How do you reset a Harley ECM?
Turn off the ignition and click the “Run/Stop” switch to “Run.” Press and hold the odometer reset button. Turn the key to ignition and let go of the odometer reset button. The cluster will illuminate and the odometer will read the word “Diag.”
What causes a car engine to backfire when the injector wears out?
Usually, when an injector clogs or wears out, causing the air-fuel mixture to lean, the combustion process weakens and fails to properly burn the fuel. Too much unburned fuel then enters the exhaust system where the fuel ignites with a loud bang.
What causes a backfire through the intake valve?
The manifold’s job is to provide a mixture of air and fuel to the engine’s cylinders. To do this, the intake valve opens to draw gas and air into the engine. After opening, the valve closes to keep this air and fuel combination trapped inside. Backfiring is a small explosion.
Why does backfiring on a Harley Davidson cause a fire?
Excessive backfiring can also emit small flames from the exhaust, which can cause a fire. Many of the Harley-Davidson’s that have excessive backfiring have bad mileage because the fuel is being wasted. The fuel is supposed to be ignited inside the bike’s combustion chamber.
What causes a Chevy 350 to backfire when idle?
If a main vacuum hose such as the power brake booster feed line has broken or failing off it will cause a lean backfire due to the additional air allowed into the engine intake manifold. This problem will be accompanied by high or low engine idle and a harder to push brake pedal than normal.
Usually, when an injector clogs or wears out, causing the air-fuel mixture to lean, the combustion process weakens and fails to properly burn the fuel. Too much unburned fuel then enters the exhaust system where the fuel ignites with a loud bang.
If a main vacuum hose such as the power brake booster feed line has broken or failing off it will cause a lean backfire due to the additional air allowed into the engine intake manifold. This problem will be accompanied by high or low engine idle and a harder to push brake pedal than normal.
Excessive backfiring can also emit small flames from the exhaust, which can cause a fire. Many of the Harley-Davidson’s that have excessive backfiring have bad mileage because the fuel is being wasted. The fuel is supposed to be ignited inside the bike’s combustion chamber.
What causes a fuel intake back fire explosion?
An intake back-fire explosion can be caused by the fuel air mixture being to lean when the engine is demanding power. Every internal combustion engine runs on a mixture of 14 to 1 which is fourteen parts air to one part fuel. Proper fuel pressure is needed to atomize the fuel correctly when it leaves the fuel injector to complete the burn process.