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Can I temporarily bypass a fuel solenoid on a 18 hp vanguard ?to test if bad because it only acts up after engine is warm?

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Vanguards made from B&S have a hot valve problem in that when the engine is hot there is no valve clearance and so the valves are held slightly open. Most noticeable if you let the engine cool down it starts with no problem. The valve stems stretch when hot and it will need a slight bit of adjustment and it should be right.

Posted on Aug 03, 2013

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Posted on Jan 02, 2017

gill73115
  • 6 Answers

SOURCE: Engine appears to run normaly until PTO is

Check you float in the carb I had one a few years back and it was partualy plugged cleaned it out and everthing worked fine. Also is the PTO binding up or bearings going bad putting an excessive load on the motor.

Posted on Jul 08, 2009

  • 540 Answers

SOURCE: My 18 hp vanguard is

if the diaphragm in the fuel pump gets a small hole in it , it will still run, but **** fuel into the crankcase, the fuel pump is serviceable, and easy to rebuild, a new diaphragm kit is fairly cheap at any local saw shop, just remember to take the model number off of the engine so they can look it up, and sometimes its a good idea to take the pump in with you to match it..

Posted on Aug 20, 2010

Vanny Man
  • 4 Answers

SOURCE: 18 hp vanguard 165lbs and 180 lbs compression have

if its hard to get the engine to turn past the compression release then pull your valve coversand try setting your valve lash
.006 on intake
.008 on exhaust

Posted on Oct 26, 2010

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Ihave a vanguard 20 hp v twin on my snapper mower you turn the key and get like a kluk sounds like its coming from starter


Does it do it every time? First try and turn your engine by hand counter clockwise and try to start..sometimes the engine stops on a compression stroke and Is Under too much pressure for the initial start,..happened to my cub cadet laast week...,,if it turns and still gets a click...test or charge your battery..if it is ok you either have a bad solenoid or starter...first find the solenoid and croosing the two big post..it should spin the engine..if it spins it is your solenoid if not the starter is bad...not a hard job for either...both can be purchased at your local mower place...giid luck

Oct 24, 2012 | Briggs & Stratton Briggs Stratton Vanguard...

1 Answer

I have a 18 hp b&s vanguard engine and it will only run on half choke any ideas


it,s not getting enough gas, your carburater needs cleaned and there's an mixture screw on most engine's hope this helps

Sep 22, 2012 | Briggs & Stratton Electrical Supplies

1 Answer

18 hp vanguard 165lbs and 180 lbs compression have to hand turn engine past compression or starter wont turn engine over


if its hard to get the engine to turn past the compression release then pull your valve coversand try setting your valve lash
.006 on intake
.008 on exhaust

Oct 25, 2010 | Briggs & Stratton Briggs Stratton Vanguard...

1 Answer

My briggs vanguard v-twin 16hp after initial start up this fall started leaking fuel from the carb into the cyl. and into muffler. The jet is seated and not dirty. It leaks somewhere else in the bowl. ...


The solenoid on the bottom is a fuel shut off solenoid to prevent backfiring if shutting down engine with the throttle still open. If you're leaking fuel into the engine, the float is not closing the needle valve in the carb. remove fuel bowl and replace float, and needle valve with seat.Be sure to blow out all fuel passages

Oct 15, 2010 | Briggs & Stratton Briggs Stratton Vanguard...

1 Answer

My 18 hp vanguard is making oil,( oil level is rising) is not carb as it starts and runs good. any chance of bad fuel pump?


if the diaphragm in the fuel pump gets a small hole in it , it will still run, but **** fuel into the crankcase, the fuel pump is serviceable, and easy to rebuild, a new diaphragm kit is fairly cheap at any local saw shop, just remember to take the model number off of the engine so they can look it up, and sometimes its a good idea to take the pump in with you to match it..

Aug 20, 2010 | Briggs & Stratton Briggs Stratton Vanguard...

2 Answers

18 Hp V-Twin quits after warm up - will restart but only runs with choke fully engaged


i have the same issue and trying to figure it out so I appreciate being part of this conversation,

May 05, 2010 | Briggs & Stratton Briggs Stratton Vanguard...

1 Answer

Briggs and Straton 18 HP engine, misses, with black smoke


Ive only caught round four so I dont know what all youve had done. I do know if you have blue/black smoke from your muffler,and oil in your air filter,youre getting blowby,and should probably check the head gasket and get new rings.

Aug 04, 2009 | Garden

1 Answer

After about 30 to 40 minutes of use (varies, the


I have a 7 year-old craftsman mower with a 22 HP Briggs engine that has the same issue. After about an hour, the mower acts as if it is starving for fuel and then stalls. Then after about 5 minutes of sitting, it will run for a little while longer.
If your engine is similar to mine, then its carb has a fuel shut off solenoid which shuts off fuel to the Main Jet when Voltage is removed to prevent backfiring when the key is shut off.
Unfortunately, this solenoid can also cause the carb to starve for fuel when not working properly. In my case, when I cleaned the solenoid and the solenoid's connections, the tractor had no problem after that.

Hope that helps,
Steve

Jul 25, 2009 | Briggs & Stratton Briggs Stratton Vanguard...

1 Answer

Engine appears to run normaly until PTO is egaged,then it backfires and quits. Engine is an 18 HP Vanguard twin, model 350777.


Check you float in the carb I had one a few years back and it was partualy plugged cleaned it out and everthing worked fine. Also is the PTO binding up or bearings going bad putting an excessive load on the motor.

Jul 04, 2009 | Briggs & Stratton Briggs Stratton Vanguard...

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