What would a high HC low CO and high o2 at the same indicate?
Likewise, what causes high HC and CO?
Ignition defects including dirty spark plugs, leaking or open-circuited spark plugs or wires, or defective ignition coils can all result in a shortage of spark energy. Any shortage of spark energy may cause high HC emissions. If the spark occurs at the wrong time, incomplete combustion and high hydrocarbons may result.
Subsequently, question is, how do you reduce HC emissions? Lean burn spark engines are a promising technique to further reduce both NOx and hydrocarbon/carbon monoxide (HC/CO) engine emissions. Higher lean burn levels improve HC/CO oxidation while simultaneously reducing NOx formation. The NOx reduction is due to cooler flame temperatures.
In respect to this, what does high HC ppm mean?
A high HC reading means the test found high HC (hydrocarbons) in your emissions. In other words, too much gas is left in the exhaust after combustion.
What are the 3 most leading failures of a catalytic converter?
Check out these three common causes of catalytic converter problems.
- Unburned Fuel. Heat can be damaging to almost any engine component, so it's no surprise that it's one of the most common causes of catalytic converter failure.
- Coolant Leaks.
- Oil Consumption.