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Valve Train

Valve Train

Automotive Engine Valves - Function - How They Can Fail - Testing
Engine Testing

Automotive Engine Valves – Function – How They Can Fail – Testing

January 11, 2021

So, the main function of automotive engine valves is, to let air in and out of the cylinders. As a result, the valves in your cylinder head, are a vital component of your engine and […]

Valve Springs - Function - Failure Symptoms - Causing Possible Damage
Engine Damage

Valve Springs – Function – Failure Symptoms – Causing Possible Damage

January 8, 2021

Valve Springs in your engine have a very basic job, but how they do it is very important. So, one very important point to keep in mind is that they all; lose tension and weaken […]

Valve Lifters - Hydraulic And Mechanical - What Is The Difference
Engine Top End

Valve Lifters – Hydraulic And Mechanical – What Is The Difference

December 26, 2020

Valve Lifters, Hydraulic And Mechanical. So, what is the big difference. Both hydraulic and mechanical valve lifters have the same job, but do it differently. They both follow the contour of the camshaft lobe and […]

GM 3100 - 3400 Engine Issues - Cylinder Heads, Manifolds, Rocker Bolts
Engine Top End

GM 3100 – 3400 Engine Issues – Cylinder Heads, Manifolds, Rocker Bolts

December 11, 2020

GM 3100 – 3400 engine issues are still happening and are being repeated. We still have leaks, installation problems as well as cylinder head and rocker bolt issues. That’s because most people are still confused […]

Valve Stem Seals - Diagnosis Symptoms Under Different Conditions
Engine Top End

Valve Stem Seals – Failure Symptoms Under Different Conditions

June 15, 2020

Valve stem seals control the lubrication of the valve stem as it moves up and down in the valve guide. But, if too little oil flows past the valve stem seals the valve stem and […]

Engine Power Balance Test - Total Power Output Of The Engine
Engine Testing

Engine Power Balance Test – Total Power Output Of The Engine

June 12, 2020

The engine power balance test can be a great way to pinpoint a cylinder that’s under performing. This is an indication a cylinder is not working as well as the other cylinders in the engine. […]

Valve Lash - Getting All The Facts For Setting And Adjustment
Engine Top End

Valve Lash – Getting All The Facts For Setting And Adjustment

February 25, 2020

The term “valve lash” is often used when discussing valve train adjustment. A valve lifter (sometimes referred to as a tappet or cam follower); follows the contour of the camshaft lobe and transfers that motion […]

Rocker Arms Dislodging - Along With Valve Seats Falling Out
Engine Top End

Rocker Arms Dislodging – Along With Valve Seats Falling Out

February 20, 2020

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, […]

New Oil
Lubrication

Zinc Additives – They Are Needed For Flat Tappet Lifter Break-In

February 3, 2020

Zinc additives have been recommended by most engine manufacturers for years. So, Why do we have lower zinc and phosphorus levels in modern engine oils. Because, The American Petroleum Institute (API) has regulated the amount […]

Variable Valve Timing (VVT) - Basic Generic OBD-II Fault Codes
Engine Codes Lights Symbols

Variable Valve Timing (VVT) – Basic Generic OBD-II Fault Codes

February 2, 2020

Variable valve timing (VVT) systems aren’t just used to increase performance. Even more, With (VVT) the benefit to fuel consumption and emissions are slowly leaving the (EGR) valve in the past. Also, With variable valve […]

Engine Noise - The First Step Is Locating The Source Of The Noise
Noises And Vibrations

Engine Noises – Where Are They Coming From ? – How Bad Are They ?

January 27, 2020

With a little practice you can gain the experience and knowledge to interpret what engine noises mean. Always take the extra time to make a proper noise analysis before doing any engine repair work. Having […]

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How Do Engine Piston Rings Actually Work - What Causes Them To Fail
Engine Bottom End

How Do Engine Piston Rings Actually Work – What Causes Them To Fail

June 10, 2020

In everyday vehicles the engine piston rings have, the most important job of sealing the combustion chamber. So, one of the most prominent materials, used in making engine piston rings is cast iron. This is […]

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