Cylinder Compression Test

Conducting a Cylinder Compression Test. Before conducting a compression test, disable the ignition and the fuel injection system if the engine is so equipped. Prop the throttle plate into a wide open position to allow an unrestricted amount of air to enter the cylinders during the test. Remove all of the engine's spark plugs.

Connect a remote starter button to the starter system. There are may types of compression gauges available. The screw in type tends to be the most accurate and easiest to use. Carefully install the gauge into the spark hole of the first cylinder.

Connect a battery charger to the car to allow the engine to crank at consistent and normal speeds needed for accurate test result. Depress the remote starter button and observe the gauge's reading after the first engine revolution. Allow the engine to turn through four revolutions and observe the reading after the fourth. he pressure from The reading should increase with each revolution. Readings observed should be recorded. Before removing the gauge from the cylinder, you can release the pressure from it using the valve on the gauge.

After testing all the cylinders. If one or more cylinders is much lower than the other, continue nder with testing those cylinder with the test. Squirt a small amount of oilring sealing into weak cylinder. Reinstall the compression gauge into that cylinder and conduct the test. If the reading increases with the presence of oil in the cylinder, the most likely cause of the original low readings was poor piston sealing. Using oil during a compression test is normally referred to as a wet test.

Parts of Whole Assembly Engine

Parts that composed the whole assembly of an engine are

Valves
Valve Spring
Valve Guide with Seal
Valve Spring Retainer
Rocker Arm
Push Rod
Camshaft
Cam Follower
Cylinder Head Gasket
Valve Seat Tensioner
Chain and Sprocket
Chain
Rocker Arm Cover
Piston
Piston Rings
Bearings
Connecting Rod
Piston Pin
Crankshaft
Flywheel
Oil Pump
Oil Seal
Oil Filter
Oil Strainer
Dip Stick
Water Pump
Fuel Pump
Intake Manifold
Exhaust Manifold
Cylinder Head Bolt
Ignition Coil
Contact Point
Distributor
Spark Plug
Starter Motor

Engine Parts

Engine is a device that can convert chemical energy to mechanical energy. Since this device works mechanically, it composed of several parts that work together during the operation. Parts are either stationary or non stationary, meaning some parts are moving and some are not moving. There are also parts that are fixed to the body yet have the vital role for engine operation. Engine can be divided into three main parts, the cylinder head block, cylinder block and oil pan. This means  an engine can be disassembled into three divisions. Each main part have several parts are attached to form as an assembly.

Cylinder block is the foundation of the engine. It is mostly made of cast iron or iron mixed with other metals such as nickel and chromium. Cylinder block has large holes for the cylinder bores. Attached to the block is the crankshaft, connecting rod, piston with rings, oil pump, water pump, timing gears, flywheel, bearings, oil seals, piston liners, camshaft in some engine and drilled oil passages with oil filter.

Cylinder head block is made of cast from cast iron or aluminum alloy. Parts attached to cylinder head block are valves, valve spring, valve guide, valve seat, rocker arm assembly, intake manifold, exhaust manifold, overhead camshaft, spark plug, fixed machined or drilled parts like water jackets, oil galleries, intake and exhaust ports.

Oil pan is made of plastic or metal. Pan is shape to fit the bottom of the cylinder block. Oil strainer and oil drain plug are attached to this part.