Question about Motorcycles
I have a 97 fuel injection x police bike the has the evo motor. It has just recently developed a fast idle problem when sitting at a light.
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Posted on Jan 02, 2017
SOURCE: fuel pump?
the fuel pump for your 2000 fuel injected road king is located in the fuel tank. you will have to remove the speedometer housing, by first removing the seat, then remove the one small screw near the seat that holds the speedometer housing in place, also remove the small screw at the front of the speedometer housing and lift the housing off the tank and disconnect the wiring that goes to the back of the speedometer. there is a large oval shaped gold in appearance plate on top of the fuel tank. this plate is what the fuel pump is mounted to.
Posted on Mar 31, 2009
Sounds like the intake manifold is leaking. The area where the leak usually happens, are those two rubber sleeves that go from the heads, (Cylinder heads) to the intake. Sometimes the clamp/s loosen up. Sometimes these rubber sleeves deteriorate, and cracks form.
This makes the engine backfire, pop, and idle fast.
The added air at the wrong time cause a backfire, when you let off the throttle. The added air causes the engine to pop, because the exhaust valve has sucked up some cold air.
The engine idles fast, because more air is being introduced, and not metered by the injection system.
(The exhaust valve thing. Exhaust valves are supposed to open, and let exhaust out right? Well there is a thing called Valve Overlap.
The Exhaust valve hasn't closed all the way yet, and the Intake valve is opening.
The 4 stroke engine, (Of which a Harley is), has these four strokes.
1.Intake Stroke. Fuel/air is sucked in.
2.Compression Stroke. The piston comes up and squeezes the fuel/air mixture.
3.Combustion Stroke. The spark plug lights the fuel/air mixture off.
4.Exhaust Stroke. The spent gases are expelled out.
Your Road King has one camshaft. There are four cam lobes on it.
Intake, Exhaust, Intake, Exhaust.
If you had the camshaft in your hand, and had the gear end facing you, look down the camshaft. You will see those egg shaped cam lobes. You will notice that No.1 cylinder Intake lobe is facing to the left.
No.1 Exhaust is facing to the right.
If you put a degree wheel on the gear end of the camshaft, and had the No.1 Exhaust lobe ramp nose facing straight up, you would see that it's about 110 degrees, before the Intake lobe ramp at .050 lift, comes into play. (The roller, of your roller lifter has raised the Exhaust valve up .050 inch) There is about 55 degrees before the Exhaust valve hasn't quite shut.
This is okay for normal running. Introduce a vacuum leak, and the surge of extra cold air, makes it pop.
Solution? I suggest checking to see if the clamps on those rubber sleeves are loose. You can also spray WD-40 towards the ends of each rubber sleeve, when the engine is idling, and see if it speeds up. Means, one or more, of those rubber sleeves has deteriorated.
Posted on Apr 25, 2009
Idle speed on a fuel injected bike must me set by the dealer if it's still stock. I think you can set it yourself in you have a Power Commander on the bike but I don't know how to work with that unit.
Posted on Oct 07, 2009
Professeur D is another of the people who just can't say "I don't know" or just be quiet. His comments are worthless. You don't say what the bike model or year is, but I bet it's a newer bike. I have an '02 FLHTCU with the engine juiced up a little and the rear cylinder really runs hot. The circuit breaker is located right over the rear cylinder, and since I have an oil temp gage I can see that when the temp hits 230 the breaker is going to open and shut all electrical off. I've changed breakers many times and the problem is still there and the dealers don't know what to do. I've been told by another rider that I should replace the circuit breaker with a fuse which will not be affected by temp. I'm going to look into that!
Posted on Jun 02, 2010
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