Author Topic: Injector cleaning  (Read 361 times)

Guymcfly

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Injector cleaning
« on: September 01, 2014, 07:02:42 pm »
Has any1 done this...I kind of need a walk thru before I start it.

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Guymcfly

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Re: Injector cleaning
« Reply #1 on: September 03, 2014, 08:43:09 am »
Replying to my own post...

I found some advice on another forum and set to work this afternoon. It's a very simple procedure, remove shrouds, air box, and injector using the Phillips head securing screw and quick disconnect fuel line.

Because I had no injector problems I didn't bother with getting the injector sonically cleaned. I simply used electrical contact cleaner squirted thru both the hose and injector and blasted them clear with compressed air. This was more about the process of removal. That being said I could hear how the bike idled better and smoother after I started it later.

Some things to consider when the Airbox is off the bike...

Check the fuel line where it can rub. I placed a bit of larger diameter hose on the vulnerable area to shield it.
Consider a valve check at the same time. The Airbox is off after all.
If you are swapping to a manual cam chain adjuster the access is there.
A good check of all the electrical connectors is pretty easy at this point as well.
Good time to check/change the spark plug.

Time taken.

Time to remove air box...10 mins (includes removing the seat and shrouds).
Removing injector (gently with this as the screw is soft metal) and fuel hose...5 mins if you include searching for the correct size screwdriver!
Clean...as long as you want or as quickly as an injector service takes.
Refit everything (put a little wd40 on the rubber washer so it seats properly)...maybe 10 minutes or 15 if like me you forget to lift the throttle cable to the upper side of the front Airbox screw and have to take it off again. >:(

All in all I think from now on every time I do an oil change I'll be doing an injector service as well.

truck11

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Re: Injector cleaning
« Reply #2 on: September 03, 2014, 09:02:13 am »
Guymcfly - how many miles on your bike that it was 'dirty' and made a difference once you cleaned the injector?
2014 690 Enduro R


Guymcfly

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Re: Injector cleaning
« Reply #3 on: September 04, 2014, 07:19:06 am »
I'm not sure of my mileage because I popped the speedo off for as desert race sometime back and haven't bothered to put it back.
But my neck of the woods is on the edge of desert country. It's dry and dusty for most of the year. I cleaned the gas tank and changed fuel filter maybe 1k miles back, but with an injector I think it's more about super fine dirt particles that can pass thru the filter. The dissolved stuff that will end up being part of the varnish on the injector.
It also depends on the contaminants that are in the pump gas when you buy it.

Because I'm a carby centric kinda guy, the removal was more an exercise in learning the process so I can do it quickly and efficiently for the future. That being said when it was all off I wasn't not going to spray some contact cleaner and compressed air thru it.

As to result? Smoother throttle response and idling even with my quick clean process. Makes me think maybe a sonic clean will make a really big difference.

As I mentioned, from now on when I'm servicing the bike, the injector will get a service as well.
« Last Edit: September 04, 2014, 07:21:00 am by Guymcfly »

truck11

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Re: Injector cleaning
« Reply #4 on: September 04, 2014, 07:47:29 am »
Thanks for the info!  With the poor designed gas filler, these bikes are prone to just pouring dirt and crap down into the tank!  ( I am keeping my eye open for the redesigned gas filler mod from KTM Twins that should be out shortly)
2014 690 Enduro R


Guymcfly

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Re: Injector cleaning
« Reply #5 on: September 04, 2014, 10:10:08 pm »
Why don't you just get the Rally Raid one?