When the check engine light is on the computer has information that you should know. Connect a code scanner to find out why and most likely it will tell you what is causing the rich burn condition.
If it is CFI, the fuel pressure regulator could be leaking fuel. If the check engine light is on, have the codes read.
That depends entirely on the reason why the check engine light is on.
A clogged or defective fuel filter will very likely cause a check engine light. If it is suspected, it should be replaced.
On a 2002 Ford Expedition : The " check engine " light is the " SERVICE ENGINE SOON " light just to the left of the fuel gauge
Check engine light, low power, increased emissions, poor fuel economy,Check engine light, low power, increased emissions, poor fuel economy,
No, only a problem that effects emissions will set the check engine light.
Anything that could cause a cylinder misfire can cause the check engine light to flash. A restricted fuel filter is one.Anything that could cause a cylinder misfire can cause the check engine light to flash. A restricted fuel filter is one.
Yes
Using contaminated fuel can cause an engine misfire which will turn on the check engine light. A faulty gas cap can for sure turn on the light.
It messes up your fuel economy therefor burning more gas and will also trip your check engine light. It may have a smell to it and run a bit crappy.
IS the check engine light on? The computer has the capability of putting the car in a "limp home mode" if somethign is wrong. If no check engine light, your fuel filter may be clogged and blocking fuel or the fuel pump is getting weak.
Yes, a defective fuel cap will make the check engine light come on. It will alert the car that its not getting good gas mileage.