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You are watching: Briggs and stratton only runs with full choke


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Junk it. Throw the miserable POS away, shoot at it, anything but expect it to #$ I hate them things. I"ll give you a 18hp Kohler to replace it with.Ok, so I"ve said how i really feel.If it runs good on full choke at full throttle, the problem typically is fuel starvation. Choke is restricting airflow across the carb venturi and that in turn causes a richer mixture. Look for crap in the main jet again. Float level too low. Fuel pump and or fuel lines clogged. Gas tank empty, huge air intake leak behind the carb, you can check that with a can of brake and parts cleaner. Hope this part helps some.
Thanks~KansasFarmerhttps://www.facebook.com/Tristatethreshershow/ President and Boiler Inspector.1951 John Deere Model R: Factory optional cab included. 1916 Case 50Hp Steam engine (cheif engineer, but don"t actually own...might as well be mine though..) 1930 something 1.5 hp Type E Deere engine 1948 8n Ford 1980 something Deere 165 hydro, factory engine 38" deck 1995 Deere 345, 18hp 54" deck, 1984 Deere 430SOLD:1979 Deere 400, 23 hp K582 with blade and deck.
Check your fuel pump hookup. Vacuum line connects to the bottom of the fuel pump and fuel inlet to the side - no leaks. You did get the two tiny springs back in fuel pump valve system and in the right place? I can send you a Service Manual for your engine IF you like. Address below, remind me engine model number and what you want. Walt Connerwconner5 at frontier dot com
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Check your fuel pump hookup. Vacuum line connects to the bottom of the fuel pump and fuel inlet to the side - no leaks. You did get the two tiny springs back in fuel pump valve system and in the right place? I can send you a Service Manual for your engine IF you like. Address below, remind me engine model number and what you want. Walt Connerwconner5 at frontier dot com
Yes my spring are in the right place and I checked for leaks with a can of brake parts cleaner. My fuel pump hookup is correct, I actually don"t know for sure what model it is because the left engine cover is missing. I am quite sure it is getting fuel.
John 3:16 You must be the change you wish to see in the world - Mahatma GandhiBe sure you put your feet in the right place..... THEN STAND FIRM - Abraham LincolnMy Computer: Custom Built Gaming Pc, Amd x4 860k Cpu, Rx480 Graphics Card, 1Tb Hard Drive:fing32:My Toys: John Deere GT225 48", Cub Cadet Lt1045 20HP V-Twin 46", New Cub Cadet GT1554 27HP 54", Yard Machines 21HP 46", 1994 Stiener 420, 2004 Susuki Eiger 400(The speed machine).
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You are getting fuel, it runs. But maybe not enough fuel.I would check fuel flow from the pump and tank.Pull fuel line off the carb. Use a 1/4" nipple, or a short piece of 1/4" copper tubing, and add a couple more feet of 1/4" fuel line.Pull the plug wires off, and ground them. (Don"t want sparks flying) Remove the plugs. (This lets the engine turn over faster with less draw on the battery)Put the end of the fuel line in a jug, pail, or jar to catch the fuel. Probably best if all this is done outdoors. Away from open flames.Turn the engine over and watch the fuel flow. Should squirt out and be a good flow. If so, you are good for your fuel supply.If it just dribbles, you will need to trace back to the tank and see if you can find the restriction.Could pull the inlet line off the pump. Add your nipple and fuel line to that line and see if fuel will gravity flow from the tank.Use a wrapped up rag to seal and channel your lung pressure and blow into the fuel filler tube. Does the fuel siphon and gravity flow out at a good rate? Tanks can build up debris inside and block flow out. Who knows how the original owner filled his tank or how careful he was. People have found, bugs, rocks, dead mice, sand, grass, and leaves in their tanks when cleaning them out.Fuel line can get old, degrade, and start falling apart inside where you can not see it. Inner lining fails and acts like a flapper to keep fuel from flowing. Also check the line that supplies the pulse. Check for oil in it, leaks, cracks, and loose fittings. Replace if it is a bit dodgy. I just replaced all my fuel lines on one tractor this fall. It needed it.

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