Garden

This engine just will not start when its warm after just 15mins or so running
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Bad valve seat need vavle job done

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Some of the B&S auto choke carburetors tend to supply too much fuel to the cylinder when hot starting; this floods the spark plug, causing a no start. They have since modified the carburetor. So if you have an auto choke, Briggs, with the hot start problem, go ahead and swap out the carburetor.
Loose bolts are a common culprit in a mower engine that shuts down when hot. Check and tighten the bolts that hold the carburetor in place, the bolts that tie the air intake manifold to the block and the bolts that hold the head to the engine block.
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.
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.
If your car is hard to start when warm, it could be due to a few different reasons. However, the most commonly noted cause for such a problem is the engine coolant temperature sensor.
If the heat riser is stuck in the closed position it will cause excessive heat under the carburetor and boil the fuel causing flooding and hard starting when the engine is hot. 3. When there is excessive fuel pressure. Excessive fuel pump pressure can be caused by a defective or worn out fuel pump.
It is usually caused by a lean fuel mixture – ie.) not enough fuel in the fuel-air ratio. This is controlled by your carburettor and governor.
Mower overheating can be caused by a number of things, most of which, unlike the weather, are preventable: Low engine oil can cause some real damage to a lawn mower as it runs. The un-lubricated friction between parts can overheat and wear out the parts.
If your lawn mower starts, runs for a while, then dies, check the ignition coil, gas cap, and spark plug. One or more of these parts could be causing your problem. Follow our repair and symptom guide to help you fix this.
If your lawn mower starts, runs briefly, then dies these are the four most common reasons that`s happening: Dirty carburetor / clogged carburetor bowl. Old gasoline that has gone bad. Dirty or defective spark plugs.
That problem may suggest you need to clean the throttle body, replace fuel filter, replace air filter, replace spark plugs or have fuel injector problems (I had mine cleaned and balanced and it helped my start-ups alot).

Discover Relevant Questions and Answers for Your Specific Issue

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Engineer starts, and stop – Mtd 22" Yard Machine Push Mower
ANSWER : Clean fuel system
lines
tank
carburetor main jet, float bowl
check cable/linkage adjustments

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Engine starts sputters then shuts off – Briggs & Stratton Lawn-Boy Insight Series 21-Inch 190cc 650 Series Gas Powered Engine Variable Speed Self-Propelled Lawn Mower
ANSWER : Probably a dirty carb. or if this problem is occuring when the engine has been run and is hot and its the new style easy start engine with auto choke ( no primer or choke lever) then the auto choke unit coud be faulty

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Honda gx200The water blaster just stopped and I change the spark plug but still only a very small spark that is when it sparks?Coil buggered?
ANSWER : Very small spark okay as long as its blue and not bright yellow.try using starting fluid if runs might want to see if carburetor is getting fuel.

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My mantis tiller with a honda gx22 engine starts then shuts off after approx. 30 sec.
ANSWER : If your unit has a primer bulb, start your engine . When it starts to die push your primer, if the engine comes back to life you have a carb issue.

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18 hp kohler engine starts but doesn’t keep running!!!!
ANSWER : You put in a question about your ride on. What is it you need?

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Wont start no ignition put new plug in and fuel filter
ANSWER : Flush gas tank, fill with fresh gas and Stabil. Replace air filter. Remove bowl from carb clean bowl and holes in bowl screw.

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My 23 hp Kawasaki engine runs until it get warm, it will then stall and is hard to start after that. It seems to me as if something is cutting the fuel off, What could it be?
ANSWER : When it begins to stall, loosen the gas cap. If performance improves, clear the gas cap vent holes.

Gary

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The oil pressure light comes on when i idle down the engine and one time it shut down and would not start back i let it sit for several hours and it started back and is running fine but the oil light still comes on when i idle it down
ANSWER : So, tell me have you checked your oil level? that would be the first thing to do then check your oil pressure switch and /connections

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