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Thread: Missfire in Streetglide Special

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    Missfire in Streetglide Special

    Hi,
    I have a 2017 STreetglide special with Stage I (v&H Pipes, Screaming Eagle air filter and FP3). Everything was going fine for 6 months, until a few weeks back I updated the firmware on the FP3. We went to Hostock in Holland and on third day after riding 400 miles on first day and 50 miles on the second I started to get miss fires at high speeds. On way back there was no issues. Yesterday I went out on or TVHOG rally ride and after 20 plus miles it started to do again and when I started looking at the FP3 app I did not find anything, nor did any errors come in.

    Any suggestions? I read on an earlier verison of softtail of similar issue, I think, and the cause was a pihole on the fuel line from tank to the fuel pump.

    Thanks
    Mohit

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    Re: Missfire in Streetglide Special

    Bin the FP3 and go with a Power Vision ...

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    Re: Missfire in Streetglide Special

    Have you tried loading the factory map and start a fresh Autotune?
    Was Hogjob, now Oddjob same $h*t different name.

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    Re: Missfire in Streetglide Special

    Go to the next slot available on the FP3.
    Do a fresh set up for your current config.
    Reflash it, ride it for a couple of tanks then if need be run Autotune. (YouTube if need be).
    Dont forget you can send V&H any recieved data so they look at it and help you out.
    Make use of thier aftersales, the FP3 when used correctly is a very good bit of kit, there are also some very good other tuners out there but if you have the FP3 stick with it to get the most out of it.

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    Re: Missfire in Streetglide Special

    Quote Originally Posted by Oddjob View Post
    Have you tried loading the factory map and start a fresh Autotune?
    Sorry had been outr . of coms.. just managed to get back in.. the answer is no, but can try

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    Re: Missfire in Streetglide Special

    Quote Originally Posted by les049 View Post
    Go to the next slot available on the FP3.
    Do a fresh set up for your current config.
    Reflash it, ride it for a couple of tanks then if need be run Autotune. (YouTube if need be).
    Dont forget you can send V&H any recieved data so they look at it and help you out.
    Make use of thier aftersales, the FP3 when used correctly is a very good bit of kit, there are also some very good other tuners out there but if you have the FP3 stick with it to get the most out of it.

    Sorry had been out . of coms.. just managed to get back in.. I will try this tomorrow.. bit scared that I might no mess up something else?

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    Re: Missfire in Streetglide Special

    Today when I connected my phone to FP3 it asked for an update on firmware which I have done. I will now ride it and see if the problem has been resolved, else will try what has been suggested here.

    Thanks thus far...

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    Re: Missfire in Streetglide Special

    I don't think that just updating the firmware will affect anything on the bike, that's just the software that lives inside the FP3 making it work.
    To change anything, as previously suggested, you need to download and flash a new map. Then put it in autotune mode for a few rides and re flash. It's well worth doing the autotune as the V&H maps are for U.S. petrol which is different octane from ours.
    It's worth having a look at this youtube video, despite not knowing how to put on a hat properly, he explains things very clearly.

    https://www.youtube.com/watch?v=pQkbnUyPIYY
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    Re: Missfire in Streetglide Special

    Some simple stuff to check. 1. The front cylinder HT lead of TC SGs chafes on the underside of the tank, result: misfire (I protected mine with spirowrap) 2. Recommended plug service life is two years, check their condition. 3. Picked up dodgy fuel en route or water in tank?
    Last edited by dynalow; 17-07-2019 at 09:42 PM.

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    Re: Missfire in Streetglide Special

    Quote Originally Posted by dynalow View Post
    Some simple stuff to check. 1. The front cylinder HT lead of TC SGs chafes on the underside of the tank, result: misfire (I protected mine with spirowrap) 2. Recommended plug service life is two years, check their condition. 3. Picked up dodgy fuel en route or water in tank?
    No1 is an issue on all post 14 touring bikes.
    Fixed mine the same way.
    I also change my plugs at 10k miles.
    May be overkill, but works for me.

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