What is the valve adjustment method for the FAW Jiefang Aowei 11-liter engine?

[VanTanner]

Adjust according to each cylinder. Based on the firing order of the cylinders, determine which cylinder's piston is at the top dead center of the compression stroke. Then adjust the intake and exhaust valve clearances for this cylinder. After completing the basic adjustments, rotate the crankshaft to confirm the valve clearances of the other cylinders.

[SanAngelo]

Valve adjustment for the FAW Jiefang Aowei 11-liter engine was something I learned from a car-savvy friend. First, park the vehicle and let it cool for at least a few hours—never rush in, as a hot engine can cause burns. Then, open the hood and locate the cylinder head area, making sure to wear gloves for protection before starting. Next, rotate the crankshaft to position the first cylinder's piston at top dead center, which can be confirmed via the flywheel mark. After that, use a feeler gauge to measure the valve clearance, checking if it matches the manual's specified range (typically between 0.25 and 0.35 mm). If adjustments are needed, loosen the locknut with a wrench, fine-tune via the adjusting screw, and finally retighten the locknut. Remember to inspect each cylinder one by one. Once done, test-start the engine to ensure abnormal noises are eliminated. Regular maintenance like this improves fuel efficiency and extends engine life—but if unsure, always consult a professional repair shop, as improper handling may damage the valve train.

[ZaneDella]

Adjusting the valve clearance on the FAW Jiefang Aowei 11-liter engine isn't as difficult as I initially thought after doing it myself once. Before starting, make sure the engine is completely cold - I learned this the hard way when I burned my hand working on a hot engine. Locate the area near the cylinder head and prepare tools like a feeler gauge and wrenches. Rotate the crankshaft to a proper position, such as top dead center for cylinder one, align the marks, then measure the clearance with the feeler gauge. The manual specifies the clearance should be around 0.3mm - too small causes overheating, while too large creates loud knocking noises. When adjusting, gently turn the nut for fine-tuning and avoid excessive force. The whole process takes some time, but you'll notice significantly smoother engine response afterward. I recommend checking every 10,000-20,000 kilometers. Long-term neglect can lead to incomplete combustion or even engine damage. Safety first - beginners should bring an experienced friend for assistance.

[DeStephen]

Adjusting the valves of the FAWDE engine is essential for maintaining performance and safety. First, turn off the engine and let it cool down completely, waiting at least half a day. Wear gloves to open the cover, rotate the crankshaft to the appropriate position, typically the top dead center of the first cylinder. Once the position is confirmed, use a feeler gauge to measure and adjust the clearance to the specified value. Incorrect clearance can affect power output and may cause abnormal noises. Be careful not to damage any components during the process. Performing this adjustment regularly ensures smoother engine operation.