How to adjust the valve clearance of Cruze?
2 Answers
There are two methods to adjust the valve clearance of Cruze: 1. Cylinder-by-cylinder adjustment method: According to the ignition sequence of the cylinders, after determining the position of a certain cylinder's piston at the compression top dead center, the intake and exhaust valve clearances of this cylinder can be adjusted. After adjustment, rotate the crankshaft and adjust the valve clearances of other cylinders step by step using this method. 2. Two-step adjustment method: Rotate the crankshaft to position the first cylinder's piston at the compression top dead center, aligning the flywheel mark with the inspection hole marking line. Cruze is a new-generation model developed by General Motors with the goal of creating a benchmark in design and performance for compact cars, integrating global resources. The models equipped with the 1.4T turbocharged engine and the 1.5L engine are labeled as '330T' and '320' respectively. This is also Chevrolet's second new car after the Equinox to adopt a three-digit number and letter naming suffix.
As a seasoned mechanic who's run a repair shop for decades, I must say adjusting the valve clearance on a Cruze is basic work, but it requires patience. Remember to perform the operation only after the engine has completely cooled down, or you risk burns. Use a wrench to remove the valve cover, located at the top of the engine. The Cruze's air intake design is quite standard, so don’t disassemble other parts unnecessarily. Measure the clearance with a feeler gauge—the standard value is usually around 0.25mm, but check the manual for specifics. Too tight, and you’ll hear a clicking sound; too loose, and you’ll lose power. When adjusting, loosen the screws, turn them slightly, fine-tune to the right fit, then tighten the nuts, checking each one again after adjustment. You’ll need a feeler gauge and a small wrench, and work gently to avoid dropping debris inside. After adjusting, reattach the cover, warm up the car, and listen to the engine sound—smooth and steady means you’ve done it right. This job can significantly extend the engine’s lifespan and improve fuel efficiency, so I recommend regular checks—don’t wait for strange noises to act.
