Timing belt installation steps for EFI Great Wall Fengjun 52.8t diesel

Introduction Timing belt installation steps for Great Wall Fengjun 52.8t EFI diesel 1. Improper ignition timing has a great impact on the car. The combustion of gasoline in the engine must depend on the spark plug to get out of the fire.

Timing belt installation steps for EFI Great Wall Fengjun 52.8t diesel

1. Poor ignition timing has a big impact on the car. The combustion of gasoline in the engine must be ignited by sparks coming from the spark plug so that the engine starts smoothly and burns well, the spark sparks. The spark plug must be strong enough, but more importantly, the timing of the spark coming out of the spark plug must be appropriate and correct. Too early or too late will affect engine power. is what we call ignition timing. It is usually expressed in terms of the angle of rotation of the crankshaft before the piston reaches top dead center, for example 10° before top dead center, rather than in units of time.

2. Adjusting the ignition timing

1. Adjust the distributor power-off contact gap

The size of the contact gap not only affects the strength of the spark. , but also affects whether the contact opens and closes sooner or later. SIf you adjust the contact gap after adjusting the ignition timing, even a small change will occur. This will destroy the adjusted ignition timing, so the contact gap must be adjusted before adjusting the ignition timing, and the gap must be adjusted to the range of 0.35-0.40mm .

2. Find the top dead center position of the first cylinder compression stroke and loosen the first cylinder spark plug.

Slowly rotate the crankshaft. When you hear the deflating sound, it means that the first cylinder is on the compression stroke. Open the inspection hole cover on the flywheel housing, then slowly crank the crankshaft to align the timing mark.

3. If you have an octane selector, set it to the "0" scale position.

4. Determine the position where the circuit breaker contacts have just opened

Loosen the fixing screws of thedistributor shell, and first rotate the shell in the direction of the distributor axis to make both sides The contacts are in the closed position. Then turn on the ignition switch, and while rotating the distributor shell in the direction opposite to the distributor shaft, place the high voltage wire of the ignition coil facing the ground (about 2 to 3 mm) until 'to find sparks. Finally, tighten the distributor housing mounting screws.

5. Connect the high voltage wire according to the ignition sequence:

Reinstall the burner head and insert the high voltage wire from the first cylinder into the wiring hole aligned with the distributor cover and the conductive sheet of the burner head. Connect the high voltage wires of each cylinder in the order 1, 5, 3, 6, 2 and 4 clockwise.

6. Start-up inspection:

Start the engine and let it run at normal temperature, then accelerate brusqueak if the engine emits a brief, light knock at this time. disappears immediately, the ignition time is appropriate. If there is no knocking noise, that is, the ignition time is delayed, loosen the distributor housing mounting screw and rotate the distributor housing slightly in the opposite direction to the rotation of the distributor shaft. If the knocking noise is severe, i.e. if the ignition time is early, the distributor housing should be turned in the opposite direction as mentioned above until it is suitable.

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