What are the symptoms of an air leak in a car engine?
1 Answers
An air leak in a car engine can result in increased exhaust emissions and reduced acceleration power. Here is additional information about engine air leaks: 1. Causes of air leaks: Clogged air filters or poor working conditions can allow sand, dust, and other particles to enter the valve guides, causing wear on the valve stems and guides. This leads to uneven wear between the valve heads and seats, compromising the seal and resulting in air leaks. Valve heads located in the upper part of the combustion chamber are constantly exposed to high-temperature, high-pressure gas, making them prone to erosion and leaks. Incorrect valve clearance adjustment, either too small or nonexistent, can cause the valve train components to expand when heated during operation. This may result in the rocker arm head pressing against the valve stem end, preventing the valve from closing properly and causing leaks. 2. Solutions: During maintenance, thoroughly clean carbon deposits in the cylinder, especially on the valve stems, valve seats, and seat openings. Carefully inspect the number of erosion spots and the width of the contact band on the valve cone surface. If the contact band is too wide or there are many erosion spots, use a reamer to adjust and lap the surface. If the valve seat ring is damaged, the valve head is warped, or the stem is bent, replace the valve or valve seat ring. If the issue is due to insufficient valve clearance, readjust the clearance to meet the required specifications.
