Keeping your fuel system maintained will prevent premature parts failure and poor running conditions. Here at Craig Johnson Automotive we have tips on the important aspects of diesel fuel system maintenance, to keep your diesel fleet trucks running smoothly - longer.

Air. Air in the system causes all kinds of issues, from hard starting, poor running conditions, or an engine that won’t run at all. If too much air gets in the system, the fuel pump won’t be able to deliver fuel, and the engine will stall, die, or fail to start.  Air enters the system via a leak or a bad seal - a deteriorated o-ring, worn component, faulty hose, or otherwise. Here we inspect your lines and connections to ensure they are in good shape and track down any leaks we notice air in the system.

Every year, vehicle electrical systems get a little more complicated. These days, many cars on the road contain up to a mile of wiring, running throughout every corner of the vehicle. With all those wires, there’s bound to be an issue at some point; Craig Johnson Automotive in Rowland Heights, CA is here to help you recognize a potential electrical issue, and know what to do about it.

Once your new tires are mounted and balanced, you’ll want to keep them in good shape. To get the most out of your tires, inspect them regularly and keep up with maintenance - the difference between a tire that lasts 100k miles, and one that lasts 10k, mostly comes down to how well it’s been taken care of.

If you’re running a truck (or trucks) without an auxiliary oil cooler, it may be something you want to consider. Here’s some information on auxiliary oil coolers, what they are, and why they’re a great upgrade, from Craig Johnson Automotive in Rowland Heights, CA.

Most modern transmissions have a “limp mode” or “safe mode” that they may default to if an error is detected. What does it mean if your transmission has entered safe mode, and where do you go from there? Craig Johnson Automotive in Rowland Heights, CA has the answers you need.