Garden

Runs good at start then after 10 mins starts getting weak and dies without choking it
Experienced gardeners share their insights in answering this question :
Could be ‘Vapour lock’ when it dies, try opening the fuel tank and see if it starts back up.! If it starts and runs fine then I would put the cause down to a faulty tank vent, which isn’t allowing air back into the tank to compensate for the fuel being drawn out meaning the saw is struggling to draw fuel out the tank as its in a vacuum.

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As the fuel level drops, a vacuum begins to form in the fuel tank because air can get in to fill the space the consumed fuel occupied. After about 10 or 15 minutes, the vacuum will become strong enough that fuel will stop flowing to the carburetor and the lawnmower will die.
A dirty carburetor is the most common cause of a lawn mower that starts and then dies. Other possible causes include: Stale/Dirty Gas. Faulty Choke.
Condensation inside the gas tank is one culprit, but moisture can also enter the system through a loose or ill fitting gas cap. The best solution is to drain the mower`s gas tank and refill it with fresh gasoline. A clogged fuel filter can also cause a mower engine to die.
Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas. If this doesn`t work, you might need a new fuel filter.
Electric lawnmowers may cut out for two main reasons: A faulty power switch or a loose cable connection. An overheating motor can cause the thermal cut out to trip.
Blocked cooling fins may be one of the more common causes of overheating in mowers specifically, since all the grass and debris from lawns or fields can easily end up in the cooling fins, keeping air from circulating and cooling the engine down.
Your lawn mower runs for 30 minutes then dies if you are having issues such as a bad spark plug, air problems, a malfunctioning carburetor, or a faulty gas cap. You may even encounter the issue that your lawn mower runs for 5 minutes then dies.
Other things that could cause this issue are bad fuel, weak/colapsed/kinked fuel line, faulty spark plug, faulty ignition/coil, oil over full, clogged air filter, plugged/dirty carburetor, worn engine parts internal rings/valves/etc.
The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance.
A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.
You Lose Power in the Middle of Mowing:

Here`s why this happens and what you can do: Dirty Air Filter on Your Lawn Mower: Clean or replace. Dirty Spark Plug: Clean or replace. Build Up of Clippings & Debris: Clean underside of your lawn mower deck as noted above.

If your lawnmower will start and run with the choke on but dies when the choke is turned off, it may have a problem with the carburetor. The carburetor brings air and fuel together and mixes them in the perfect ratio for combustion before they enter the engine.
This is most likely a safety switch issue. Usually the seat safety switch will cause this problem. The mower dies because it thinks nobody is sitting in the seat, and shuts off for safety reasons.
The most likely culprit is a dirty or clogged air filter. Issues with your fuel pump or fuel filter can also cause your engine to idle then die with any throttle. If you have an older car, it could also be a bad carburetor.
There may be dirt, water or stale fuel in the tank. Drain the fuel and clean the tank – see our video here. Check to see if the vent hole in the fuel tank is clogged – if so, clean or replace the fuel tank cap. Check whether the air filter element is dirty.
The most likely culprit is a dirty or clogged air filter. Issues with your fuel pump or fuel filter can also cause your engine to idle then die with any throttle. If you have an older car, it could also be a bad carburetor.

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It won’t stay running. have cleaned the gas tank and it just had a tune up. runs fine then gets rough and quits. If I push the bulb it smooths out and runs fine for a couple of minutes and then begins hesitating again. Now today it ran for about 15 min. and now it won’t start. It wants to. runs for a couple of seconds 5-10 and then quits.
ANSWER : Remove the float bowl and empty the contents out clean and replace

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Oil is fine, runs fine for about 10 minutes then bogs down and dies. Let it sit for 10 minutes it will start again and run fine for another 10 minutes. Used to be 20 minutes, then 15. The cooler the weather the longer it runs. Is there some electrical component that may be getting weak? 17.5 hp Briggs. Air cooled. Air filters have been changed but didn’t help. Plug wire?About 5 yrs old. Help – It’s taking six hours to mow………..
ANSWER : It could easily be an electrical issue, or not. Get a spark tester (hooks up to the spark plug). Pep boys, Autozone, and Napa all sell them for less than $10. Check for spark when the mower has quit. If no spark, most likely need to replace the ignition module. Also check the flywheel key, if it is has been sheared or even knicked, the engine will run hot.If you still have spark when engine has failed, check the vent on the gas cap. A clogged vent will cause a vacuum to form in the tank and stall the engine.Good luck!

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New pressure washer runs starts and runs for 30-45 minutes with no problems then dies and will not restart. Once it cools for a few minutes it will restart but will die again quickly. If it is allowed to sit for 30+ minutes it will run for another half hour but then dies again. Changed oil, gas, checked all obvious areas. Any suggestions?
ANSWER : Try removing the carb bowl and check for dirt/water etc , also if the machine is over heating it may be getting vapour locked

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Blower only runs with full choke. When I switch to half choke, it dies and won’t start.
ANSWER : It may simply need the high speed jet opening up a bit (2 screws near eachother on the carb and the high speed is furthest from the engine)failing that it needs a carb kit…. this is a serviceable item changed regularly.

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Seems to start easily run for a few minutes and then slow and stop–bulb remains full –gas is good–have tried half choke in case too lean–did not solve–also seems possibly related to the angle I hold it at–seems to cut out quicker if blower tube angled more downward.
ANSWER : Your filter may be hanging up in the tank. you also my be losing compression

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Starts right up on choke. then run inrun position for a minute and have to go back to choke to keep it running ,then it runs fine for a couple of minutes and have to go back to choke and start all over again.
ANSWER : This happens with the cover off, so not the filter.

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It’s brand new, when I finally get it started it will run good for about 1 min. or less, and then it dies. I pull the choke out all the way, pull it a couple of times, push it half way in, it starts but it’s like it doesn’t have the power to turn the chain, bogging out and then it dies, I will never buy another homelite product, or recommend anyone else to, this is my second one, the first one leaked gas, Home Depot really should quit selling them, there making you look bad too!!
ANSWER : Hi paulbonser… Set your point gap to .20 using a feeler gauge… You can also use a paper matchbook cover, it ia approx. .20 to set the gap on the points. Please take time tor rate me

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Starts runs a couple of minutes then dies – Echo Gas Blower 135 MPH390 CFM Blower PB250
ANSWER : It
sounds like you have a bad Ignition Coil (Module). This is how they act
when they start going bad. When they get warm, they quit. Some will
last up to 20 minutes before they shut down. You can sometimes find a
used one pretty cheap at a small engine shop.Jim

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