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Kholer c Command 14 hp ohv engine equipped with carburetor solenoid will run fine for about 15 minutes then loose power, back fire and stall. Unable to start (sputters and backfires) unless let sit for 10 - 15 minutes. it then starts fine and you can mow until the cows come home! Noticed that when looking in the fuel tank small bubbles appear from the fuel line. Replaced spark plug, fuel filter and fuel tank cap .. didn't solve the problem What do I look for now?

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  • Garden Master
  • 865 Answers

If you take the carb solenoid of see if it has a black rubber cap on the tip. some times if you pull on it it will come off. if it does replace or cut the til off. don't try to force it off but if it comes off easily that may be the problem. as it is running it is sucked off by the vacuum inside the carburetor.

Posted on Jun 12, 2017

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6ya6ya
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Posted on Jan 02, 2017

shadtremonky
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SOURCE: engine coughs and stops after about 15 min. of cutting

check the vacuum line from pump to crank case fo leaks

Posted on Jun 20, 2009

  • 202 Answers

SOURCE: craftsman garden tractor stalls after running for about 20 minute

do you have the right fuel filter? some are for pressure and some are for gravity feed, the pressure type (fuel pump) wont flow the gas correctly. another possibility would be the coil.

Posted on Jul 07, 2009

  • 61 Answers

SOURCE: engine runs but sputters after engaging blades

ck for water in carb bowl. also ck for filter in gas tank, or something in gas tank.

Posted on Sep 06, 2009

backwoodsctr
  • 169 Answers

SOURCE: DLT 3000 Intek 18.5 Carb Float Stuck?

If it starts cold and runs for 10 min then it sounds like the fuel cap is not venting properly, try runnin engine with fuel cap loose and see if it dies. 9 times out of 10 the fuel cap is the culprit. Let me know

Posted on Nov 30, 2009

  • 2 Answers

SOURCE: stalling after mowing a little

Get a toothpick and make sure the hold in the gas cap isn't plugged.

Posted on Jun 06, 2010

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Miller trailblazer 275 stalls after about two hours of welding.....


there is a voltage regulator directly above the electric fuel pump on this welder, make sure the three connectors are making good contact, there are three wires attached to it, the center conductor is either violet or blue, if the spade terminals are not making proper contact your machine will shut down as you state
you may also have a "sticking" or faulty fuel stop solenoid
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Runs good for a couple minutes after starting, then at idle a small miss begins to occur, it increases and it stalls. this sook was running perfectly at 55mph and it died, no fire,after a few minutes it...


Hi Olddog6, and the usual suspects are:
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I have a 6.5hp Briggs and Stratton engin on my lawnmower. I have fresh fuel in it. I put a new spark plug in and it does spark. I have checked and cleaned the float and it works. I put a new air filter in....


The surging you are experiencing sometimes indicates a dirty carburetor. Somewhere inside it, something isn't right. Their is a possible solution that doesn't involve carburetor disassembly. Go to the auto parts store. Purchase a 15 oz. can of Chem Tool Berryman B-12 fuel system cleaner. The prescribed dose (for autos) is 1 ounce per gallon. You can increase this dosage to be sure and get the job done. Add it to your machines fuel can. Add some to the machine (maybe after draining off the old fuel). Let the machine run and idle with the new gas and cleaner cycling through it. It WILL clean the carb and probably the intake valve of the motor. You should see positive results.
A couple of other things though. I suggest installing an inline fuel filter between tank and carb. It will help greatly. There is also the possibility that if this 6.5 HP engine is an OHV engine, that the valves may need adjusting. On a standard flathead (L head) type engine removal of the valves is required. Adjusting the valves on an OHV motor is easy. You just access the clearances from the Briggs website for your engine. Remove the cover with the 4 screws in it. Using a Torx driver or screwdriver and a box wrench, with a feeler gauge (the spark plug needs to be taken out too) YOU can adjust the valves. This is required periodically and makes the engine easier to start and it performs MUCH better. Try these things and post back if needed. Good luck.

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Kohler Command 12.5 OHV engine on John Deere STX 38 will not start. Engine spins at a high rotation rate but will not fire. Spark is present at plug. Suspect automatic compression problem but not sure how...


Have you tried pouring a little fuel into the plug hole and try for start? If it runs for a short time, you have fuel delivery problems. Check the fuel filter for plugging. Look under the carburetor bowl for a small solenoid that commonly sticks in one position. I'm not aware of an automatic compression release on these engines. As this is a 4-stroke engine, it's possible that one of the valve clearances has closed up during use. Check this with the piston at top-dead-center on the compression stroke. Hope some of this helps!

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Ariens 935031 cuts off after about 15 minutes. what is the cause


Hello dalefan829:

>>The Following is a Basic Instruction File I made for this. Any Input is Appreciated. I Usually Suggest you Check the Following in this Order for a Problem like yours. 1- Check the Gas Tank Cap and Ensure it is Venting the Tank. A Vacuum Builds in the Tank and the Gas Flow Stops or Slows (15 to 45 Minutes and if the Small Grainular Sand is in the Tank it can Take Several Days of Constant Running to Bring All the Sand Particales to the Tank Outlet Port) to a Point it Shuts Off the Engine. 2- Operate the Equipment Until it Quits (15min to 1hr). Then Immediately Check for Fire from the Plug. If the Plug is Firing, then 3- Check the Carburetor Solenoid. If the Carburetor Shut Off Solenoid has Current, then Remove the Carburetor Solenoid and Go to the Hardware Store. Purchase a Bolt of the Same Diameter and Threads. It Needs to be 3/4" Long. Put this Bolt in Place of the Solenoid. If this Corrects the Engine Problem, then Replace the Solenoid. ***NOTE: THIS IS FOR CHECKING THE SOLENOID ONLY I NEVER SUGGEST YOU OPERATE THE ENGINE WITH THE SOLENOID OUT OF THE CARBURETOR EXCEPT FOR TESTING PURPOSES*** Sometimes the Plunger is Moving, Just Not Far Enough to Allow the Gas to Enter the Jets. 4- Depending on the Model Mower, it can Also be the Pickup Tube in the Gas Tank. If No Fire, then Remove the Shut Off Wire from the Coil and Check for Fire. If Still No Fire, then the Ign Module or Coil is Bad. **Even if the Coil is New of Fairly New, it can Still be Bad.** On JD Mowers; Remove the Igniter/Module and the Coil and have the Local JD Dealer Test them.
Please, Do Not Hesitate, If I Missed Something or you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

May 12, 2009 | Ariens Garden

1 Answer

I have a cub cadet model 3 1042 it starts but


Hello

After the Engine Stalls, Check the Plug for Fire. If No Fire then the Ign Module/Coil is BAd and Requires Replacing.
>>The Following is a Basic Instruction File I made for this. Any Input is Appreciated. I Usually Suggest you Check the Following in this Order for a Problem like yours. 1- Check the Gas Tank Cap and Ensure it is Venting the Tank. A Vacuum Builds in the Tank and the Gas Flow Stops or Slows (15 to 45 Minutes and if the Small Grainular Sand is in the Tank it can Take Several Days of Constant Running to Bring All the Sand Particales to the Tank Outlet Port) to a Point it Shuts Off the Engine. 2- Operate the Equipment Until it Quits (15min to 1hr). Then Immediately Check for Fire from the Plug. If the Plug is Firing, then 3- Check the Carburetor Solenoid. If the Carburetor Shut Off Solenoid has Current, then Remove the Carburetor Solenoid and Go to the Hardware Store. Purchase a Bolt of the Same Diameter and Threads. It Needs to be 3/4" Long. Put this Bolt in Place of the Solenoid. If this Corrects the Engine Problem, then Replace the Solenoid. ***NOTE: THIS IS FOR CHECKING THE SOLENOID ONLY I NEVER SUGGEST YOU OPERATE THE ENGINE WITH THE SOLENOID OUT OF THE CARBURETOR EXCEPT FOR TESTING PURPOSES*** Sometimes the Plunger is Moving, Just Not Far Enough to Allow the Gas to Enter the Jets. 4- Depending on the Model Mower, it can Also be the Pickup Tube in the Gas Tank. If No Fire, then Remove the Shut Off Wire from the Coil and Check for Fire. If Still No Fire, then the Ign Module or Coil is Bad. **Even if the Coil is New of Fairly New, it can Still be Bad.** On JD Mowers; Remove the Igniter/Module and the Coil and have the Local JD Dealer Test them.
Please, Do Not Hesitate, If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

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2 Answers

Craftsman 17.5 HP 42 in mower stops after approx 1/2 hour of use


I have an 18 HP B&S 42" Craftsman with the same problem. Carb has been rebuilt and fuel filter replaced. Have cleaned the vent hole in the fuel tank cap. Nothing has helped. Choking the throttle will keep it running for a few more seconds but it eventually stalls out only to start again in 5-10 minutes which keeps me thinking its a fuel, not electrical problem. Maybe overheating but how can you tell if its causing vaper lock?? Submitted by Redroadster.

Apr 27, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Dies after 10-15 min of use


Hello barcomb31:

>>The Following is a Basic Instruction File I made for this. Any Input is Appreciated. I Usually Suggest you Check the Following in this Order for a Problem like yours. 1- Check the Gas Tank Cap and Ensure it is Venting the Tank. A Vacuum Builds in the Tank and the Gas Flow Stops or Slows (15 to 45 Minutes and if the Small Grainular Sand is in the Tank it can Take Several Days of Constant Running to Bring All the Sand Particales to the Tank Outlet Port) to a Point it Shuts Off the Engine. 2- Operate the Equipment Until it Quits (15min to 1hr). Then Immediately Check for Fire from the Plug. If the Plug is Firing, then 3- Check the Carburetor Solenoid. If the Carburetor Shut Off Solenoid has Current, then Remove the Carburetor Solenoid and Go to the Hardware Store. Purchase a Bolt of the Same Diameter and Threads. It Needs to be 3/4" Long. Put this Bolt in Place of the Solenoid. If this Corrects the Engine Problem, then Replace the Solenoid. ***NOTE: THIS IS FOR CHECKING THE SOLENOID ONLY I NEVER SUGGEST YOU OPERATE THE ENGINE WITH THE SOLENOID OUT OF THE CARBURETOR EXCEPT FOR TESTING PURPOSES*** Sometimes the Plunger is Moving, Just Not Far Enough to Allow the Gas to Enter the Jets. 4- Depending on the Model Mower, it can Also be the Pickup Tube in the Gas Tank. If No Fire, then Remove the Shut Off Wire from the Coil and Check for Fire. If Still No Fire, then the Ign Module or Coil is Bad. **Even if the Coil is New of Fairly New, it can Still be Bad.** On JD Mowers; Remove the Igniter/Module and the Coil and have the Local JD Dealer Test them.
Please, Do Not Hesitate, If I Missed Something or you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

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