Whether you drive a semi-truck or pickup that runs on diesel, your engine is prone to unique issues. By understanding these, you can take your vehicle to an auto shop before you end up on the side of the road in need of a tow. Here are a few problems to be aware of. 

How to Troubleshoot Trucks With Diesel Engines

1. Low Power

Several problems can cause a truck to have difficulty accelerating when you step on the gas. In some cases, clogged fuel filters may block the diesel from efficiently reaching the engine. Similarly, clogged fuel injectors underpower the engine and make it difficult to gain speed. Transmission problems can also affect acceleration, so visit an auto shop to prevent wear. 

2. Dark Exhaust

If your exhaust billows with dark smoke, you’re reducing visibility for other drivers, creating air pollution, and potentially risking a ticket. This problem occurs when the air-to-fuel ratio is off and your vehicle burns excess diesel. The source of the problem could be the injectors, air filter, or exhaust gas recirculation (EGR) valve, which can be inspected at your local auto shop.

3. Bad Glow Plug

A gas engine relies on a spark plug to ignite the fuel. A diesel truck, on the other hand, has a glow plug. If this heating element is broken or underperforming, your vehicle may struggle to start, especially when the temperatures drop.

4. Oxidized Oil

If you don’t drive your diesel vehicle frequently, the oil could oxidize due to air exposure. This makes the liquid bubbly and prevents it from properly lubricating your engine’s components.

If you only use your diesel vehicle a few times a year, make sure you check the oil before you start the engine. If it looks sludgy and thicker than normal, have it replaced.

Keep your diesel engine running smoothly with the help of Craig’s Towing & Repair. They serve Baraboo, La Crosse, Lake Delton, and Wisconsin Dells, WI, with roadside assistance. The La Crosse location also handles auto repairs. Their flatbed towing trucks are powerful enough to handle large diesel vehicles, so if you end up stranded due to an engine malfunction, call (608) 784-1638. You can also visit their website to learn more about this auto shop.