How to adjust the valves of a six-cylinder engine 1236710?

[AnaDella]

Here is the relevant information on adjusting the valves of a six-cylinder engine 1236710: 1. If the engine's firing order is: 1-5-3-6-2-4, then you only need to position cylinder 1 at top dead center (TDC) of the compression stroke. 2. Adjust the intake and exhaust valves of cylinder 1, the intake valve of cylinder 2, the exhaust valve of cylinder 3, the intake valve of cylinder 4, and the exhaust valve of cylinder 5, totaling six valve [sets]. 3. Then position cylinder 6 at TDC of the compression stroke. Starting from cylinder 6, adjust the intake and exhaust valves of cylinder 6, the intake valve of cylinder 5, the exhaust valve of cylinder 4, the intake valve of cylinder 3, and the exhaust valve of cylinder 2. [This can be remembered with the mnemonic: intake, exhaust; intake; exhaust; intake; exhaust.] 4. If the firing order is 1-4-2-6-3-5, then the valve adjustment sequence is recorded as exhaust, intake; exhaust; intake; exhaust, intake.

[Francisco]

Last year, I worked on an old six-cylinder car, and adjusting the valve clearance was quite a test of patience. The entire process is based on the engine's firing order, such as 123 or standard sequences like 1-5-3-6-2-4, which varies by model. The first step is to turn off the engine and let it cool to avoid burns, then locate the firing order diagram to confirm the starting point. Usually, by rotating cylinder No. 1 to the top dead center position on compression, you can safely adjust some of the valves. Use a feeler gauge to measure the clearance; typically, the intake valve clearance is between 0.2-0.3 mm, while the exhaust valve is slightly larger. Too much clearance can cause noise and wear, while too little can burn the valve and affect combustion efficiency. Then, rotate the crankshaft about half a turn and follow the sequence to adjust the next cylinder until all six are done. The tools required are simple—just a wrench, feeler gauge, and manual—but over time, it's easy to forget steps. I once missed a step and nearly damaged the camshaft. Regular adjustments can improve fuel efficiency and horsepower, especially for older cars, which should be checked every two years to prevent carbon buildup.