Adjustment of engine valves 4216 "Gazelle": procedure, work technique, necessary tools and expert advice

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:41

Car enthusiasts can do without the services of specialized car repair shops if it is necessary to adjust the valves of the 4216 Gazelle engine. Consider how this is done with your own hands in a garage environment. This information will be useful for every car enthusiast.

Regulate for what?

They are usually tuned to make the engine run more stable in any speed range. Valves are a very important part of the gas distribution mechanism. If the gap setting is lost, then the wear of various parts in the timing increases significantly. The noise of the power unit increases, fuel consumption increases, which is very important for commercial vehicles.

If a ringing is heard during engine operation, if it becomes more difficult to start a cold engine, and when a cold start is filled with fuel, then it's time to adjust the valves of the 4216 Gazelle engine.

The gaps are confused for the following reasons. This is a failure of the engine crankshaft, the wrong moment of operation of the cams in the gas distribution mechanism. Also, the gaps go away if there are various violations of the integrity of the engine block.

The reason for the increased or reduced clearance may be the driving style of the driver. If the driver prefers aggressive driving, which is expressed in a sharp release of the clutch, then this necessarily leads to intensive and premature wear of the timing mechanism parts.

Tools for the job

To adjust the gaps you will need a minimum set of tools. These are keys and a screwdriver, which is needed to dismantle the valve cover. You should also look for gap feeler gauges.

They are sold in any auto shop for 200-300 rubles. You will also need a ratchet key and a long slotted screwdriver. The latter is needed to determine the position of the cylinder.

Preparatory operations

Despite the fact that the valve adjustment of the 4216 Gazelle engine is relatively simple, you need to understand that the process is very responsible. The machine must be carefully prepared before adjustment work.

First of all, the car must be fixed. Don't trust the handbrake alone. It is better to additionally secure the chocks. Then, if the engine is hot, it is allowed to cool. The motor must be completely cold.

Before starting work, you need to get to the valve mechanism. On thethis is relatively easy to do on injection engines, but more difficult on carbureted engines.

First you need to remove the air filter:

1. First of all, remove the filter cover, then unscrew the fixing nuts.
2. The vacuum ignition corrector hose and the breather pipe are also removed.
3. Next, the rods are disconnected from the carburetor - they will greatly interfere.
4. Finally, the valve cover comes off.

This completes the preparatory work and you can go directly to adjusting the valves of the 4216 Gazelle engine.

Valve adjustment

All operations must be carried out with maximum quality. In order not to make mistakes during work, you can consult experienced mechanics. It should be noted that it will be possible to correctly adjust the valves only if the engine temperature is not more than 15-20 degrees. If the car has been used before and the engine is warm, then you need to cool it. If this is not done, then the valve clearance will increase by about 0.1 mm - this is a lot.

In what sequence should I set the valves on the Gazelle?

There is a strict procedure for adjusting the valves of the 4216 Gazelle engine. The cylinders work in the following order - 1, 2, 4, 3. If the first is in the TDC position, then you can adjust or measure the clearances on 1, 2, 4, 6 valves. After turning the crankshaft 180 degrees, adjust 3, 5, 7, 8 valves.

Gaps within 0.35-0.4 mm are considered normal. Atthis should be borne in mind that in the first and fourth cylinder the gaps should be larger - 0.3-0.35. Practice shows that a gap of 0.35 mm is best suited for all valves. Experts say that the size of the gap does not really affect the operation of the engines and its resource.

How to regulate?

When all the preparatory work is done, you need to go directly to the setup. The piston in the first cylinder must be set to TDC on the compression stroke. The valves are closed at this point. They try to insert a probe between the pusher and the valve. If it passes very easily, or vice versa, it does not climb at all, adjustment is needed. To do this, the locknut is loosened and held with a wrench. By turning the adjusting screw, the desired clearance is achieved. Thus, the valves of the UMZ-4216 Gazelle engine are adjusted for the 2nd, 4th and 6th elements. After the gaps are adjusted, you must not forget to tighten the lock nut.

Next, the crankshaft is rotated 180 degrees, and access to 3, 5, 7 and 8 valves will open. After these elements have been adjusted, turn the motor again and check the gap with a feeler gauge. This will ensure that the valve adjustment of the 4216 Gazelle engine is correct.

UMZ-4216 with hydraulic compensators

It is believed that on engines with hydraulic lifters, no valve clearance adjustment is needed. But this is not about this engine.

On this unit, the valves are never released and are constantlyclamped. In order to determine which elements can be customized, you need a flat bar. It is installed between the third and fourth valves. With the help of the bar, you can see the slope to one side. From this slope, you can understand if the valve is stuck. If the bar is inclined towards the fourth valve, then it is weakened, and to the third it is clamped. This will indicate that the valve adjustment of the 4216 Gazelle engine with hydraulic lifters will begin from the first cylinder. The first, second and fourth valve can be adjusted.

To adjust, first unscrew the nut. Then the bolt is unscrewed until the hydraulic compensator stops pressing on it. On the inlet valve, make one turn of the screw, and on the exhaust - two and a half turns.

After such valve adjustment, the 4216 Gazelle Business engine starts to run much quieter. And the work itself becomes softer. For those whose Gazelle runs on gas, such an adjustment is simply necessary. As for mileage and the need for tuning, everything is individual here and depends on the style of operation of the car. Often the interval is about 15-20 thousand kilometers. But if the engine began to emit a characteristic clatter, valve adjustment may be required earlier. Therefore, it is better to prevent this problem.

Conclusion

As you can see, adjusting the valves of the 4216 Gazelle engine with an injector or carburetor is really not a very complicated procedure that an ordinary motorist can perform. This will help you save a lot on repairs andon fuel further.