For 1990-2009 cars only
Symptom | Possible Causes | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Poor cold start | Injector deposits (1) | ||||||||
Poor warm up | Low volatility | ||||||||
Poor cold weather performance | Low volatility | ||||||||
Poor hot start | High volatility | ||||||||
Poor hot weather performance | High volatility | ||||||||
Vapor lock | High volatility | ||||||||
Spark knock/detonation | Low octane | ||||||||
Poor fuel economy |
| ||||||||
Excessive exhaust emissions |
| ||||||||
Reduced power |
| ||||||||
Rough/unstable idle | Injector deposits (1) | ||||||||
(1) Refer to Fuel System Deposits . | |||||||||
