Engine Testing

Crankshaft Position Sensor Mounted on Front of Engine

Crankshaft Position Sensor: Tracks Position and RPM of the Crank

06/22/2024

There are a number of symptoms, that can point to your Crankshaft Position Sensor (CKP) failing. But, can also be confused with the same symptoms, caused by issues with, your Ignition or Fuel Injection System. […]

Cooling Fan Relay – What Does It Do – Failure Symptoms – Testing

05/07/2024

THE COOLING FAN RELAY ESSENTIALLY FUNCTIONS AS, THE ON/ OFF SWITCH FOR THE ENGINE’S COOLING FANS. And, is therefore an important electrical component, of the engine’s cooling system. As a result, most cooling fans use […]

Wet Compression Testing Is A Step Up, From A Regular Test

04/21/2024

AFTER YOU HAVE DONE A BASIC COMPRESSION TEST, THE NEXT STEP IS, WET COMPRESSION TESTING. Above all, an engine needs a good seal between the rings, and the cylinder walls. Also, between the valves, and […]

Idle Air Control Valve (IAC) Mounted on Engine

Idle Air Control Valve (IAC), Function, Failure Symptoms – Testing

03/31/2024

SO, THE IDLE AIR CONTROL VALVE, IS RESPONSIBLE FOR MANAGING THE ENGINES IDLE SPEED. And, that’s what makes the idle air control valve, a major management component of the engine. Because, it decreases or increases […]

(O2) Oxygen Sensors – Function, Failure Symptoms, And Testing

03/22/2024

EVERY VEHICLE BUILT SINCE THE EARLY 1980’s, HAS ONE OR MORE (O2) OXYGEN SENSORS INTEGRATED INTO THE EXHAUST SYSTEM. So, (O2) oxygen sensors, confirm, that the proper air/fuel ratio, is actually reaching the engine. Consequently, […]

Compression Leak Between Cylinders - No Coolant Or Oil Leaks

Compression Leak Between Cylinders: Without Any Coolant or Oil Leaks

03/08/2024

So, having a compression leak between cylinders, can allow the compression, to leak from one cylinder to the next. This causes a loss of compression, and sometimes, allows exhaust gasses, back into the intake, depending […]

Running ( Dynamic ) Compression Test - How To Do It And Why

Running Dynamic Compression Test: Evaluating Individual Cylinders

03/03/2024

Firstly, a running dynamic compression test, confirms how effective each cylinder is, at pulling air in. Secondly, holding it for the correct amount of time, then letting it go, into the exhaust. So, if a […]

Crankshaft – Camshaft Position Sensor – Testing The Easy Way

02/19/2024

When a Crankshaft – Camshaft Position Sensor goes BAD, your vehicle will not start. Distributorless Ignition Systems (DIS) require a Crankshaft Position Sensor (CKP), and sometimes a Camshaft Position Sensor (CMP). So, the main difference […]

Bubble Test – Used In Conjunction, With A Cylinder Leak Down Test

02/06/2024

So, to determine the health of a head gasket, between two cylinders, try doing a bubble test. If you believe you have a leak, but just cannot find it, doing a bubble test may be […]

Automatic Shutdown (ASD) Relay – Function – Failure – Testing

01/22/2024

The function of the automatic shutdown (ASD) relay, is to shut off power to major systems. When the key is turned off, as a safety feature. So, when the automatic shutdown (ASD) relay is on. […]

Crankshaft Position Sensors – Function, Failure, Diagnosis, Testing

01/18/2024

Crankshaft position sensors, produce a signal, that talks to the engine control module (ECM) / engine control unit (ECU). Consequently, providing the exact position of the crankshaft, as it rotates in the engine. So, now […]

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). […]

Vacuum Leak Detection – The Safe Way To Find Vacuum Leaks

12/31/2023

A Vacuum leak can trick you, and your car computer into believing a particular sensor, or system needs fixing. Then, you start replacing components, hoping you’ll fix the problem, unsuccessfully. Often, a vacuum leak makes […]

Using A Vacuum Gauge, To Test The Condition Of Your Engine

12/21/2023

So, have you ever thought about using a vacuum gauge, to check the condition of your engine. Consequently, this is similar to doing a cylinder leak down test, but in a much easier way. Vacuum […]

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