Engine Testing

Engine Vacuum Gauge Test: A Simple Guide

03/11/2026

An old-school engine vacuum gauge test is a powerful ally. Because, it provides a direct window into your engine’s soul. This tool is often forgotten in the digital age. Yet, it can diagnose an engine […]

Engine Coolant Antifreeze – Engine Cooling and Testing Made Easy

01/26/2026

The job of engine coolant antifreeze is to protect the engine from severe temperature and corrosion. That’s why you should always flush and replace your engine coolant antifreeze at recommended intervals. Otherwise, it will break […]

Engine Compression – What Can Cause, Low Or No Compression

12/28/2025

So, engine compression is the pressure created, inside each of the engine’s cylinders. And, low or no compression leads to, incomplete combustion and misfires. Symptoms of low engine compression can be, an illuminated (CEL) and […]

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, […]

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 […]

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 […]

Catalytic Converter – Failure Signs And Testing – Learn The Basics

10/03/2025

So, a catalytic converter, is a device used to reduce the emissions, from an internal combustion engine. Consequently, the catalytic converter works, by breaking down unburned gases, left over by the combustion process. And, requires […]

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 […]

Vacuum Test Basics – What To Check And How To Do It

08/15/2025

First, doing a vacuum test, can tell you more about your engine, than you think. And, it is one of the easiest and least expensive ways, to check an engine for serious issues. So, engine […]

Fuel Pump Relay – Function – Failure – Testing Procedures

06/09/2025

The fuel pump relay, is activated whenever the ignition is turned on. So, the primary function of the fuel pump relay, is to maintain a steady voltage supply to the fuel pump. Therefore, when switched […]

(O2) Oxygen Sensor: Function – Failure Symptoms – With Testing

03/10/2025

The, (O2) Oxygen Sensor, measures the difference, between the amount of (O2) in the exhaust gas. And, the amount of (O2) in air. So, with that information and other sources, the (ECU) can decide, whether […]

Automotive Engine Valves: Function, Failure, and Testing

02/20/2025

The main function, of automotive engine valves, is to let air in and out of the cylinders. Above all, the valves in your cylinder head, are a vital part of your engine and undergo, enormous […]

Compression Test: How To Do It, Dry Or Wet – Review The Results

01/29/2025

Doing a compression test, is a good way to measure the condition of the rings, cylinders, and valves. So, if your engine is running rough or is lacking power, consider doing a compression test. Also, […]

Engine Fuel System: Signs of Trouble and What to Check

11/10/2024

So, the engine fuel systems job, sounds pretty basic. It delivers fuel from the fuel tank, to the engine. Testing the engine fuel system, is relatively simple. Engine fuel system consists of the filler hose, […]

Noid Light: Tests For An Electrical Signal, At The Fuel Injector

11/01/2024

Learning how to test fuel injectors, using a noid light, is easier than you think. Noid lights, provide a quick and easy method for detecting, if there’s an electrical signal, at the fuel injector. So, […]

Alternator or Battery Failure: How to Diagnose and Save Money

10/30/2024

Having a alternator or battery failure is bad new, because they are both components of the charging system. That makes diagnosing a alternator or battery failure, a bit tricky. Because, the electrical power in your […]

Engine Power Balance Testing: Total Power Output Of The Engine

09/17/2024

The engine power balance test, can be a great way to pinpoint, a cylinder that is underperforming. Above all, a cylinder that is not working as well as, the other cylinders in the engine. The […]

Crankshaft Position Sensor Being Unplugged

Crankshaft Position Sensor – (CKP) – Testing And Replacement

08/07/2024

Crankshaft position sensors (CKP) read ignition timing, the (RPM) signal, and determine engine speed. But, when the crankshaft position sensor (CKP) fails, it stops transmitting the readings. Consequently, the crankshaft position sensors (CKP) readings, contain […]