Injectors may not fail mechanically very often but they can be plugged. I had one go bad without dropping any codes - the indication something was wrong was the bike sputtering and hesitating under hard throttle. The bike was also running very hot.

Some time after the dealer replaced the injector I was removing the tank and I noticed what appeared to be some black rubber gasket material sticking out of the tank fitting. I suspect this had something to do with the failed injector.

To answer (maybe just a little) the original question... I've never personnaly replaced one on my bike but the service manual (You do have one don't you?) indicates you may need to rock the injectors back and forth to work them out of their sockets. The O-rings probably form a very snug connection.

 

I picked 2 codes for front and rear injector open. Bike rides and starts fine just when i pick up speed before shifting gears the check engine light goes on for a few seconds then goes off. You think i need to replace them or just clean them? Thanks for any help

 

If you are reading codes then the injectors or the wiring to the injectors are the likely cause. If an injector orifice is dirty or plugged you will have performance issues although you may not trigger an "injector" code.

I realize everyone says injectors never go bad, and for the most part that is true, but they can go bad. I was throwing codes for a rear injector on my '02 Duece. I kept riding it that way for 2 or 3 years because I didn't really feel any rideability issues.

I finally got tired of seeing my engine/security light flashing (intermittently) and decided to replace the injector. Even the parts guy at the Harley dealer told me I was wasting my time because "injectors never go bad". But I replaced it anyway. Not a single code since and its been about 5,000 miles and several months. Problem solved and yes it was the injector.

As far as the replacement goes, the injectors are a bit difficult to remove from the housing. The o-ring around the base of the injector is quite beefy and it takes some finagleing to get them out, but they will come out with a little patience.

If I remember correctly, I think I had to remove and replace both injectors from the housing simultaneously. Due to the angle at which they are installed (opposing each other) I couldn't get the injectors out individually.

So... don't fire your mechanic quite yet - yes, injectors can go bad.

 

Thanks for your input. I was talking to another mechanic and he told me the same thing. That it's probably a sensor or computer, so he recomended i take it to a Harley shop pay the hook up fee and this way they can tell me exactly whatthe problem is. He said no way both injectors would go out the same time.... So if its running fine and its not hurting anything i'll run it like that till i have a little more extra cash... Thanks again for your help

 

My 1999 RKC has a hesitation at throttling, and ALOT of exhaust popping during the ride. I recently had some work done, Chain CAM drives, and a power commander tuned and installed .

Could this be clogged or damaged fuel injectors?

 

You would be better off starting a new thread describing your troubles rather than dredging up a 5 year old thread.

Your issue is probably related to the PCIII not being tuned properly.

 

+1........

 

The problem is probably related to the recent "Changes"...