What are the reasons for excessive fuel richness in Honda vehicles?
1 Answers
Honda vehicles showing excessive fuel richness may have the following specific causes: 1. High fuel-air mixture ratio in the engine: This could be due to minor fuel injector leaks, malfunctioning coolant temperature sensors, or potential failures in the mass airflow sensor and oxygen sensor. 2. Insufficient cylinder pressure in the engine, with too small compression ratio: This can be identified by listening to the engine's performance and measuring cylinder pressure. Low cylinder pressure often indicates mechanical issues such as problems with pistons, rings, cylinders, or valves. 3. Weak spark with high voltage: Causes may include spark plugs with carbon deposits, small gaps, or poor performance, leading to electrical leakage or misfiring.