The heads on your commercial or fleet diesel are one of the most integral parts of your engine. The heads are comprised of the valvetrain, exhaust ports, intake ports, and injector ports. In essence, a head’s purpose is to regulate and time the intake of fresh air, the release of exhaust, the compression of fuel and air that provides combustion, and the entry point for fuel into the cylinder. The head is where all the complex aspects of engine operation occur...without it, you just have a chunk of metal with pistons in it, and no way to make them move. Here’s what you need to know about your heads, from Craig Johnson Automotive in Rowland Heights, CA.

At Craig Johnson Automotive in Rowland Heights, CA, we understand the importance of a job well done. You need it done fast, but you also need it done right - cutting corners in the home stretch is obviously a bad idea.

If you’re reading this, there’s a good chance you own or operate a fleet or commercial truck. If you do, then you probably know the difference between a job done, a job done well, and a job done perfectly. At Craig Johnson Automotive in Rowland Heights, CA, we strive for the latter.

Commercial trucks have heavy engines, and they spend a lot of time running, particularly at idle. As a result, the mounts that secure the engine to chassis of the truck have a tendency to wear out, causing all sorts of shaking and vibration that the driver will feel in the cab of the truck. At Craig Johnson Automotive in Rowland Heights, we can take care of that for you.

At Craig Johnson Automotive in Rowland Heights, CA, we understand that big trucks mean bigger risk on the road. Here are some tips to remember, to reduce the likelihood of an accident next time you’re on the job.

Your fleet or commercial truck works hard, every day. Most commercial vehicles are heavy, and constantly under load. As a result, your brakes will inevitably develop issues over time. At Craig Johnson Automotive in Rowland Heights, CA, we can fix that.

At Craig Johnson Automotive in Rowland Heights, CA, we service all kinds of trucks, young and old. If you’re in the market for a new or new-to-you truck, here’s some advice we encourage you to consider.

There comes a time in the life of every fleet vehicle or commercial truck when you have to decide - is it time to retire that truck or van, or should you put the money into fixing it? At Craig Johnson Automotive in Rowland Heights, CA, we’re here to help.

At Craig Johnson Automotive in Rowland Heights, reliable trucking is our main concern. From oil changes to engine rebuilds, our expert mechanics have the knowledge, equipment, and ability necessary to keep your rig on the road, and performing its best. We also believe that driver knowledge is key to achieving this goal; in pursuit of that, here’s some information on a simple but important part of your truck, the tie rod.

Modern fleet vehicles are fitted with an array of airbags, strategically placed all around a vehicle to keep the driver safe in the event of a collision. If you own or operate a fleet or commercial truck, you likely don’t think about your airbags that often, but you definitely want them there when you need them. Here’s a are facts regarding airbags, from Craig Johnson Automotive in Rowland Heights, CA.

At Craig Johnson Automotive in Rowland Heights, we know that maintenance and repair can go a long way toward keeping your trucks on the road. We also know that sometimes, things have to be replaced altogether. The rear end, or differential, isn’t a component that needs to be replaced often; but when it does, a new one will make your truck feel like new.

What are radial tires, where do they come from, and why are they important? If you own or operate a fleet or commercial truck, radial tires are an advancement you’re thankful for, whether you realize it or not. Here’s why, from Craig Johnson Automotive in Rowland Heights, CA.

Windshield wipers are one of those things that you never think about until you need them. From Craig Johnson Automotive in Rowland Heights, here’s a reminder to keep yours in good shape, so you’re ready when weather strikes.

While fleet trucks and vehicles tend to persist as some of the more simplistic vehicles on the road, the modernization and computerization of the automotive world has not left them untouched. These days, everything is equipped with computer systems, sensors, modules, and more. At Craig Johnson Automotive in Rowland Heights, CA, our professional technicians have the knowledge, equipment, and ability necessary to provide the accurate and vital diagnostics required to keep your fleet on the road.

At Craig Johnson Automotive in Rowland Heights, CA, we want you to be able to recognize an issue with your tires. It’ll keep you safe, prevent a blowout, and let you see for yourself whether or not a tire needs to be replaced. Here’s a short guide to tire problems.