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Yard Machine MTD17HP OHV
#1
T
tstimac64
T
tstimac64
I have a 2008 Yard Machine MTD17HP OHV and after running for about 5-minutes it will stall. It will restart after about 10 minutes setting. Restart it and it runs about another 5-minutes. I can not figure it out. Does someone have any ideas ? All help will be appreciated.
#2
D
DaveTN
Check for water or trash in the float bowl. Check fuel flow with float and needle by moving the float up and down with your finger, make sure it's cutting off and flowing etc. Squirt out the main pickup jet while you've got the bowl off. Could be a piece of foreign material blocking fuel flow to the needle, or a blockage in the pickup tube. When you let it sit for a while, it will move off the inlet, but sooner or later it will go back over the inlet going to the needle and bowl and starve for fuel again. Hope this helps.
D
DaveTN
I have a 2008 Yard Machine MTD17HP OHV and after running for about 5-minutes it will stall. It will restart after about 10 minutes setting. Restart it and it runs about another 5-minutes. I can not figure it out. Does someone have any ideas ? All help will be appreciated.
Check for water or trash in the float bowl. Check fuel flow with float and needle by moving the float up and down with your finger, make sure it's cutting off and flowing etc. Squirt out the main pickup jet while you've got the bowl off. Could be a piece of foreign material blocking fuel flow to the needle, or a blockage in the pickup tube. When you let it sit for a while, it will move off the inlet, but sooner or later it will go back over the inlet going to the needle and bowl and starve for fuel again. Hope this helps.
#3
ILENGINE
ILENGINE
If you have a fuel solenoid on the bottom of the carb, Next time it die, turn off the key and then back on to see if you can hear a click from the solenoid. sometimes they will short out and stop working, sometimes only for a few seconds after dying. On the briggs with the walbro carbs, I have seen the plastic tip come off and will kill the engine. On most of those you can turn off the key and then restart the mower and it will run until the tip come off again. Have epoxied more than one due to that problem.
#4
T
tstimac64
I pulled the carb off yesterday. It is all clean. I replaced the fuel line. When it stalls, the clear fuel filter has ( NO ) fuel in it. I took the shut-off solenoid off the bottom of the carb bowl and removed the rubber tip. Same issue, runs for 5-minutes then stalls. Then I cut off about 1/4 inch of the plunger from the fuel shut-off solenoid. It then ran for about 10-minutes then stalled again. No fuel in the clear filter. I am at a lost. Should I replace the fuel solenoid shut-off ? Any help will be appreciated.
T
tstimac64
Check for water or trash in the float bowl. Check fuel flow with float and needle by moving the float up and down with your finger, make sure it's cutting off and flowing etc. Squirt out the main pickup jet while you've got the bowl off. Could be a piece of foreign material blocking fuel flow to the needle, or a blockage in the pickup tube. When you let it sit for a while, it will move off the inlet, but sooner or later it will go back over the inlet going to the needle and bowl and starve for fuel again. Hope this helps.
I pulled the carb off yesterday. It is all clean. I replaced the fuel line. When it stalls, the clear fuel filter has ( NO ) fuel in it. I took the shut-off solenoid off the bottom of the carb bowl and removed the rubber tip. Same issue, runs for 5-minutes then stalls. Then I cut off about 1/4 inch of the plunger from the fuel shut-off solenoid. It then ran for about 10-minutes then stalled again. No fuel in the clear filter. I am at a lost. Should I replace the fuel solenoid shut-off ? Any help will be appreciated.
#5
T
tstimac64
I pulled the carb off yesterday. It is all clean. I replaced the fuel line. When it stalls, the clear fuel filter has ( NO ) fuel in it. I took the shut-off solenoid off the bottom of the carb bowl and removed the rubber tip. Same issue, runs for 5-minutes then stalls. Then I cut off about 1/4 inch of the plunger from the fuel shut-off solenoid. It then ran for about 10-minutes then stalled again. No fuel in the clear filter. I am at a lost. Should I replace the fuel solenoid shut-off ? Any help will be appreciated.
T
tstimac64
If you have a fuel solenoid on the bottom of the carb, Next time it die, turn off the key and then back on to see if you can hear a click from the solenoid. sometimes they will short out and stop working, sometimes only for a few seconds after dying. On the briggs with the walbro carbs, I have seen the plastic tip come off and will kill the engine. On most of those you can turn off the key and then restart the mower and it will run until the tip come off again. Have epoxied more than one due to that problem.
I pulled the carb off yesterday. It is all clean. I replaced the fuel line. When it stalls, the clear fuel filter has ( NO ) fuel in it. I took the shut-off solenoid off the bottom of the carb bowl and removed the rubber tip. Same issue, runs for 5-minutes then stalls. Then I cut off about 1/4 inch of the plunger from the fuel shut-off solenoid. It then ran for about 10-minutes then stalled again. No fuel in the clear filter. I am at a lost. Should I replace the fuel solenoid shut-off ? Any help will be appreciated.
#6
ILENGINE
ILENGINE
You don't have something floating around in the fuel tank that is cutting off the fuel flow do you. Also may sure the fuel cap is venting.
#7
D
DaveTN
If there is NO fuel in the filter, that would indicate to me that either the fuel pump is going out, or some obstruction as mentioned before. You said you went through the carb and fuel lines, so the only thing left is the fuel pump. Wouldn't hurt to do a "Jug Test" and find a tank and elevate it somehow and let it gravity feed into the carburetor and see if that helps. If so, then rebuild the fuel pump. Hope this helps.
D
DaveTN
I pulled the carb off yesterday. It is all clean. I replaced the fuel line. When it stalls, the clear fuel filter has ( NO ) fuel in it. I took the shut-off solenoid off the bottom of the carb bowl and removed the rubber tip. Same issue, runs for 5-minutes then stalls. Then I cut off about 1/4 inch of the plunger from the fuel shut-off solenoid. It then ran for about 10-minutes then stalled again. No fuel in the clear filter. I am at a lost. Should I replace the fuel solenoid shut-off ? Any help will be appreciated.
If there is NO fuel in the filter, that would indicate to me that either the fuel pump is going out, or some obstruction as mentioned before. You said you went through the carb and fuel lines, so the only thing left is the fuel pump. Wouldn't hurt to do a "Jug Test" and find a tank and elevate it somehow and let it gravity feed into the carburetor and see if that helps. If so, then rebuild the fuel pump. Hope this helps.
#8
T
tstimac64
It is a gravity feed. No fuel pump.
T
tstimac64
If there is NO fuel in the filter, that would indicate to me that either the fuel pump is going out, or some obstruction as mentioned before. You said you went through the carb and fuel lines, so the only thing left is the fuel pump. Wouldn't hurt to do a "Jug Test" and find a tank and elevate it somehow and let it gravity feed into the carburetor and see if that helps. If so, then rebuild the fuel pump. Hope this helps.
It is a gravity feed. No fuel pump.
#9
T
tstimac64
I removed the fuel cap to make sure it was venting. It is a gravity feed to the card. I do not understand why the filter keeps emptying.
T
tstimac64
You don't have something floating around in the fuel tank that is cutting off the fuel flow do you. Also may sure the fuel cap is venting.
I removed the fuel cap to make sure it was venting. It is a gravity feed to the card. I do not understand why the filter keeps emptying.
#10
T
tstimac64
Does the carb have a fuel pump diaphram in it ? I do not see an external fuel pump. Fuel line goes from tank to filter then to carb.
T
tstimac64
I removed the fuel cap to make sure it was venting. It is a gravity feed to the card. I do not understand why the filter keeps emptying.
Does the carb have a fuel pump diaphram in it ? I do not see an external fuel pump. Fuel line goes from tank to filter then to carb.
#11
D
DaveTN
Try going from the empty filter back through the fuel line to the tank and make sure you have good gas flow at every spot. Definitely fuel starvation but you'll have to check everything, blow out the lines, check the tank filter too. Said you checked the gas cap vent. Since you can see the filter is empty, what about the line going on to the carburetor? And the carburetor bowl...is it empty as well? If that's the case, then the restriction is somewhere back of the filter going to the tank. There's a GREMLIN in there hiding someplace! I had an old Ford mower doing a similar stunt. Start up and run great, then in a couple of minutes start stalling out, sputter and nearly die. Barely got back to the garage with it on 2/3 choke or full choke at times. Belonged to a neighbor. I went thru that fuel system back and forth only to find that it was a piece of foreign material in the "L" shaped fuel inlet fitting to the carb! At times it would float off the inlet and fuel would flow, then it would get sucked down on the inlet and starve it. This repeated for many days until I took off the fuel inlet, removed the needle and blew it out. That's the only thing I can imagine would cause such starvation. But may not be the case since you've got no fuel in the filter. Even if the fuel inlet float needle was stuck shut, the engine wouldn't start and you'd have a full line of fuel back thru the filter to the tank. Just for experiment sake, take another gas tank, say off a push mower and run a line to the carburetor and see what it does. You can rig one up, which is what I did on the Ford and that will help narrow things down a bit. As far as the fuel pump being in the carb, no it isn't. The fuel pump would be an external, rectangle-shaped thin unit with metal cover bolted on, most likely mounted on the engine or near it. Diaphragm,spring, vacuum operated. Good Luck!
D
DaveTN
Does the carb have a fuel pump diaphram in it ? I do not see an external fuel pump. Fuel line goes from tank to filter then to carb.
Try going from the empty filter back through the fuel line to the tank and make sure you have good gas flow at every spot. Definitely fuel starvation but you'll have to check everything, blow out the lines, check the tank filter too. Said you checked the gas cap vent. Since you can see the filter is empty, what about the line going on to the carburetor? And the carburetor bowl...is it empty as well? If that's the case, then the restriction is somewhere back of the filter going to the tank. There's a GREMLIN in there hiding someplace! I had an old Ford mower doing a similar stunt. Start up and run great, then in a couple of minutes start stalling out, sputter and nearly die. Barely got back to the garage with it on 2/3 choke or full choke at times. Belonged to a neighbor. I went thru that fuel system back and forth only to find that it was a piece of foreign material in the "L" shaped fuel inlet fitting to the carb! At times it would float off the inlet and fuel would flow, then it would get sucked down on the inlet and starve it. This repeated for many days until I took off the fuel inlet, removed the needle and blew it out. That's the only thing I can imagine would cause such starvation. But may not be the case since you've got no fuel in the filter. Even if the fuel inlet float needle was stuck shut, the engine wouldn't start and you'd have a full line of fuel back thru the filter to the tank. Just for experiment sake, take another gas tank, say off a push mower and run a line to the carburetor and see what it does. You can rig one up, which is what I did on the Ford and that will help narrow things down a bit. As far as the fuel pump being in the carb, no it isn't. The fuel pump would be an external, rectangle-shaped thin unit with metal cover bolted on, most likely mounted on the engine or near it. Diaphragm,spring, vacuum operated. Good Luck!
#12
ILENGINE
ILENGINE
A few years ago had a customer complaint that the 3 gallon fuel tank on his rider would run until about the last inch of fuel in the tank. Found a dead fly in the fuel tank that had hardened from the exposure to the gas. He would float in the tank until about the last inch of fuel, then would get sucked down on the tank fuel outlet, and shut off the fuel flow.
#13
T
tstimac64
You were correct. I found 2-dead flys in the fuel filter. It runs fine now. Thanks for all the help.
T
tstimac64
A few years ago had a customer complaint that the 3 gallon fuel tank on his rider would run until about the last inch of fuel in the tank. Found a dead fly in the fuel tank that had hardened from the exposure to the gas. He would float in the tank until about the last inch of fuel, then would get sucked down on the tank fuel outlet, and shut off the fuel flow.
You were correct. I found 2-dead flys in the fuel filter. It runs fine now. Thanks for all the help.
#14
D
DaveTN
D
DaveTN
Good Lord!! Could somebody explain to me HOW a fly, let alone TWO got into a fuel tank or fuel system? You'd think gas fumes would drive anything away! I cleaned out a 5 HP side shaft B&S last year that had at least 1 inch of roofing tar-like substance in the bottom. Pickup screen completely hardened over. Had to use baking soda, and shake rocks around in it, on a hot plate to knock it loose and pour it out. Never did see any preserved flies in it. Amazingly it cleaned up great! Flies in the ointment? Wow!
#15
ILENGINE
Had a rider come in about 5 years ago with fuel starvation. couldn't get fuel out of the tank. Pulled the line off at the fuel filter, and back blew the fuel line with an air hose, and found that the fuel line was packed with grass clippings, some of which were 4 inches long. Had to pull the tank and drain and rinse to get all the grass out of the tank.
ILENGINE
You were correct. I found 2-dead flys in the fuel filter. It runs fine now. Thanks for all the help.
Had a rider come in about 5 years ago with fuel starvation. couldn't get fuel out of the tank. Pulled the line off at the fuel filter, and back blew the fuel line with an air hose, and found that the fuel line was packed with grass clippings, some of which were 4 inches long. Had to pull the tank and drain and rinse to get all the grass out of the tank.