When you search for a used vehicle, it pays to bring a checklist of issues to consider while shopping. That applies to diesel vehicles too, though they differ from gas-powered vehicles in a few ways. Diesel engines are known for their efficiency, durability, and effectiveness in both everyday and working vehicles. If you’re looking for a used diesel vehicle, knowing what to watch for during the inspection can save you headaches. Here’s what to look for when buying a used diesel vehicle so you can make a confident purchase.
Vehicle Maintenance History
Every vehicle has a history, and that means more than where it’s traveled. Specifically, it refers to its maintenance records. With proper care, well-maintained diesels last for years. Find evidence of regular oil changes, filter replacements, and periodic checkups. An owner who can’t provide thorough maintenance records most likely neglected the vehicle. Simply failing to perform regular oil changes can lead to engine damage and failure, so look for consistent care. Failure to perform regular maintenance is one of the mistakes that can hurt a Powerstroke or other engine.
Engine Performance Check
How does the engine look? Is it a lean, and more importantly, clean machine? Look for visible oil leaks around and under the engine. Start it up, and listen for unusual noises or excessive vibrations as it runs. Such anomalies signify an engine with serious wear and tear.
Inspect the Fuel System
Since diesel fuel systems operate at high pressure, fuel system leaks demand costly repairs. Watch for signs of fuel system wear, including erratic idling, black smoke billowing from the exhaust, or trouble starting the vehicle. Commonly, if the previous owner used low-quality fuel, it might have left sediment build-up in the fuel system. This seriously impacts performance.
Cold-Start Testing
A cold-start test involves starting the engine after it has completely cooled down. It’s an excellent way to spot starting problems common in poorly maintained diesel vehicles. If the engine has trouble firing up, takes too long to stabilize, or produces excessive smoke, it’s a sign of engine or battery issues.
Mileage vs. Condition
Looks aren’t everything, but considering looks alongside mileage helps assess how much life and usefulness a diesel has left in it. A truck or other vehicle with high mileage that nevertheless still looks and sounds good is a pretty great deal. Many diesel vehicles travel hundreds of thousands of miles on the road with proper care and can go even higher. Still, use mileage and a thorough inspection of the engine, suspension, and drivetrain to determine you’re not overpaying.
That’s a short guide on what to look for when buying a used diesel vehicle. Buying a used diesel vehicle is a fantastic investment, but enter the sale with your eyes wide open and this checklist in hand.
Recommended reading: How to Find Good Cars in the Used Car Market
