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Q what causes an engine to run lean
WinifredWat
DaveMaggie Release Time: July 4, 2024, 10:17 AM
An engine runs lean when the air-to-fuel mixture has too much air or not enough fuel. This imbalance can result from various factors such as vacuum leaks, which allow additional air to enter the intake system, a clogged fuel filter reducing fuel supply, or a malfunctioning fuel injector unable to deliver the appropriate amount of fuel. Faulty oxygen sensors and air mass flow sensors can also misread air intake, leading the engine control unit (ECU) to adjust the mixture incorrectly. Running lean not only reduces engine performance but can cause overheating and potentially damage the engine. To prevent these issues, regular maintenance checks and addressing any signs of fuel system problems promptly are essential.
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Q how to measure engine bore
GeraldArthur
DaveMaggie Release Time: June 29, 2024, 11:55 AM
Measuring the engine bore is a critical process to assess the diameter of the cylinders, crucial for engine rebuilding or tuning. This is done using a dial bore gauge or a telescopic gauge along with a micrometer. Firstly, ensure the engine is accessible and clean to get accurate measurements. If using a dial bore gauge, you must set it to the desired bore size, using a micrometer for precision. Insert the gauge into the cylinder and take the measurement from the gauge’s readout, ensuring to measure at multiple depths and angles (top, middle, bottom, and both sides) since cylinders can wear unevenly. For a telescopic gauge, it’s placed within the bore, then carefully removed and measured with a micrometer. Accurate bore measurements help in selecting the right piston size and ensuring the engine operates efficiently. Always refer to the engine’s specifications for the correct bore size and tolerance levels to maintain engine integrity.
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