Skip the auto shop - Our mechanics make house calls

Q: Diesel knock too high

asked by on

The diesel knock on my mitsubishi L200 4d56 non-turbo engine is too high. What causes this, and what is the remedy?

My car has 97000 miles.
My car has a manual transmission.

A: It is possible that your engine could be lo...

It is possible that your engine could be low on oil. I would recommend checking the engine oil level and condition.

If the oil level is low, this can cause the engine to make knocking sounds and potentially could damage the engine. If the condition of the oil is not good, this can also cause the engine to make noise because it is not lubricating the engine as well as it could be.

If you find your oil to be in one of these two conditions, I would recommend getting an oil change from a qualified professional, such as one from YourMechanic. They will be able to diagnose the knocking noise firsthand if the problem persists. Best of luck.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How do I use the Remaining Oil Life feature in the driver information center (DIC)?

The Remaining Oil Life feature in the driver information center (DIC) lets you know how much life your oil has left, on a 1-100% scale. To view the Remaining Oil Life feature, press the MENU button until the DIC displays...

Q: Engine knocking.

The most common noise like this is the serpentine belt tensioner knocking noise. The belt and tensioner replacement is the most common fix.

Q: My SUV is making a grinding noise

The noise may be coming from the transmission torque dampener. The transmission would need to be identified by the dealer as a failed part number on the transmission. If the number on the transmission match, then the transmission should be...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...