Not getting gas to combustion chamber, leaking gas from exhaust
If I pour gas through the air intake or starting fluid mower starts and will run as long as there is gas. Gas tank is full. I checked gas line past the fuel filter and is there is gas in the line. I added some seafoam to help clean it up a little, but it just makes it smoke, (white smoke), from exhaust. I also replaced the spark plug
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if it is a mower motor then I suspect that the air filter is leaking dirty air into the cylinder and has dusted the motor
(worn rings from abrasion)
check that the oil level is not over full
it may require a ring job
Hi Again Mo:
A quick check would be to remove the air filter and prime the carb with a little squirt of gas. Sometimes they will start and keep right on running. My Craftsman has had that problem since the day I bought it new.
Sounds like you have a hole 'burnt' in the piston top allowing fuel combustion mixture (normally compressed above the piston) getting down into the crankase or that the piston rings are shot allowing the same thing.
As the piston is continuously moving, the reverse happens giving oil at the intake or carb.
. Looks like a strip down, good inspection and rebuild of engine required .
A backfire typically results from improper air to fuel ratio. An overly lean air-fuel mixture (i.e. an overabundance of air) can lead to a failure to ignite in the combustion chamber, also called a "misfire". The unburnt fuel then enters the exhaust system, where hot components can cause the fuel to ignite unpredictably. Alternatively, rich air-fuel mixtures (i.e. an overabundance of fuel) can result in incomplete combustion, again causing unburnt fuel to enter the exhaust system.
Sounds like your cylindes are not getting gas after shutting the engine down ..this happens if the engine continues to run a little after the ignition is shut off or have too much throttle when shutting down..pumping gas into the cylinder un burned..and when you try and start the unused gas is immediately ignited coming back through the intake valves and out the carb..two things let it idle diwn as low as it can and shut it down .another is to shut the fuel shutoff valve before shutting down and let the carb gas be used up..that will not allow gas into the cylinders..just remember to turn back on fir a few seconds to refill the carb bowl before starting..good luck..
sounds like the needle valve inside the carb has failed dumping gas into the crankcase and into the cylinder this overfills the oil and dumps it change the valve and seat change the oil a couple times add a fuel line shut off and run the carb out of gas when your done using it the newer fuel we get melts the rubber seal
can you put gas in the carb and give it a pull.if you can use somthing to sqirt the gas in you can keep it running for a few minetts and maybe dislodge any dirt that mite be in the chambers
posibly take an air hose and blow the carb out through the jets and gas line
you may have to take the carb in for a kit
somtimes they trimmers get warped between block and carb and **** to much air between them and it dos,nt get the gas it needs to start
Hi. Get a can of starter fluid from your local auto parts store and a helper. Squirt a little into the air intake, start it and have your helper continue to squirt more fluid to keep it running until you clean the gunk from your carburator. J.
the little solenoid on the bottom of your carb is letting gas flow while it is not runnung.therfore gas gets into your oil.About an 80.00 part..or you could just turn your gas valve off when your done mowing.but still you would have to eventually replace that part.hope this helps