valves : Page 3 : Danny's Engineportal

Valve Stem Seals: Basic Function, Seal Types, Failure Symptoms

06/04/2024

Valve stem seals, control the lubrication of the valve stem, as it moves up and down in the valve guide. By specific design, all valve stem seals are made to include, a precisely controlled leak. […]

Listening for Valve Train Noise Under Hood

Valve Train Noise – Where Is It Coming From ? – Is It Bad ?

03/09/2024

Valve train noise, is usually due to excessive clearance, between two internal engine parts. Each valve utilizes, a valve spring that returns it to its, original closed position. So, if a valve spring has broken […]

Mechanical Engine Misfires – What Are They – How To Find Them

02/27/2024

Mechanical engine misfires, will not go away by themselves, and will only get worse over time. So, mechanical engine misfires, can be serious enough to cause, noticeable vibrations or even engine backfires. Unlike air to […]

Valve Lash – Getting All The Facts For Setting And Adjustment

01/26/2024

The term “valve lash” is often used when talking about, valve train adjustment. A valve lifter follows the contour of the camshaft lobe, and transfers that motion to open and close the valves. (sometimes referred […]

Rocker Arms Dislodging – Along With Valve Seats Falling Out

01/23/2024

Rocker arms dislodging on certain engines, is a common problem and is usually misdiagnosed. So, a customer comes in and complains of a poor running engine. After diagnosing it, you find engine misfire codes. And, […]

Cylinder Leak Down Test – What Are The Results Telling You

01/16/2024

Doing a cylinder leak down test, especially in conjunction with a compression test. Should allow you to quickly determine, the basic condition of any engine. So, a compression test is a “dynamic test” (engine moving). […]