i am having problems getting my car through because my hydro-carbon levels are very high. so i was wandering what could the problem be
Aug 25, 2011 at 4:17 PM
FACTORYJACK
✓Experienced Mechanic
4,159 POSTS
High hydrocarbons are most often caused by unburned fuel. Do you have a check engine light on indicating a fault. The problem could be a catalyst that is not working properly, excessive fuel saturated oil(crankcase vapor), faulty oxygen sensor(s). Before you go throwing any parts at it, the basic maintenance needs to be assessed. Then having the problem diagnosed hands on, would be a suggestion.