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  #1  
Old 07-06-2014, 06:20 PM
sareed sareed is offline
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Default 982 up and quits

Ok. Lets see who knows the answer to this. My 982 seems to sputter and shuts down when the engine warms up. Its has a Kohler 18 magnum in it so its single state. I replaced the stator coil, rebuilt the carb, put new fuel lines in new fuel filter new gas tank shutoff new plugs. When it is going to shut down i pull the choke out which seems revive it for a bit then eventually quits. I notice the fuel filter is only about half full after shutdown which indicates its not getting enough fuel? Someone suggested its vaporlocking?

Scott
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  #2  
Old 07-06-2014, 06:22 PM
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Jeff in Pa Jeff in Pa is offline
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Is the gas cap supposed to vented? If so, did you check to make sure it wasn't clogged?
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Old 07-06-2014, 06:29 PM
sareed sareed is offline
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Originally Posted by Jeff in Pa View Post
Is the gas cap supposed to vented? If so, did you check to make sure it wasn't clogged?
I just replaced it a few weeks ago with a new one. I also cleaned out the gastank. I dont think its clogged

Scott
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Old 07-06-2014, 06:33 PM
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Is the fuel filter in the correct way? ( there are arrows showing fuel flow direction )

As far as the vapor lock issue. Is it routed exactly as factory and are all heat shields in place?
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  #5  
Old 07-06-2014, 06:42 PM
J-Mech J-Mech is offline
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Originally Posted by sareed View Post
Ok. Lets see who knows the answer to this. My 982 seems to sputter and shuts down when the engine warms up. Its has a Kohler 18 magnum in it so its single state. I replaced the stator coil, rebuilt the carb, put new fuel lines in new fuel filter new gas tank shutoff new plugs. When it is going to shut down i pull the choke out which seems revive it for a bit then eventually quits. I notice the fuel filter is only about half full after shutdown which indicates its not getting enough fuel? Someone suggested its vaporlocking?

Scott
It's rare these motors vapor lock.

It's not single state, it's solid state ignition.

Why did you replace the stator? That is only for charging. Solid state ignition doesn't use the stator for anything.

It's common for the fuel filter to not be completely full. Does it still have a fuel pump?

Sound like a bad magneto to me. But better check to make sure it's losing fire and not fuel. These mags are so simple. I don't understand why people struggle with them. No points, needs no electricity to run. Just gas and a good spark. Your losing one or the other, figure out which one.
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Old 07-06-2014, 07:45 PM
sareed sareed is offline
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Originally Posted by J-Mech View Post
It's rare these motors vapor lock.

It's not single state, it's solid state ignition.

Why did you replace the stator? That is only for charging. Solid state ignition doesn't use the stator for anything.

It's common for the fuel filter to not be completely full. Does it still have a fuel pump?

Sound like a bad magneto to me. But better check to make sure it's losing fire and not fuel. These mags are so simple. I don't understand why people struggle with them. No points, needs no electricity to run. Just gas and a good spark. Your losing one or the other, figure out which one.
I didnt replace the stator. I replaced ths stator coil which runs to the plugs. It has spark because i pulled a plug out to test and the engine fired on one plug plus the plug i took out was sparking. It just sounds like its struggling to get gas when it shuts off. Ive been struggling with this motor for weeks. It does have a fuel pump but havent replaced that. Should I? I cant figure out whats wrong.
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Old 07-06-2014, 08:19 PM
J-Mech J-Mech is offline
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Originally Posted by sareed View Post
I didnt replace the stator. I replaced ths stator coil which runs to the plugs. It has spark because i pulled a plug out to test and the engine fired on one plug plus the plug i took out was sparking. It just sounds like its struggling to get gas when it shuts off. Ive been struggling with this motor for weeks. It does have a fuel pump but havent replaced that. Should I? I cant figure out whats wrong.
Ok, that's not a stator coil. It is a magneto, or as the parts book calls it, Ignition module. The stator or stator coil is behind the flywheel.

If it has a new mag, and good spark, then it can only be one thing. Fuel. Take the carb off and disassemble it. It must be plugged. I know, you "rebuilt" it. But that doesn't mean anything. If the fuel pump is in deed failing it will send pieces of the diaphragm into the carb and plug the jet. Seen it before.

IDK if the fuel pump is bad, test it. You can gravity feed this engine if necessary. Did you try running it with a full tank of fuel? The fuel pump is only really needed when the fuel level gets below carb level.
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Old 07-06-2014, 09:05 PM
sareed sareed is offline
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Originally Posted by J-Mech View Post
Ok, that's not a stator coil. It is a magneto, or as the parts book calls it, Ignition module. The stator or stator coil is behind the flywheel.

If it has a new mag, and good spark, then it can only be one thing. Fuel. Take the carb off and disassemble it. It must be plugged. I know, you "rebuilt" it. But that doesn't mean anything. If the fuel pump is in deed failing it will send pieces of the diaphragm into the carb and plug the jet. Seen it before.

IDK if the fuel pump is bad, test it. You can gravity feed this engine if necessary. Did you try running it with a full tank of fuel? The fuel pump is only really needed when the fuel level gets below carb level.
If the carb was plugged, wouldnt it run at all? And why only does it shut off only after the engine heats up? What is an effective way to test the fuel pump? If i override the fuel pump do i have to close up the pump somehow? I think briggs makes a fuel pump you can add onto the fuel line. Would that work?

Scott
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Old 07-06-2014, 09:55 PM
Mcamp Mcamp is offline
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Run a fuel line from your tank directly to the carb,[that bypasses the fuel pump],fill your tank to at least 3/4s full and see if it will run, if it runs good this way your pump is probably bad.
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Old 07-06-2014, 10:21 PM
J-Mech J-Mech is offline
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Originally Posted by sareed View Post
If the carb was plugged, wouldnt it run at all? And why only does it shut off only after the engine heats up? What is an effective way to test the fuel pump? If i override the fuel pump do i have to close up the pump somehow? I think briggs makes a fuel pump you can add onto the fuel line. Would that work?

Scott
If the needle valve was plugged, it would run long enough to run the bowl dry. Then, the bowl fills and it starts back up. Unless you used a used coil, I don't think this has anything to do with engine temp.

There are several ways to test a fuel pump. IMHO, best was is a small container of fuel. Take both lines off the pump, put longer fuel lines on the pump and set the container lower than the pump. Crank the engine with the suction hose in the fuel, and holding the other one so you can see if it pumps fuel. It will take a few seconds for it to prime, but it should pump fuel.

If you are just bypassing it to test, no you don't have to cap the pump. If you are taking it out of the system and using a different pump (don't know why you would) then I would take it off the block completely, and put a plate over it.

Why on earth would you use a briggs fuel pump? The Kohler ones are still available. If you don't like the price there are others. Some have had bad experiences with aftermarket pumps. I have used both Kohler and aftermarket. Kohler lasts longer. It's worth the $70.
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