Valve Train
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. […]
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 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, […]
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) 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 […]
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 […]
Valve lash setting is something most drivers don’t even think about. First you need to know if you even have an adjustable valve train for valve lash setting. Either check your owner’s manual or call […]
The first sign of sticking valves is usually engine missing or running rough when cold. Sticking valves can also simply be the byproduct of cold-weather operation. In this case, the sticking valves will often work […]
(VVT-i) – Variable Valve Timing is a 2-stage hydraulically controlled cam phasing system. As engine technologies improve and become less expensive, (VVT) continues to improve performance and economy. Manufacturers have now adopted various (VVT) design […]
Valve guide wear refers to excessive clearance between valve stem and valve guide. As valve guides wear, the side to side movement can cause valves to seat improperly. Valve leakage causing compression loss is another […]
The purpose of the valve stem seal is to prevent the oil from the cylinder head entering the combustion chamber. Valve stem seal play a critical role in controlling valve lubrication as well as oil […]
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