What are the common causes of a rich fuel mixture in Honda vehicles?

[DiDamian]

Honda rich fuel mixture specific reasons are as follows: 1. High engine fuel mixture ratio: This may occur due to slight injector leakage, faulty water temperature sensor, or potential malfunctions in the air flow meter and oxygen sensor. 2. Insufficient engine cylinder pressure with too small compression ratio: This can be identified by listening to engine performance and measuring cylinder pressure. Low cylinder pressure is typically caused by mechanical issues such as problems with pistons, rings, cylinders, or valves. 3. Weak high-voltage spark: Causes include spark plugs with carbon deposits, small gaps, poor performance, or issues like electrical leakage and misfiring.