate my tires when towing?
We're about to take a trip across the country towing 5000lb (2300kg) with our SUV. It's rated for 9k, so I'm not worried about that, but I'd like to know how much to inflate my tires.
Advice on the Internet is all over the place:
Some people…
BlueRaja - Danny Pflughoeft
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What problems can come from AC not running for years?
I have an 81 Chevy C10 that I inherited from my dad. This truck has mostly sat for the last seven years, with me running it enough to keep it in condition. I've been using this truck mainly for the last year now and have replaced parts as needed. I…
Kevin Howell
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Cause of double trailer dump truck brake lockup
Earlier today I was driving behind a double-trailer dump truck configured something like this:
As we approached a red light, the driver obviously applied the brakes, and for the last 50 or so feet before coming to a stop, the rear wheels of the…
Digital Trauma
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How to do minor repairs to a radiator?
I have a radiator in my truck that has a slow leak which looks like it is oozing a little bit in between some of the fins. What are some of the ways to repair a radiator without replacing it? At what point should it just be replaced completely?
I…
Troggy
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What does this symbol on my dash mean? GMC W4500
The light can be switched on or off by operation of the stem on the right of the steering wheel, the same control that operates the windshield wipers.
I can't detect any difference whether it is on or off.
djsunkid
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votes
2 answers
Scania clutch issue with syncromesh gearbox
The clutch of our 124 Scania stopped working properly with the "14 speed" syncromesh gearbox. The first time it happened, it ground instead of smoothly going into reverse (a non-syncro gear), to back out of the shed. When this happens, it's also…
Rooey
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How much horsepower to expect from a cold air intake in Dodge Ram
It's a 1999 Dodge Ram 1500 4x4, Laramie SLT, automatic transmission, 5.9l magnum engine, and crew cab (222k mi).
I have a friend who could put a cold air intake on it, with a new hood. But I have a few questions.
Would there be a substantial…
J. Musser
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6
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Load on bed of pickup for extended period of time
I just got a Toyota Tacoma 2012 Sport long bed. I'm an artist and I make driftwood horse sculptures. I have two horses on the bed of the truck currently which comes to about 500 lbs. I intend to cruise around NYC to show my horses to a few clients…
Franco Cuttica
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