1988 Porsche 924 Repair Question
Topics covered: Emissions, Exhaust, Compression.
Mileage: No information provided.
Mileage: No information provided.
Asked on May 29, 2009
Failed my emissions what can i do?
1988 Porsche 924 4 cyl
my car failed it emissions. The paper said it failed because the CO2 emissions. Is there any things that i should check that could help this?
my car failed it emissions. The paper said it failed because the CO2 emissions. Is there any things that i should check that could help this?
Asked by miss.devaultAnswer
Replied on May 29, 2009
As combustion efficiency decreases, the oxygen content in the exhaust rises and carbon dioxide CO2 falls. An engine that is running at a nearly ideal air/fuel ratio of 14.5:1 will show about 14.5 percent carbon dioxide and 2.5 percent oxygen in the exhaust. CO2 readings of less than about 13 percent and oxygen readings greater than about 4 or 5 percent indicate poor combustion efficiency. This translates to an over-rich or over-lean air/fuel ratio, poor compression, or an ignition problem
