Question about Briggs & Stratton Briggs Stratton Vanguard V - Twin Vertical Ohv Engine with Electric Start 23 Hp, 1" X 3 5/32" Shaft, ModelNo. 386777 - 0036 - E1

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Briggs stratton,16 H>P> runs smooth 'til mower is engaged.

Engine runs smooth "til mower is engaged then is sputtersand pops. After 20- 25 min. Engine stops. Copius amounts of smoke while running(darknot white).. Just had valves adjustednew plug new gas filter new air filter tune up. It runs the same as it did befor we took it in to get repaired. Mech thought it might be coilbut opted to check valves etc. Said ther was a lot of gas sittting on the piston head. Any ideas?could it be the carb is running too rich? It's 5 yrs. Old and has mowed hundreds of acresdry land farm dustyetc. Thanx in advance tmc

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  • 197 Answers

Is the choke staying on perhaps? check spark and plug check airflow, get compression test maybe the oil/compression rings giving way... sounds like its getting hot and increasing fuel flow for some reason??? perhaps clean carb with some cleaner while running (remove air cleaner) spray directly into carby while running run at full throttle as you spray it will try and die ... relax on the spraying and see how it goes.. check air cleaner for blockages as the same time :) hope you get it working!

Posted on May 04, 2017

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6ya6ya
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Posted on Jan 02, 2017

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  • 3 Answers

SOURCE: oil in air breather

sounds like you have too much oil in the engine (should normally be around 500-600ml when there is too much oil, it gets past the piston rings and pushes it through to the head.

Posted on Jul 09, 2009

  • 384 Answers

SOURCE: engine will not start. there is oil in the air

I would start by draining the old gas out of the tank and filling with fresh gas. Replace the spark plug.

Posted on Jul 13, 2009

honeymokey
  • 3113 Answers

SOURCE: carb is getting clogged and spark plugs fouling

Carburetor cleaner will ruin the rings and do that.

Posted on Apr 13, 2010

  • 4088 Answers

SOURCE: Briggs and Stratton Vanguard 23Hp starter issues

The starter may need shims between the engine and starter to permit the relative gears to release. Compare the two starters, if you still have the old one, for shaft length and bendix construction. Hope this helps!

Posted on Jun 06, 2010

Testimonial: "drallim, Everything checks out, cannot believe I've received 2 bad solenoids from NAPA. I had bought a new one and exchanged it because it seemed the switch was sticking. Still have not solved problem. Thank you for your time and efforts. Tim"

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1 Answer

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1 Answer

My bolens riding lawn mower was working great til i hit a low spot with longer grass it got real loud than shut off, when i tried to start it it will start turning over than pop real loud a couple tim


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1 Answer

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