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Can fuel injectors cause high idle?
On a fuel injected motor, a vacuum leak can cause the engine’s RPM at idle to increase. The result is that the engine’s idle speed is increased. Most mechanics typically look for a vacuum leak first when they have a customer that has a high engine idle speed issue.
How do you adjust the idle on a fuel injected motorcycle?
On some fuel-injected motorcycles, there is a knob sticking out the side of your bike near the engine compartment. You can just turn this knob clockwise or counterclockwise to adjust the idle speed.
Why would a motorcycle idle high?
A motorcycle idles high when it is getting too much of an air and fuel mixture in a low speed or neutral position. This is usually caused by the idle screw on the carburetor being out of adjustment, an out of place throttle handle screw, a bad carburetor throttle spring, or a sticky throttle or throttle cable.
What causes a motorcycle to not idle?
Carbon, oil residue and pitting on the spark plug electrodes will cause a weak or inconsistent spark, resulting in poor ignition and an inconsistent idle. A clogged air filter may not allow a sufficient amount of air into the combustion chamber, contributing to a rough idle.
Is it bad to let my motorcycle idle?
Letting a motorcycle idle is not bad provided that it is not done excessively. Liquid cooled motorcycles can tolerate idling better compared to air cooled motorcycles and temperature should be considered when it comes to letting an air cooled engine idle.
What’s the idle speed on a fuel injected Harley?
Clean Throttle When you first start a fuel-injected Harley Davidson, the idle speed may seem kind of high. But this naturally happens to get the engine hot quickly in the Fuel injected system.
How is the idle level of a motorcycle controlled?
The same system is used on the first generations of fuel injected motorcycle engines. On the newer fuel injection systems, the throttle valve is controlled but a small stepper engine, and it is the fuel injection ECU (a computer) that is controlling the idle level.
What does fuel injection do to a motorbike?
Haley Davidson’s newer models now use Fuel injection systems for their motorbikes. The Fuel-injected motorbikes generally come up with higher idling. As those manufacturing factories set the appropriate idle for these motorbikes and control them electronically, the idle adjustment process is quite different from those previous motorbikes.
Can a fuel injected motorcycle Rev to 6000 rpm?
At idle the throttle plate should be almost closed with only a very small gap for mixture to pass through. With this high vacuum there is no way that the engine would rev to 6000 rpm. I would look at the rubber intake manifold and also the throttle body itself to confirm the plate is closing correctly and secure.