diycivic

This started happening today. I have and automatic 2000 honda civic ex with 176k miles on it. When I give it gas, I hear a knocking noise in the engine. I lifted the hood to confirm and the noise is coming from the engine. Under the valve cover. Could it be a lifter? My engine has a slow oil leak from the head. I recently changed the oil and filter this past week. I was having idle issues so I removed the throttle body for a clean hoping it may help, this was a few days ago.. It seemed to help as well as help throttle response. Any idea?

tony_2018

Get your valves adjusted.

94 accord typeR

valves normally make a ticking sound

NotARaCist

iTrader: (1)

"From the engine" is very vague. From the head? From the block? Also, is it a tapping noise, or a knocking noise? Does it vary with RPM, or is it consistant?

Side note: Our engines don't have lifters. Cam touches rocker arm, rocker arm touches valve.

diycivic

It more of a tapping sound. It does vary with rpm. Speeds up the moreni mash the gas.

diycivic

Update. Its the rod bearings. 176k miles on the engine. Its done for.

NotARaCist

iTrader: (1)

How did you verify that? Metallic fragments in your oil?