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Weird problem with 1953 Briggs 2hp


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  #1  
Old 02-11-2009, 03:18:31 PM
Troy Troy is offline
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Default Weird problem with 1953 Briggs 2hp

i am having what i would call a very weird problem with my recently bought 53 briggs 2 horse. it has the updraft carb with the intake on the bottom,and when i first tried to start it the day i got it,loads of gas were draining out of the carb and exhaust.i took the head off expecting to find a stuck valve,but they were properly seated.so next i went to the carb.i took it completely apart ,and put it all back together,noo holes in the float or anything like that.i resetit back to factory specs and bolted it back on...WHAT COULD IT BE????????????
any info would be highly appreciated,thanks.Troy
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Old 02-11-2009, 03:31:33 PM
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Default Re: weird problem with 1953 briggs 2hp

float not shuting off hole in float or needle in seat not sealing maby
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Old 02-11-2009, 04:06:32 PM
Troy Troy is offline
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Default Re: Weird problem with 1953 Briggs 2hp

yeah thats what i thought...i checked the float and it came out with no leaks...idk about the needle though
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Old 02-11-2009, 04:20:14 PM
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Default Re: Weird problem with 1953 Briggs 2hp

if helps you can ajust a float by puting a flathead were needel hooks to float to ajust by bending metel flap up or down for gas intake glad to help
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Old 02-11-2009, 04:34:26 PM
Sky
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Default Re: Weird problem with 1953 Briggs 2hp

Make sure your float is parelel or level with the carb. body when you set the float. Thats how it should be set. What model is it just out of curiosity. Is it a 6B? Small flow updraft carb? I forgot how the needle and seat were on those. Anyway, check your float level any which way you go with it.
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Old 02-11-2009, 06:07:21 PM
Troy Troy is offline
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Default Re: Weird problem with 1953 Briggs 2hp

i already checked the float level when i took the carb apart,andi reset it.by the way as far as i can tell it is a model 6.

model #106030
serial#216686
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Old 02-11-2009, 07:54:43 PM
Arlie Levy Arlie Levy is offline
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Default Re: Weird problem with 1953 Briggs 2hp

When you had the carb off, did you blow into the inlet on carb and control the float with your hand. This way you can see if it is leaking. Maybe the needle is not seating right. Is the seat crossthreaded or not screwed in right?Arlie
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Old 02-11-2009, 07:54:58 PM
Sky
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Default Re: Weird problem with 1953 Briggs 2hp

K, just curious. I knew it had to be a 6 if it was a 2 H.P. for '53
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Old 02-11-2009, 08:56:17 PM
Bob Shannon Bob Shannon is offline
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Default Re: Weird problem with 1953 Briggs 2hp

I have seen them updraft Briggs carbs warp where the two halves come together. Might be some thing to check. Good luck!
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Old 02-11-2009, 09:46:38 PM
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grub54891 grub54891 is offline
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Default Re: Weird problem with 1953 Briggs 2hp

Usually when we rebuilt carb's at a shop I used to work at we would check em with a mighty vac,set to pressure side,Put it on the inlet and pump it up,it should hold 5lbs.Carb inverted with float set level.If it don't the needle or seat is bad.Hope this help's ya,Tom
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Old 02-12-2009, 09:20:48 PM
Ed Stoller Ed Stoller is offline
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Default Re: Weird problem with 1953 Briggs 2hp

Troy, I would also say check for warpage. Send me an email off list and I can send you some details with pictures. edstoller at earthlink dot net
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Old 02-12-2009, 11:10:20 PM
Don Naismith Don Naismith is offline
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Default Re: Weird problem with 1953 Briggs 2hp

Take the bottom off of the carb - leave the float intact. Turn fuel off if you have a shutoff. Connect fuel line. Hold float in up / closed position. Turn fuel on and see if the float needle valve prevents fuel from entering carb.

Suspect you may have tried this already, however, posting just in case.

Don
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Old 02-13-2009, 11:12:22 PM
gambitace71 gambitace71 is offline
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Default Re: Weird problem with 1953 Briggs 2hp

You checked the valve seats did you check the clearance between the valve stem and the tappet. take the small cover off behind the carb & take the head off. turn the engine over until the intake and exhaust valve have both finished closing then bring the piston to top dead center measure the distance between the valve steam and the tappet on the intake should be .008 and the exhaust should be .012. the intake is probably to close but you might have to grind both valve steams.
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Old 02-14-2009, 10:27:08 AM
K D Redd K D Redd is offline
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Default Re: Weird problem with 1953 Briggs 2hp

I had the same problem on this style Briggs carb on a larger engine. I could NOT stop the fuel from showing up in the air horn. I even pull the old seat from the upper part of the carb to install a new one. I finally removed the carb from the engine and connected it to a fuel tank. I then found the problem. There were TWO holes, from corrosion in the bowl, that lead directly to the air horn. A little JB Weld fixed the problem.

Kent
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