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・Fair and transparent pricing

Get a quote

What others are asking

Q: Amount of A/C refrigerant required for my Hyundai Santa fe 2002 GLS

It should have a sticker under the hood stating the amount of R134a to be 1.35lbs or .6kg. You should put about 1 oz of A/C oil in the condenser and the compressor should have the amount it needs on...

Q: The car is knocking

The knocking would have to be listened to by a mechanic before a diagnosis can be made, since different kinds of knocks mean different problems. The serpentine belt should be removed prior to a diagnostic test, to eliminate the possibility...

Q: I have been hearing a vibration in the back when accelerating it's almost like a clicking sound.

Hi there. The clicking sound/vibration in the rear of the vehicle upon acceleration could be, several possibilities. A loose wheel, a bad wheel bearing, a loose or broken suspension component. These are likely culprits but there are still more possibilities....

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.