Explore Everything About Japanese Trucks

Step-by-Step Guide to Checking Engine Health

Step-by-Step Guide to Checking Engine Health

When purchasing a used truck—whether locally or from overseas—ensuring the engine is in good condition is one of the most critical steps. The engine determines the performance, reliability, and long-term value of the vehicle.

At EVERYCAR.jp, we thoroughly inspect engine condition before export and guide our clients to do the same. Here’s a step-by-step guide to checking engine health like a pro, even if you're not a mechanic.

Step 1: Start with a Visual Inspection

Before starting the engine, pop the hood and visually inspect the engine bay:

  • Check for oil leaks around the valve cover, oil pan, and engine block.

  • Look for cracked or brittle hoses and belts.

  • Inspect the battery terminals for corrosion.

  • Check the radiator and coolant reservoir for any signs of leaks.

💡 Tip: A clean engine bay isn’t always a good sign. Fresh cleaning could be hiding issues.

Step 2: Check the Engine Oil

Pull out the dipstick and inspect the oil:

  • Color: Light brown or amber is healthy. Dark or black oil may indicate overdue maintenance.

  • Texture: Should be smooth and free of metal particles or sludge.

  • Level: Should fall between the minimum and maximum marks.

Also check under the oil cap — milky residue could mean coolant is mixing with oil, a potential head gasket issue.

Step 3: Inspect the Coolant

Open the coolant reservoir (when the engine is cool):

  • The coolant should be bright green, pink, or blue, depending on the type.

  • It should not be muddy, rusty, or oily.

  • Low coolant levels may indicate a leak.

A healthy cooling system is essential to prevent overheating during heavy-duty use.

Step 4: Start the Engine and Listen Carefully

Turn on the engine and listen:

  • A smooth, steady idle is a good sign.

  • Be wary of:

    • Knocking or tapping sounds

    • Rough idling or vibration

    • Delayed response when pressing the accelerator

Unusual noises can signal internal engine wear, poor valve timing, or fuel system issues.

Step 5: Observe the Exhaust Smoke

While the engine is running, walk to the rear and check the exhaust:

  • No visible smoke is ideal.

  • Blue smoke: Burning oil – possible piston ring or valve seal problem.

  • Black smoke: Excess fuel – could be a fuel injector or air filter issue.

  • White smoke: Coolant leak – possible blown head gasket.

Excessive or discolored exhaust should never be ignored.

Step 6: Check for Vibrations or Shaking

  • Observe the engine mountings and overall movement.

  • Strong shaking or shifting may indicate worn mounts or misfiring cylinders.

  • Pay attention to vibration when revving – it should remain smooth.

Step 7: Look at Warning Lights and Scan with OBD

If the truck has a digital dashboard, look for:

  • Check engine light

  • Oil pressure or temperature warnings

  • Battery or alternator alerts

If available, connect an OBD-II scanner to read fault codes and get a deeper diagnosis of engine-related systems.

Step 8: Review Maintenance History

A well-maintained engine should have:

  • Regular oil change records

  • Timing belt/chain replacement history

  • Filter and fluid service logs

At EVERYCAR.jp, we include maintenance details and auction sheets (if available) to confirm a truck’s service history.

Step 9: Perform a Test Drive or Request an Engine Video

On a test drive (or by reviewing a detailed engine video):

  • Monitor acceleration response

  • Watch for hesitation or power loss

  • Ensure smooth gear shifting and idle

EVERYCAR.jp provides engine start-up and running videos upon request, so overseas buyers can assess the truck remotely with confidence.

Conclusion: A Healthy Engine = A Smart Investment

The engine is the most expensive and important part of any used truck. Taking the time to inspect it properly—or buying from a trusted supplier like EVERYCAR.jp who does it for you—can save you from costly surprises down the road.

Want a truck with guaranteed engine health?
Browse our stock or contact us to receive detailed inspection reports and videos before you buy.

If you are looking for Japanese Used truck, please check our list.
The list of Used Japanese used truck for sale(*Click to open).

We do our best work for all customer's partnership.
It's for SDGs goal number 17 "PARTNERSHIP FOR THE GOALS".
Let's work together!

-Explore Everything About Japanese Trucks