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Lister D firing problems

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Post by ColinW Mon Feb 11 2019, 08:34

Hi, I've always wanted a Lister D & finally managed to get a 'scrapper' which I have completely refurbished so it now looks pretty good. I didn't need many parts so the re-build was fairly simple (& cheap!). However, I'm really struggling with keeping the engine running. It has been starting up ok (once the plug is cleaned) & has been running for approx 5 mins but then eventually stops & seems to be because the plug is sooted up. After repeating this several times yesterday though, it then stopped firing altogether even though there was a spark. Can anyone help please, any ideas very welcome. NB I've got a new D16 spark plug on order so maybe that will help (maybe wishful thinking!). Cheers, Colin.

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Post by Robotstar5 Mon Feb 11 2019, 10:33

I don't run my Lister D much so probably not the best person to ask Very Happy but sooting up plugs is normally sign of over fuelling so maybe needs the mixture adjusting?

Good video on how to start & stop one here - https://www.youtube.com/watch?v=8McnZM0qte4 adjusting the mixture at about 4 minutes.

Stuart.
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Post by ColinW Mon Feb 11 2019, 11:20

Thanks Stuart, I've fiddled around with the mixture & the spring tension on the air intake but without success. Hoping the new spark plug helps.
Colin.

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Post by Woodsman Tue Feb 12 2019, 10:04

Hi Colin,

I took the liberty of moving your topic to a more (IMHO) appropriate section.
Best of luck with your project.

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Post by Appletop Tue Feb 12 2019, 18:04

Somehow it's over fueling, either float height is too high, theres a notch on the needle that the clips clip into, needle not seating correctly, air valve too tight or mixture screw open to far, mix screw needs to be around a 1/4 turn ish from fully closed, closed as in shut, not against the stop pin.
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Post by ColinW Wed Feb 13 2019, 19:02

Thanks Villiers, I'll have a look at all of these over the weekend & report back.

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Post by Appletop Wed Feb 13 2019, 19:50

[quote="ColinW"]Thanks Villiers, I'll have a look at all of these over the weekend & report back. [/quote]

Please do, nothing more annoying than giving advice and hearing nothing back
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Post by ColinW Fri Feb 15 2019, 14:36

New Champion D16 plug arrived so thought I'd better get it in & tested. I've had it running for approx 1 hour now with the mixture set at approx 1/3 open (any less than this & it dies), Youtube link below. Seems ok although a bit hit'n'miss but the air intake valve is hardly moving (hopefully visible in the video) & if I open it manually, even briefly then the engine dies. The spring I used for the air intake was one I had lying around so maybe it's too strong, but then why doesn't it keep running when I lift the valve manually? Hopefully I'm getting there but would appreciate any thoughts/hints. Many thanks.


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Post by Appletop Fri Feb 15 2019, 18:33

Sounds about right for a D running light. You can adjust the spring tension by undoing the nut and winding the threaded part in or out, if it will move, just be careful you don't crush the tube,....
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Post by ColinW Mon Feb 18 2019, 11:34

Villiers wrote:You can adjust the spring tension by undoing the nut and winding the threaded part in or out
I wound the threaded sleeve out approx 1/4" & the engine stalled so presume it's about right as it was, strange though that the valve hardly moves.... Anyway, I'm part way through building a screw type log splitter which will be driven by this engine so fingers crossed Smile

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Post by Appletop Mon Feb 18 2019, 18:37

The valve opens in relation to the amount of work the engine is doing, the harder it's working the more it opens. Good luck with the log splitter, it's been on my "To do" list for a few years but now I'm moving I shan't need one.
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Post by Woodsman Tue Feb 19 2019, 10:16

ColinW wrote:
Anyway, I'm part way through building a screw type log splitter which will be driven by this engine so fingers crossed Smile

If you get it going can I bring some logs down? Wink Wink

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