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techtalk:evo:engctl03a [2018/01/28 16:24]
ixl2relax [EVO: Engine Control - Sub-03a]
techtalk:evo:engctl03a [2024/01/03 05:54] (current)
hippysmack
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-====== EVO: Engine Control - Sub-03A ======+====== EVO: Engine Control - Sub-03a ====== 
 +====== Cleaning Fuel Injectors ​======
  
-===== O-scope Signals ​VSS & TSM Cancel ​ =====+**Notes**:​ 
 +Disconnect the fuel line and purge the high pressure: ((5.elements of the XLFORUM https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-intake-and-exhaust/​sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/​197902-cleaning-fuel-injectors#​post4336381)) \\ 
 +  * To prevent spray of fuel, purge system of high-pressure fuel before supply line is disconnected. \\ Gasoline is  extremely flammable and highly explosive, which could result in death or serious injury.  
 +  - Remove left side cover. 
 +  - Remove fuel pump connector from ECM caddy cover. 
 +  - Unplug fuel pump connector. 
 +  - Start engine and allow vehicle to run. 
 +  - When engine stalls, operate starter for 3 seconds to remove any remaining fuel from fuel hose. 
 +  - Shut off ignition.
  
 +Pulling the injectors is pretty easy once you have the above done. \\
 +Then,\\
 +  - Remove the bracket from the intake manifold.
 +  - Disconnect the electrical connectors from the injectors (there are two, one to each injector).
 +  - Gently rock the fuel rail back and forth to remove the rail and injectors (not too gently).
 +  - Pull the injectors from the fuel rail.
  
 +Once you have the injectors out, you can use a trickle charger for the 12v power supply. \\
 +Cleaning the injectors: \\
 +  - Find the correct size holder for the injectors.
 +  - Push the injector all the way into the holder.
 +  - Connect the power lead to the injector (not to the battery yet).
 +  - Connect one end of the power lead to the 12v source (trickle charger in this case).
 +  - Put the holder onto the carb cleaner can and pressurize it (keep a hold of the injector too).
 +  - Energize the injector and watch it spray across the room and go from a tiny amount to much larger as it gets clean. \\ Only used pulses of power. Do not leave it connected.
 +  - Remove power, release pressure on the injector holder.
 +  - Remove the injector from the holder, reverse it and do it all again, then reverse it again.
 +  - Do the same to the other injector. \\ Put it all back together (as long as your O-rings are still good) and enjoy!
  
  
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