Engine Diagnostics & Troubleshooting

Take the guesswork out of auto repair with our expert Engine Diagnostics and Troubleshooting guides. Whether you’re facing a stubborn “Check Engine” light, a mysterious “crank but no start” condition, or an intermittent rough idle, we provide the step-by-step procedures to find the root cause. Our resources cover how to use OBD-II scanners, interpret live data PIDs, and perform manual tests with multimeters and vacuum gauges. Learn to translate complex trouble codes into actionable repairs and master the logic of professional engine diagnostics to save time and money in the garage.

How To Do A Cylinder Leak Down Test – With Or Without A Tester

12/02/2025

Doing a cylinder leak down test, can tell you more about your engine than you think. Also, it can spot issues in specific areas, that other tests will not. So, a cylinder leak down test, […]

Check Engine Light (CEL) – What Can Cause It To Come On

11/28/2025

Seeing a Check Engine Light (CEL), is one of the most frustrating and confusing factors of owning a vehicle. So, the (CEL) is just a light, with no information. It tells you that there is […]

Vacuum Leaks – How To Quickly Find Them In 5 Easy Steps

11/14/2025

Vacuum leaks in today’s computer controlled engines, can cause very serious engine damage. When an engine that has computer controlled spark and fuel systems, have vacuum leaks, the following events occur. Because, these leaks pull […]

Repeat Engine Failures From Not Diagnosing The Original Problem

11/09/2025

The installer’s worst nightmare, repeat engine failures from not diagnosing the original problem. So, you have replaced an engine, cylinder head, or crankshaft in your car. But a short time later you have a repeat […]

Starter Motors Going Bad – May Display A Few Symptoms First

10/31/2025

The starter motor, is what gets your engine running, when you turn the ignition key or push the start button. So, a starter motor, gets a lot of wear during its life. As a result, […]

Cylinder Power Balance Testing – Uncover Hidden Engine Issues

10/19/2025

So, performing a cylinder power balance test can help uncover hidden engine problems; which are commonly missed with other tests. This test can find problems related to engine misfires, lack of power, or just a […]

Engine Oil Pressure Warning – Possible Causes And Testing

09/22/2025

Suddenly, an engine oil pressure warning light or a low oil pressure reading, appears on your dash. At that point, the engine oil pressure warning, is the only thing you should be thinking about. Above […]

Throttle Position Sensor (TPS) – Function – Failure – Testing

09/03/2025

So, the throttle position sensors function (TPS), is to supply vital information to the vehicles engine control unit (ECU). And, this information is based on, the actual position of the engines throttle valve. So, your […]

Engine Stalling – Proper Troubleshooting And Maintenance

08/25/2025

Engine stalling problems, can be hard to find and are often, sensor or temperature related. And, are more likely to occur, during cold weather or when starting a cold engine. So, this kind of engine […]

COPYRIGHT © 2026 Danny's Engineportal by Danny Bender - DISCLAIMER: All wallpapers and backgrounds found here are believed to be in the "public domain". Most of the images displayed are of unknown origin. We do not intend to infringe on any legitimate intellectual right, artistic rights or copyright. If you are the rightful owner of any of the pictures/wallpapers posted here, and you do not want them to be displayed or if you require a suitable credit, then please contact us and we will immediately do whatever is needed either for the image to be removed or provide credit where it is due. Thank You !