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My 17.5 hp briggs and stratton will start and run while the choke is on but when I try to idel up and come off of choke it dies it has automatic choke soo and it also will not start if not choked

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  • Master
  • 352 Answers

Something is restricting fuel flow. It might be:

  • Debris in the fuel tank. - Clean the tank.
  • Debris in the fuel filter (if it has one). - New filter.
  • Debris in the inlet valve (float valve). - Disassemble the carb and clean.
  • Debris in the jets. - Disassemble the carb and clean.
  • Hard deposit in the jets - New Carb.

Good luck.

Posted on Apr 05, 2015

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Need carburetor adjustment

I had a similar problem with my 23 hp briggs. While cleaning the carb I found that the great gas we get today had eaten the seal around one of the jets in the throttle body causing it to fall out. Replaced the jet and now runs like a champ. Hope this helps.

Posted on Jun 07, 2009

protek480
  • 1714 Answers

SOURCE: i have a briggs and stratton will start will

It sounds like your flooding out. Do yo live at high altitude? It will need to be jetted for altitude, (less gas)

Posted on Jun 30, 2009

mrrichardlbo
  • 59 Answers

SOURCE: Have to choke to keep running

this is not hard to do here is what you need , 1 can of carb cleaner anykind will do , a 10 mm rench to remove the bowl 7/16 socket . now remove the carb take a good look where the spring is before you take the carb off it muct go back in the same hole , now that you have it off take the bowl off remove the float place to the side here is the fun part look in the carb you will see some small hole spray them this will clean all of the old gas out if you can let it set for about 10 min then do it again blow out with air if you have one nothing else to do but reinstall this works most of the time ...Good Luck..

Posted on Aug 16, 2009

  • 15 Answers

SOURCE: Briggs and Stratton 20hp twin cylinder runs only with full choke

Had one on my saw mill had this problem as well Try pulling bowl off bottom of carby as the float can get **** with old fuel especially ethanol fuels as they attract water bowl is normally held on with one center screw on bottom of carby. Note always turn fuel off and let engine run out of fuel as this stops goop from building up in carby

Posted on Sep 06, 2009

  • 2 Answers

SOURCE: Briggs Stratton Intek V - Twin Vertical Ohv Engine with Electric Start 22 Hp, 1" X 3 5/32" Shaft, ModelNo. 44K777 - 0027 - E1: will only start with choke on and after warm (chok...

If it has a plastic intake manifold there is your culprit. The flanges warp and produce vacuum leaks and all three.

Posted on Nov 06, 2010

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Had one on my saw mill had this problem as well Try pulling bowl off bottom of carby as the float can get **** with old fuel especially ethanol fuels as they attract water bowl is normally held on with one center screw on bottom of carby. Note always turn fuel off and let engine run out of fuel as this stops goop from building up in carby

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