Question about Harley Davidson Motorcycles
Posted by Anonymous on
Hi Anonymous, and the usual suspects are:
1. Severely discharged or damaged battery.
2. Loose, corroded or broken battery cable.
3. Alternator not charging or below normal rates.
4. Failed ignition coil, ignition/electronic module.
5. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor.
6. Faulty ignition switch.
7. Water or dirt in fuel system, carburetor or filter.
8. Fuel tank vent system plugged or gas cap not venting.
9. Fuel tank empty.
10. Fuel valve vacuum line broken or carburator vent line closed off.
11. Restricted, blocked or kinked fuel line.
12. Failed fuel pump, pressure regulator and or fuel injectors.
For a prime suspect please visit website below and good luck:
Harley Diagnostic Codes 04 to Present
Posted on May 21, 2015
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Posted on Jan 02, 2017
SOURCE: Was riding and my bike
You didn't tell me if your bike was fuel injected or equipped with a carburetor but your problem could be any combination of a lot of things. It could be fuel related with an inoperative injector, a vacuum leak on the intake or around the carburetor, trash in the carburetor, or something as simple as the vacuum hose for the VOES has a leak in it.
It could be a problem with the ignition unit as well. It could be in the "brain box" of the ignition unit or the sensor in the timer cavity. It could be a coil on the verge of total failure or a bad spark plug wire.
With no more information, it would just be a guess as to what your problem might be. The only way to figure it out is to choose a starting point and start checking and eliminating as much as you can. Now. testing some components is not as easy as some think. Take the ignition unit. Harley gives you specific readings you should get when testing the unit but then they tell you that you must use a particular type of meter or you may not get these readings. Just check what you can and if you can't find it, then a trip to the dealer may be the only option.
Posted on Nov 07, 2010
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