Reconditioning Bosch (a.k.a. BMW) Fuel Injectors?Subscribe to this blog RSS Feed
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    1 of 7
    Yermo
    7 months ago
    So I'm starting to get up the gumption to tackle the big #k100rs project. As part of that, buffalo suggested having the fuel injectors serviced. In the K bike group on Facebook today someone posted a link to these guys:

    Link #68474
    Yermo
    7 months ago

    Mr Injector - Home

    Mr Injector services gasoline fuel injectors using the ASNU ultrasonic fuel injector flow bench and service machine. We offer fuel injector flow testing, cleaning and reconditioning.

    http://www.mrinjector.us/
    Have any of you had injectors serviced? Who do you use?
    2 of 7
    Robermcm
    6 months ago
    following...
    3 of 7
    Yermo
    6 months ago
    Some more info on this topic. I think when I pull the throttle bodies out during the upcoming engine swap I'll have them reconditioned:

    Link #69257
    Yermo
    6 months ago

    K Bike Fuel Injectors

    A description of k bike fuel injector reconditioning.

    http://www.kbikeparts.com/classickb...
    4 of 7
    Yermo
    5 months ago
    I've filled out the service form for Mr. Injector and will be sending them my injectors tomorrow. They claim a two day turn around.
    5 of 7
    Yermo
    5 months ago
    I sent off the injectors to Mr. Injector. The process couldn’t have been easier.

    Fill out their form. Ship your injectors and their form to them. They turn it around on short order, two days in my case.

    It turns out only one injector was found to be in “fair” instead of “good” condition.

    Photo #70877
    Yermo
    5 months ago
    Clean Injectors
    6 of 7
    Yermo
    5 months ago
    7 of 7
    Yermo
    last month
    Well, after a significant pause in this project, we got the throttle bodies and injectors mounted yesterday. 

    It was significantly easier than I had expected. Hopefully the seals will hold. The instructions called for a bit of engine oil on the o-rings to make certain they seated correctly. They popped right into place with just a bit of effort. 
    Once the bike is running, I'll loop back and report on performance. 

    If you want, you can follow the project here:

    Yermo
    last month
    Project (74721)
    The Great BMW K100RS 16V Engine Swap Project of 2019

    The Great BMW K100RS 16V Engine Swap Project of 2019

    My '92 K100RS 16V with 123,000+ miles on it started  significantly consuming oil and fouling plugs. It started smoking dramatically on deceleration as reported by Duncan. A compression test and leakdown showed a variance of more than 20% between the cylinders. My best guess is that two things failed in concert: the thermostat stuck open and the temperature gauge did not read accurately. As a result, the theory goes, I ran the bike too cold for probably too long and that caused it to fail.

    I had picked up a spare identical bike because I wanted to swap out the fairing since mine had started looking pretty rough. The donor bike is actually in much better shape and a saner man would just have attempted to transfer parts from my bike over. But as it turns out the donor bike also needed the water pump rebuild, the rear main seal, and other work including cleaning up evidence of some monkeying by previous owners. 

    As a result, I made the decision to disassemble both bikes and create one decent machine from the best parts of both bikes. We made short work of the disassembly but then with distractions the project has lingered. Time is getting tight as Bruce is going to be flying into town and the three of us hope to go on a multi-day ride. If need be I'll ride my DR650SE but ideally I'd like to have my Beloved Blue Oil burner back in service before then. 

    To make the job of coordinating parts, tasks, information, and documentation, I've taken a few days away from banging my head against the mobile app development wall, and built out a project/build feature which months ago I had discussed with Mike. It's super rough at the moment but it presents the beginning of a place to thoroughly document one of these big projects along with all the associated rich media that goes with it. My hope is that it's going to be useful. 


    Some photos from yesterday's work:

    Photo #75103
    Yermo
    last month

    Photo #75104
    Yermo
    last month
    Freshly serviced injectors from Mr Injector.

    Freshly serviced injectors from Mr Injector.

    These injectors came off my bike and after being serviced by Mr Injector they look good as new.
    Photo #75106
    Yermo
    last month

    Photo #75105
    Yermo
    last month

    Photo #75107
    Yermo
    last month

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