Engine Archives - Page 5 of 209 - UnderhoodService
Understanding Stop/Start Charging and Starting Systems

The problem may not have been caused by a complicated reason, something simple may have caused the system not to work.

GM Active Fuel Management System Service

The AFM activation and deactivation are controlled by the Valve Lifter Oil Manifold or VLOM.

Spark Plug Removal Techniques On Ford Modular Engines

Ford’s Modular engine has been known to give techs a hard time during a spark plug replacement. 

Understanding Electronic Throttle Controls

The benefits of an electronic throttle control system include overall reliability and more efficient operation.

Tool Up For Belts

Here are six tools to make your next belt replacement more productive.

Duramax 6.6L Turbocharger Replacement

No matter the symptoms or damaged parts, the root cause of the failure must be diagnosed and resolved.

Diesel Glow Plugs Operation

Having higher pressures and metered fuel at the right time means more efficiency, less pollution and lower fuel consumption.

Ford Grinding Or Rattling Sound From The Transmission

Ford 2018-2019 F-150 with the 5.0L Engines may be experiencing a strange metallic grinding sound. Here’s the fix.

LTF and STF Fuel Trim Engine Codes P0170, P0175, P0172, P0174

Understanding what parts should be replaced to get ride of these codes.

Intermittent Rattling Noise While Driving?

All affected vehicles typically have a 5.4L 3-valve engine.

What Causes Direct Fuel Injectors To Clog?

In the case of a direct fuel injector where the tip is exposed to the combustion event, carbon can stick to the nozzle and cause a bad spray pattern, because carbon searches for other carbon.

Lexus Vibration, Tapping or Misfire After Cold Soak

Here are the steps to follow if experiencing vibration, tapping or misfire after a cold soak in your customers Lexus.