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Using choke when warm


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#1 Banjo123 OFFLINE  

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Posted September 03, 2015 - 03:37 AM

my 1965 b&s 10 horse power engine runs great but requires a brief choke to start even when warm. Anyone else have this?

Edited by Banjo123, September 03, 2015 - 03:43 AM.


#2 EricFromPa OFFLINE  

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Posted September 03, 2015 - 06:02 AM

Idle Circuit could be partly clogged up.It's in the top part of the old Flowjet carbs.Or you have a gasket that's not sealing.They usually start really easy even when cold.

 

How's the points and plug look? Those old briggs love to run a bit rich.There not happy unless they puff a bit of black smoke on startup.


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#3 Banjo123 OFFLINE  

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Posted September 03, 2015 - 06:05 AM

My plug looks kinda black. I'll try to change it I guess. I've not noticed any black smoke though. I guess you're saying I could richen up the mixture on the carb?

#4 toppop52 OFFLINE  

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Posted September 03, 2015 - 06:16 AM

Honestly, some carbs just dry out sitting or leak back when turned off due to vacuum, gravity, etc... if that's all it does it could be normal. The black plugs indicate a rich mixture, but that could be because they aren't firing hot enough due to wear on the plugs, a weak spark from ignition, etc...



#5 Banjo123 OFFLINE  

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Posted September 03, 2015 - 06:22 AM

Ok. I replaced the points. I'm gun shy of getting the mixture too rich and making it run hot.

#6 MH81 ONLINE  

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Posted September 03, 2015 - 06:33 AM

Actually, running lean will cause it to run hot.
I have several tractors that do the choke to start. Not unusual.
My Sears will not start, (crank and crank and crank) until you give it a half rev with choke.
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#7 Banjo123 OFFLINE  

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Posted September 03, 2015 - 06:45 AM

Oh ok. So maybe that's normal.. What's the best way to insure my tractor runs the best but isn't running too rich or too lean?

#8 EricFromPa OFFLINE  

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Posted September 03, 2015 - 09:00 AM

Put a good Plug in it and adjust the carb so that it doesn't studder while throttling it up or under load.

 

Best way to set a carb is under full load.But that is pretty hard to do unless you are mowing with it in high grass and can adjust it at the same time lol.Yep it's as dangerous as it sounds So Don't do it.

 

 

Champion J19LM plug is what I use if I can find them locally. 



#9 Banjo123 OFFLINE  

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Posted September 03, 2015 - 03:38 PM

Ok thanks a bunch!




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