How to adjust the ignition timing of the gasoline engine water pump

1. Gasoline engines are generally magnetomotor structures, and most of them reserve ignition timing adjustment on the flywheel, and play ignition on the flywheel to scale in advance. Find these and then loosen the fixing points, and adjust the ignition of the electric platinum wire.

2. Ignition timing: At the end of the compression stroke of the engine and when the piston reaches the apex of the stroke, the ignition system provides high-pressure sparks to the spark plug to work on the compressed mixture in the ignition cylinder, which is the ignition timing. In order to maximize the ignition energy, the ignition timing should generally be advanced by a certain amount, so it is ignited at the moment when the piston is about to reach the top dead center, rather than just when the top dead center is reached, and this advance amount is called the ignition advance angle.

These small gasoline engines are generally magneto structures, and most of them reserve ignition timing adjustment holes on the flywheel, and many of them also have ignition advance scales on the flywheel. You can find these first, and then loosen the screws that fix the electric platinum and adjust the ignition platinum.

What you want to say is that the valve clearance should be aligned, you can remove the spark plug and insert a screwdriver, you can push it to the piston, pull the starter, and the piston will pull it to the highest point, and that point is the ignition point, if it's simple, it's just a direct pull plate, and it's a bit of a stuck, and I don't think you'll use the first troublesome method.

Open the distributor cover, check and adjust the platinum contact clearance, its value should be between one.

Remove the spark plug from one cylinder of the engine, press and hold the spark plug hole with your finger, and rotate the crankshaft to observe the timing pointer fixed on the timing gear chamber cover.

Loosen the platen bolts for the distributor.

Turn the distributor housing clockwise to close the platinum contacts.

Turn on the ignition lock power.

Slowly turn the distributor housing counterclockwise until the contacts have just opened, and if you look closely, you can see that a tiny electric spark occurs when the contacts are just opened.

Fix the distributor pressure plate bolts.

Install the top cover and spark plug of the double distributor.

Whether the ignition system performs well or not has a great impact on the engine's power, fuel consumption and exhaust pollution. All devices capable of generating an electric spark between the two electrodes of the spark plug are called engine "ignition systems". It usually consists of a battery, a generator, a distributor, an ignition coil and a spark plug, etc.

There are four steps in the adjustment of the four-cylinder engine: first: prepare the tools: hand crank, open-end wrench, flat screw, feeler gauge, measuring tool, etc. Second: Remove accessories such as valve chamber covers. The third sail: check and adjust the valve clearance: 1. Judgment.

1. The four-cylinder piston is at the position of the top dead center of the compression stroke; 2. Use the two-time adjustment method to adjust the valve: shake the crankshaft to make the first cylinder at the top dead center position of the compression stroke, adjust the air and tong door clearance according to the working order of "double, row, no, in" and the engine, and then shake the crankshaft to make the piston of the fourth cylinder at the top dead center of the compression stroke, and then adjust the valve clearance of each cylinder according to the "double, row, no, in". 3. Then use the feeler gauge to check the value of the valve clearance.

Fourth: install accessories such as re-valve chamber covers.

The ignition time of the diesel engine cannot be adjusted. The fuel of the diesel engine is sprayed into the combustion chamber under high temperature and high pressure and burns by itself, if you want to adjust, you need to adjust the angle of the fuel supply advance, and observe the crank angle of the compression top dead center of a cylinder when the high-pressure oil pipe is fed by rotating the angle of the high-pressure oil pump.

When the plunger rises to the "upper point" and moves downward, the inclined groove of the plunger will touch the sucking mouth again, and the diesel fuel will be sucked into the plunger sleeve again, and the repetition of the above actions will be repeated by the heavy Morino again, and each group of plunger systems of the in-line fuel injection pump corresponds to a cylinder, and the four cylinders have four groups of plunger systems, so the volume is large, and it is mainly used for medium-sized and above cars.

Nowadays, many cars have ECU computer boards that do not need to adjust the ignition timing, and the old-fashioned ones are still available: 1) First of all, adjust the contact clearance of the distributor to the appropriate one according to the requirements.

2) Find the position of the top dead center of the first cylinder compression. Remove the high-pressure distribution line of the next cylinder. Remove the first cylinder spark plug with a spark plug sleeve, plug the spark plug hole with your thumb or cloth ball, and shake the engine crankshaft.

When you feel the resistance of the cylinder, slowly shake the crankshaft and observe at the same time to align the timing mark.

3) Adjust the current distribution to the moment the contact is closed. After the above parts meet the requirements, turn on the ignition switch, loosen the fixing screws of the distributor shell, and turn the distributor shell to close the contact. Then the distributor is rotated in reverse until the distributor contact is just opened, and a small electric spark can be seen between the contacts at this moment, and then the fixing screw of the distributor shell is tightened, and the octane number is adjusted to the position of zero scale; At this time, the direction pointed by the fire splitter head is the position of the cylinder.

4) Plug in the high-voltage distribution wire on the distributor cover in the ignition order, tighten the screws by hand, and temporarily fix the distributor.

5) When starting the engine to check the ignition timing, if the engine ignition system and fuel supply system are well adjusted at this time, the engine exhaust pipe should be dripping, and the engine vibration and noise should be minimized.

Abstract: Ignition timing must be carefully carried out after a period of use in gasoline engines, as well as after replacing the platinum contacts of the distributor and adjusting the contact clearance. The specific methods and steps are as follows:

If there is a mark on the engine, there are two points on the line

The adjustment method of ignition timing is:

l) To adjust the contact clearance of the breaker, the contact clearance of the breaker should be adjusted first. Because the size of the contact gap of the breaker not only affects the strength of the high-voltage spark, but also affects the ignition time.

When the gap between the contacts of the breaker is large, as soon as the cam is contacted, the contact of the breaker is opened, the ignition time is advanced, and the closing time of the breaker contact is shortened, so that the primary current is reduced, the secondary voltage is reduced, and the spark plug electric spark is weakened. On the contrary, the contact gap of the breaker is small, and the ignition time lags.

2) Shake the piston of the first cylinder to the position where the ignition begins at the end of the compression stroke (according to the mark on the flywheel or the control screw of the timing gear cover. There is a protruding part of the center at the end of the distributor shaft, and it should be noted that it is correctly embedded with the recessed part of the center, that is, the ignition timing position), at this time, the position of the distributor cam should be just the contact jack open, and the electrode of the fire distributor head is opposite to the distribution electrode of the first cylinder.

3) Loosen the clamping bolt of the distributor shell, rotate the distributor shell, first close the contact of the breaker to eliminate the gap, and then rotate the shell along the direction of rotation of the distributor shaft, so that the contact of the breaker is just opened, and the shell can be fixed.

4) Install the distributor head and distributor cover, and insert the first cylinder high-voltage wire in the plug-in hole pointed by the distributor.

5) According to the specified ignition sequence, plug in the high-voltage lines of the remaining cylinders along the rotation direction of the distributor shaft.

6) Start the engine to make the water temperature rise to 70-80, and then suddenly open the carburetor throttle to accelerate easily, and you can hear a slight metal knocking sound. If there is no knocking sound and acceleration is difficult, it means that the ignition is too late; If there is a sudden acceleration and the metal knocking sound is obvious, it means that the ignition is too early and should be adjusted again. At this time, the distributor shell can be rotated or the adjustment nut can be rotated to make the distributor reverse to ignition advance or make the distributor turn to ignition delay.