On and off with an occaisional pop sounds electrical. Chek all battery connections first, then check the other end of the cables and make sure they are tight also. Then take all the electrical connections apart and look for corrosion, clean them and put some di-electric grease on them. This doesn't take too long to do and you can do it yourself. If the problem still exists then it is fuel. When you are checking the battery connections it would be a good time to put some star washers on them. Hope this helps.

 

Only thing that was done to the bike was when he bought it in 2003 new he had SE slip ons put on and a stage I kit and they remapped the ECM bike ran fine for last several years until now.
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It happens at cold, hot and any speed

 

didn't 03,s have a bad main circuit breaker?
you didn't say if everything goes dead or not









?

 

Check the wiring to the fuel injectors\\; they have been known to brake under the insulation from the engine moving around causing an intermittent problem.

 

If he loses all power when it happens it is a short causing the circuit breaker to pop.&nbsp\\; If it is like he is running out of gas, I would suspect the fuel line in the tank.

 

Like has been said, check all the connections, especially anything in the ECM/spark plug/fuel injector connectors.&nbsp\\; Clean with contact cleaner and add dielectric grease.

 

Does not loose all power just cuts out like a loss of fuel

 

Here is a link to what I was talking about with the injector wiring. https://www.hdforums.com/m_216195/tm.htm
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the tube you are talking about is $40.00 and the install was easy, now mine runs all the time no cutting out anymore.

 

pin holes in the fuel line is an emission warranty which is 18 K and change if that's what it is, it's covered!&nbsp\\; Been there-twice!!!!!!