Instructions for use:

Remove a spark plug, connect the cylinder pressure gauge, connector connected to the spark plug hole. To the measured engine car engine cylinder pressure to determine whether it is normal or there is a problem with reference to checking the adjacent cylinder two-cylinder compression pressure than the standard value of the same value low, then it is burned cylinder head gasket or cylinder head cylinder bed flat injustice caused by poor air tightness.

1, use: dedicated to checking the size of the cylinder pressure gas compression equipment.

View on YouTube 2, use:

(1) Start the engine and operate to normal operating temperature, after the flame and wait for the engine is stopped, remove all the spark plugs;

(2) full-throttle, the pressure gauge connection head pressed against the spark plug hole;

(3) motor driven engine to 100-150r / min rotation speed for 3-5 seconds. The pointer on the meter will gradually increase, to a certain value will stop, when the indicated value is the cylinder compression pressure;

(4) Press the button, so the pointer to zero;

(5) in the previous step, repeated measures 2 to 3 times, in order to improve measurement accuracy.

(6) General car cylinder pressure> 0.9MPa, and ¡÷ <8% (each cylinder pressure difference, the gasoline engine does not exceed 8% of the average pressure of each cylinder). As the measured value is less than the predetermined value, and the intake system properly, can explain the cylinder and the piston, cylinder head there is a leak, the possible original cylinders, pistons, valves, piston ring wear and tear, erosion and other adverse conditions. As measured value is greater than a predetermined value, and intake and exhaust system is normal, possible causes severe combustion chamber volume.

Instructions for use:

1; Start the engine until it reaches normal operating temperature.

2; to release all of the spark plug or two laps to drive the engine starter (but do not allow the engine to start) for 5-10 seconds, it will disperse dust around the base of the spark plug to warrant fall into the cylinder.

3; Carefully remove all the spark plugs, visually inspect spark plugs can find many problems, such as: a spark plug with oil, indicating a bad piston rings or valve road tube worn out spark plugs burned described vacuum leak.

4; carburetor throttle fully open, to see whether the result of the case.

5; with starter drive engine, the pressure gauge rubber cones tightly pressed refractory plug hole.

6: drive engine starter until compression stroke by four on each compression stroke, measurements have a slight pulsation, Note that the first stroke and the fourth stroke readings to ensure the battery has enough power, starter. in good condition and at a normal speed and drives the engine. driven by the engine speed is too slow starter, it will lead to erroneous results.

7; readout meter reading position, pull down the cone end of the purge valve with reduced pressure.

Result:

In the following cases, the engine in good condition:

a. The first stroke of 50-70 lb / hr (PSI)

b. The final stroke of the technical conditions within the rated range.

c. the difference between the number of cylinders is less than the nominal margin.

Note: The difference between the cylinders shall not exceed 10-15PSI (for Ford, the minimum value should be less than 3/4 of the maximum value of 70%)

Indicates engine Frequently Asked Questions:

a. low pressure and pressure of the first stroke on each stroke cumulative 10-20PSI, described valves or valve seat clamp burned out.

. b a cylinder or all cylinders pressure is low: a small amount of oil into the cylinder, piston rings or cylinder walls to check for damage. Driven by the engine with the starter several times repeated compression test. If we can, it shows the piston rings or cylinder walls damaged, or oil sealed piston ring small slatted four weeks. If the result is still very low, then the problem lies in the valve or cylinder head gasket. If only trace raise, then piston rings, valves, or cylinder head gasket bad, it could have three bad.

c. higher than normal due to the cylinder pressure is caused by excessive carbon deposits.