because the computer is delivery to much fuel due to the dirty filter needing more pressure to run the car
The check engine light comes on when the computer has detected a problem with the emissions system. The engine maintenance light comes on when the engine needs some scheduled maintenance such as an oil/filter change.
change a pollen filter
The 2000 Ford Focus Owner Guide shows : with engine oil filter change : ( 3.78 liters ) for the SPI engine ( 4.25 liters ) for the ZETEC engine
Change the fuel filter.
When you change the oil and oil filter.
Change the spark plugs and check all fluid levels, change oil, filter and AIR filter. Don't forget to rotate your tires. Don't you have an Owner's manual?
There is no air filter on this model.
When you change the oil and oil filter.
According to the 2006 Ford Focus Owner Guide : For the 2.0 and 2.3 liter four cylinder engines : With engine oil filter change : ( 4.5 U.S. quarts / 4.3 litres of engine oil )
According to the 2008 Ford Focus Owner Guide : With engine oil filter change : ( 4.5 U.S. quarts / 4.3 litres of 5W-20 )
I was looking in the 2006 Ford Focus owners manual and it shows that the air filter is a non - serviceable part . The air filter is designed to last the life of the vehicle . A Ford technician can check the diagnostic system to see if there is a possibility of an excessively dirty air filter
Fuel filter clogged, probably. We've had about 6 filters installed in 4 years.