5 Problems and Repairs Common in Diesel Engines

Diesel engines, such as in big rigs, are vastly different from their automotive counterparts. While some of the problems may be similar, quite a few are different enough to make it harder for those who don’t know much about diesel engines to diagnose and fix a problem. Here are some of the more common problems and the causes.

Caterpillar C15 Injectors
Black Exhaust

It’s common knowledge that diesel engines give off more smoke through the exhaust than the typical automobile. But if it’s too much, it’s not only a problem with the engine but could also result in a hefty fine depending on the state you are driving in. The cause of this problem is a fuel ratio imbalance. Generally, more exhaust smoke is caused by too much air and not enough fuel. It could be a faulty injector, injector pump, EGR valve air filter, or, in some cases, a turbocharger if one is installed. That means you’ll need to grab new Caterpillar C15 injectors or other parts, but thankfully the fix is fairly easy in most cases.

Oxidized Oil

If your big rig has been in storage for a season, gets started infrequently, or has just sat in one place too long, you could do major damage to your engine. The oil has likely oxidized, with air getting into the oil and creating air bubbles. This can interfere with proper lubrication, causing a faltering engine or even engine damage. Luckily for you, the fix is easy. Replace the oil, and you are good to get back on the road.

Loss of Power

If you experience a loss of power, such as when starting or accelerating, you might have another fuel-related problem. You could also have a problem with the camshaft, but this is rarer than dirty fuel filters, loose throttle linkage, severe fuel contamination, excess buildup, excessive lubrication, fuel injector issues, a faulty turbo, or air getting into the system like with the oxidized oil, above.

Bad Glow Plug

Diesel engines don’t have spark plugs due to the differences between regular gasoline and diesel. Instead, a glow plug is used, which is a high-resistance heating element like a stove coil. If the truck won’t start, especially in cold weather, check on the glow plug and get a replacement if needed.

 Compression Loss

Compression issues generally mean a fairly serious issue with the engine. It can be caused by leaking and broken valves or piston rings, a blown head gasket, issues with the camshaft, a broken timing belt, or even a hole in the piston or cylinder. Determine your engine make and model, and get a kit like the Caterpillar C15 ACERT Inframe Kit to address these issues before it becomes a catastrophic problem.

About Internet Diesel

 When you need diesel engine parts, Internet Diesel is the only shop you will need. They have every part for every diesel make and model, offering the highest quality parts with the longest warranties of any online site that sells diesel parts. They will match or beat the lowest advertised price on a part. Whether you need a Cummins ISX injector or a Caterpillar turbocharger, Internet Diesel will get your big rig out of the mechanic’s shop and back onto the road in no time. One of the first online sites to sell diesel parts, Internet Diesel’s expert staff can help you find the right part and give you the advice you need to be your partner on the road.

 Find all the OEM and aftermarket replacement parts you need for your diesel engine with Internet Diesel at Internetdiesel.com


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