How to Check Engine When Buying Used Car
Visual Inspection
Start by popping the hood and taking a good look at the engine. Look for any obvious signs of damage, such as leaks, cracks, or broken parts. Also, check the oil level and condition. The oil should be clean and free of debris, and the level should be between the “full” and “add” marks on the dipstick.
Listen for Noises
Start the engine and listen for any unusual noises. A healthy engine should run smoothly and quietly. If you hear any knocking, ticking, or grinding noises, it could be a sign of a problem.
Check for Smoke
Look for any smoke coming from the exhaust pipe. Blue smoke can indicate a problem with the engine’s oil consumption, while black smoke can indicate a problem with the fuel system.
Test Drive
Take the car for a test drive and pay attention to how the engine performs. Does it accelerate smoothly and powerfully? Does it idle smoothly? Are there any strange noises or vibrations?
Compression Test
A compression test can help you assess the condition of the engine’s cylinders and valves. A mechanic will use a special tool to measure the pressure in each cylinder. The results of the test can help you identify any potential problems.
Leakdown Test
A leakdown test can help you identify any leaks in the engine’s cylinders, valves, or gaskets. A mechanic will use a special tool to introduce compressed air into each cylinder and then measure the amount of air that leaks out. The results of the test can help you identify any potential problems.
Borescope Inspection
A borescope inspection can help you get a closer look at the inside of the engine’s cylinders. A mechanic will use a small camera to insert into the cylinders and take pictures. The pictures can help you identify any potential problems, such as scratches, cracks, or wear.
