What Every Buyer Should Check in a Used Car Engine?

Your excitement about buying a used car can quickly turn into confusion. You realize there is a lot you don't know about what's under the hood. The selected vehicle may seem attractive and in mint condition. But its true value resides in the condition of its engine.

There could be mechanical and electrical defects that might remain hidden, especially when you have no idea what to check in a used car engine. And if you are not sure what parameters to check before making a final decision, you are not alone in this confusion.

The smartest way to avoid expensive blunders is to combine the basic checks with a trusted independent vehicle inspection service provider. Here is a checklist you can refer to before taking chances with your luck.

What to Check In A Used Car Engine

1.  Start with a visual inspection

First things first. And before you even open the driver's seat door, open the hood of the car. Start looking at it carefully. Make a note in mind: a clean engine is not always a good sign. The clean engine may be concealing hidden leaks. Search for oil stains, cracked hoses, and corrosion. These minor signs that you observe indicate that there may be existing problems. Also look for aftermarket parts and modifications. If you find anything that looks tampered with or clean, it is worth raising your queries.

2.  Check engine oil condition

Remove the dipstick from its holder to check the engine oil condition. Healthy oil should be amber or light brown. The presence of dark particles and a burnt smell indicates poor engine maintenance. Milky oil indicates coolant contamination of the oil system, which is a major engine issue  and can indicate overheating or a serious engine problem. The test is quick, yet most buyers frequently miss it.

3.  Listen to the engine sound

Start the car and listen attentively. A healthy engine should run without knocking, ticking, hissing or grinding. Unusual sounds indicate that the engine may have major issues, such as worn components or internal damage.

4.  Keep an eye out for smoke from the exhaust

The exhaust smoke provides crucial information about the engine condition:

●     Blue smoke: burning oil

●     White smoke: internal coolant leakage

●     Black smoke: too much fuel

The presence of these indicators results in costly future repairs. Do not ignore these signs, even if the automobile seems to function normally.

5.  Inspect fluid levels and leaks

In addition to engine oil, check transmission fluid, brake fluid, and coolant levels. The presence of low or contaminated fluids indicates poor maintenance. Serviced engine oil should be clear amber. Transmission fluid can vary, but the majority should look clear pink or red. The brake fluid should also be clear amber and if it’s dark instead, it’s been contaminated by moisture (water). Check for leaks below the car. Minor leakages can turn into major problems if ignored.

6.  Check engine performance during a test drive

Take a test drive, and this is not negotiable. Keep an eye on the engine behavior during acceleration. Do you feel a jerk, low-power or hesitation? These can be signs of misfiring cylinders, or a faulty fuel system.  An optimally functioning engine also idles smoothly with consistent performance. Otherwise, there’s a good chance there is at least some engine wear or damage to the engine.

7.  Scan computer systems for fault codes

All contemporary automobiles include onboard diagnostic systems. The check engine light needs deeper investigation when it either stays on or shows a recent reset. This will require using a low-cost code reader at minimum (usually about $40 at the parts store), which you will plug into the Diagnostic plug or “Data Link Connector” located under the dash to retrieve the system’s error codes.

 Sellers use code-clearing methods to create temporary solutions that only hide existing problems and make it look like the car is fixed, when it has significant problems. Opt for independent vehicle inspection services, as they offer professional scanning to detect concealed system defects.

8.  Do not skip your professional inspection

Get a professional car inspection for the best analysis. Consider it as a smart investment before you blindly buy any random used car.  The experts know all the existing problems of a used car that you may miss during your own inspection. A minimal inspection charge will save you thousands later.

Conclusion

When buying a used car, the engine should be thoroughly checked. Do not treat it as a guessing game. The experts know what to check in a used-car engine so you can drive away in peace.

If you’re in Los Angeles, look no further than Car Inspectors. We have highly skilled, ASE-certified car inspectors who will provide you with accurate information about the car's engine condition.

Contact us for a trusted, independent vehicle inspection service and spot red flags early, and avoid expensive future repairs.

Disclaimer:- The information provided in this content is just for educational purposes only, and is written by a professional writer. Consult us to learn more about Car Inspection.