At what bending value is the engine connecting rod considered bent?

[VonAiden]

An engine connecting rod is considered bent if the bending value exceeds 0.03mm. Manifestations of a bent connecting rod in the engine: After starting, the engine idles unevenly with shaking vibrations, the piston is misaligned, abnormal noises occur, cylinder leakage leads to insufficient cylinder pressure, and the engine experiences misfiring. Methods to check for a bent connecting rod: First, inspect whether the air filter is damp or coated with mud, and check for water traces on the air filter housing and intake pipe walls. Second, examine the engine oil condition to determine if water has entered the engine cylinders. If water has entered, the oil around the engine cylinder head and intake/exhaust valve seats will appear milky white. Third, inspect the piston and connecting rod to confirm water ingress. A broken connecting rod due to water in the engine cylinder will result in a very shiny piston top.