TOO FAR GONE FOR TREATMENT
Replacing Clogged Fuel Injectors
Fuel, it’s what brings your engine to life. It also will screw you over if you neglect it. We had an ’09 HarleyDavidson Road King for a project for the past year and a half, and we have been going through and replacing all the things that had decayed as the bike sat for three years. We began with all the guts in the tank: the pump, lines, float, and filter. We then discovered a faulty check valve and replaced that as well.
That took care of the fuel system minus the all-important fuel injectors. First we tried running a few fuel treatments through the system to clear out the semi-clogged injectors but to no avail. We eventually had no choice but to purchase a new set of injectors. We went with the same set that were already in the bike, which were the Screamin’ Eagle Pro High-Flows (part #27796-08; $130). Being already tuned with them, we didn’t want to change them out for a different brand. And with the final piece to the fuel system’s puzzle, we had our bike back together and better than ever.
Follow along as we install the new fuel injectors on our 2009 Road King project.
Our bright and shiny new Screamin’ Eagle fuel injectors eagerly awaiting their install.
With the injector’s connectors removed we turned our attention to the other side of the throttle body and took off the fuel line by removing the single Torx bolt holding the fuel line unit to the throttle body.
With the tank already removed from a previous install, here was our starting point for replacing our clogged injectors. Bit of a rat’s nest, wouldn’t ya say?
First things first we located the two connectors attached to the injectors and removed them.
And just like that it was as if nothing ever happened—well, at least to the naked eye, but we know better.
With the injector ports of the throttle body clean we slid the new injectors into the fuel line and then into the throttle body. And with that we just reversed our previous steps from the beginning by installing the fuel line clamp to the throttle body and reinstalling the injector connectors.
After taking the injectors out of the throttle body we went in and cleaned the ports with a Q-tip to remove the dirt and grime caked around the ports. Pretty gross, huh?
With the fuel line removed we had our old injectors completely exposed and ready to be pulled out and discarded.