Skip the auto shop - Our mechanics make house calls

Q: My engine has a ticking knocking type of sound. It runs fine not buring oil or losing coolent. Sounds like the valves taping

asked by on

My engine has a ticking knocking type of sound. It runs fine not buring oil or losing coolent. Sounds like the valves taping or rod bearings I can't tell where it's coming from. The sound goes and comes

its a 98 ranger with a 2.5l has 147000 miles.
My car has an automatic transmission.

On a 1998 engine with 147,000 miles, the noise could come from anywhere. I typically check the engine oil level when cool to verify it is correct. Then, I run the engine for 5 minutes, shut it off, and check the engine oil level again.

If after running it for a short time and the engine oil level is lower, then it is likely you have a sludge build-up in your oil return passages preventing oil from draining back to the oil pan. If so, maybe an engine oil flush is in order. At the mileage, sometimes an oil flush may do harm to your piston rings or may help. You never really know.

If the oil level is correct after running the engine, you should have an oil pressure gauge connected to the engine to verify that it is within specifications to factory numbers to verify the oil pump is working properly.

An engine tapping noise could be anything from connecting rods on the crankshaft to an engine valve lifter. If the noise is a knock-knock in a repetitive motion at a slow speed, I would suspect lower engine problem, like a connecting rod (which requires a complete engine rebuild). If the noise is at a higher frequency, then I would think you have a valve issue which could be repaired at a much lower cost.

Based upon mileage, the feeling of how the engine runs, engine codes (if any), and an unknown level of maintenance, it is difficult to determine the exact issue. You may need an engine repair, a new engine, more oil, an oil pump, or just live with it. I’d have a certified mechanic take a look at it to diagnose and fix the sound that’s coming from your engine.

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
  • Home
  • Questions
  • My engine has a ticking knocking type of sound. It runs fine not buring oil or losing coolent. Sounds like the valves taping

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: Car won't start. It only makes a clicking noise.

Hi and thank you for contacting YourMechanic. If you are getting a clicking sound when trying to start your vehicle that is a very good indication that your battery is dead. Perform a battery voltage test and make sure there...

Q: What does a vehicle speed sensor look like?

There may be a couple of things going on at the same time here. Is the Check Engine Light on? A vehicle speed sensor problem may illuminate the Check Engine Light if the lack of signal is causing shifting errors....

Q: Sounds like a bolt rolling inside my transmission but the car rides fine no shifting issues can it still be a bad transmission?

Hello, thank you for writing in. While a rattling noise can come from several different places within the transmission, you will want to start with a basic transmission fluid service changing the fluid and the filter. During this process, the...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.