Author [NL] [FR] [ES] [DE] [SE] [IT] Fuel Injector Seals  (Read 3124 times)

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  • Offline Jeffb   us

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    Offline Jeffb

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    Fuel Injector Seals
    on: Aug 08, 2020, 05.41 pm
    Aug 08, 2020, 05.41 pm
    I haven't done this in the past, but it seems like the best way to clean the butterflies and throttle bodies are to remove them from the engine. The manual calls for you to use new seals, or o-rings on the injectors when you put it back together. From what I can tell, you can't buy just the seals; you have to buy the entire injector to get new o-rings. Is that true?

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    Re: Fuel Injector Seals
    Reply #1 on: Aug 09, 2020, 01.13 am
    Aug 09, 2020, 01.13 am
    Every time I have made valve adjustments or for other reasons I have had to remove the fuel tank. I removed the injection body and cleaned the injectors and their butterflies, tightened their flanges well and nothing else. I've never had a problem in that regard.

    If it were the manufacturers, you would have to replace the whole bike so I don't see a need to replace gaskets or seals, unless they are in bad shape and that is not common.
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    Re: Fuel Injector Seals
    Reply #2 on: Aug 09, 2020, 04.31 am
    Aug 09, 2020, 04.31 am
    Thanks Digital. So, as long as I'm not ham-fisted, I shouldn't have any problems popping the injectors out of the fuel rail and then back in, without changing the seals? No new parts needed at all to take the throttle bodies off?

  • Offline digital   es

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    Re: Fuel Injector Seals
    Reply #3 on: Aug 09, 2020, 09.55 am
    Aug 09, 2020, 09.55 am
    Well, if you remove the rail where the injectors are, you must be very careful with the 3-star screws, since they are of poor quality and are well tightened. When I first disassembled the rail, there was no way to remove one of them and I had to use brute force. Then I put stainless steel screws, allen type.

    Honestly, I would not touch the rail of the injectors and would just blow pressurized air into the whole assembly and clean the injectors with ear cleaning pads. (I think I remember some member of this forum doing it like this) the next time I disassemble the injection assembly, I will.

    Last Edit: Aug 09, 2020, 10.11 am by digital
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    Re: Fuel Injector Seals
    Reply #4 on: Aug 09, 2020, 04.50 pm
    Aug 09, 2020, 04.50 pm
    Well, answers leads to more questions.  :153:  How do you clean the injectors with ear cleaning pads?  I don't even know what ear cleaning pads are-  Q-tips?

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    Re: Fuel Injector Seals
    Reply #5 on: Aug 09, 2020, 08.30 pm
    Aug 09, 2020, 08.30 pm
    I don't know what they call him, I guess he cleans ears.  :008:

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    Re: Fuel Injector Seals
    Reply #6 on: Aug 10, 2020, 11.39 pm
    Aug 10, 2020, 11.39 pm
    I don't know how sensitive/fragile the injectors are. Just put some carb cleaner on the q-tip and wipe it down?

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    Re: Fuel Injector Seals
    Reply #7 on: Oct 12, 2020, 02.24 pm
    Oct 12, 2020, 02.24 pm
    Hello there. Im about to clean my carbs... I went to my dealer to buy all the stuff to also make valve clearance and timing.
    When I asked him about the cleaning carbs operation the mechanical leader told me I must figure out for an ultrasound bath cleaning with the less disassembly I can.
    I called someone whos used to do this and he advise me that without any minimum disassembly, I only can expect bad result...