Why is my EFI running rich?
Why is my EFI running rich?
The three most likely causes of a rich running EFI engine are: 1. A faulty coolant temp sensor that is telling the ECM that the engine is cold when it is hot. 2.
What causes a Ford Ranger to run rich?
Idle Issues – Your Ranger may run rich or lean when idling, or it may also idle erratically. A rich condition is when there is not enough air relative to the fuel in the air/fuel mixture. The exhaust color is usually darker when running rich.
What does it mean when your car engine is running rich?
Typical gasoline engines use an air to fuel ratio of 14.7:1. However, inefficiencies can cause more fuel to be supplied to the engines. When this happens, we say the engine is running rich. Having a car that is running rich means you are spending a lot on fuel. Modern engines now come with onboard computers that regulate the fuel/air mixture.
How can I tell if my engine is lean or rich?
Also, each bank has it’s own fuel trim reading. If your engine is a 4 cylinder, then it has only one bank, Bank 1. On a V-style engine you can isolate which bank is running rich or lean by watching that bank’s fuel trims.
Where does the fuel injection code go on a Ranger?
SERIES FUEL/AIR INJECTION CODES ON VEHICLES WITH DUAL OXYGEN SENSORS REFER TO THE LEFT OR FRONT SENSOR. EXCEPT: 1984-1988 3.8L ENGINE S: RIGHT SENSOR
Idle Issues – Your Ranger may run rich or lean when idling, or it may also idle erratically. A rich condition is when there is not enough air relative to the fuel in the air/fuel mixture. The exhaust color is usually darker when running rich.
How to know if your engine is running rich?
7 Symptoms of an Engine Running Rich. 1 Check Engine Light. 2 Fuel smell from exhaust. 3 Constantly refilling your gas tank. 4 Poor engine performance. 5 Black smoke from the exhaust. 6 Sooty spark plugs. 7 High carbon monoxide content.
SERIES FUEL/AIR INJECTION CODES ON VEHICLES WITH DUAL OXYGEN SENSORS REFER TO THE LEFT OR FRONT SENSOR. EXCEPT: 1984-1988 3.8L ENGINE S: RIGHT SENSOR
What causes a Ford Ranger to jerk when going down the road?
And when it does, it doesn’t usually run very well. Jerking – As you go down the road, you’ll feel your Ranger really jerk and hesitate as the engine speed changes erratically. It’s bad for your motor mounts when this happens. Also, jerking can be caused by bad spark plugs or coil packs.
