Multifunctional cylinder pressure gauge for automobile and motorcycle dual-purpose cylinder pressure gauge for gasoline engine

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

2. Loosen all the spark plugs by one or two, and start the engine (but do not let the engine start) for 5-10 seconds. This will disperse the spark plug base turnover dust and prevent it from falling into the cylinder.

3. Carefully remove all spark plugs. Visual inspection of the spark plugs can find many problems. For example, the spark plug is oily, indicating that the piston ring is broken or the valve guide is worn, and the spark plug burns out indicating vacuum leakage.

4. Fully open the carburetor throttle valve and see if the result is the same.

5. When using the starter to drive the motor, press the pressure gauge rubber refractory cone tightly against the spark plug hole.

6. Use the starter to drive the engine until it passes through 4 compression strokes. each compression stroke, a slight guanidine occurs in the measured value. Pay attention to the first stroke and the fourth stroke to ensure that the battery is fully charged. The starter is in good condition and drives the engine at normal speed. Using the starter with the engine too slow will get to wrong results.

7, read the gauge , pull down the cone end of the air valve to reduce pressure.