Why would a lawn mower with new gas,plug and oil stop running soon after it starts?

i have a 1 year old lawn mower,this year it worked perfect the first time i used it now it stops running a few seconds after it starts..it has a new plug,gas and oil..i'm mechanically inclinded but this one bafuls me...please help don't want to buy anothewr new one a year later..thanksWhy would a lawn mower with new gas,plug and oil stop running soon after it starts?
I had this same problem with a snow blower and know exactly what you are going through. The carborator needs to be cleaned. It has ';gunk'; in it that keeps the carborator from mixing the gas and air properly. Take it apart and wipe it down with acetone to get all the gunk out of it and you should be good to go. For me, I kept the gas in my snow blower all summer long and it got gunked up from sitting. I thought it was just hard to get started, so I got some starter fluid and sprayed that into the carbourator and it would start right up but only run for about 5 seconds (until the starting fluid burned off) and then stall. Sound familiar? During the winter, either run your mower dry or put gas stabilizer in it so it doesn't gunk up.Why would a lawn mower with new gas,plug and oil stop running soon after it starts?
I did everything this guy recommended and it worked. Great answer Report Abuse

Could just need a tune up....take it to a small engine repair place. it should only cost about 30-40 bucks.
Take it to a small engine repair shop. For a small amount, they'll get it running again.





Possible causes:





Fuel tank is empty or shutoff valve is closed, or fuel line or fuel tank cap vent is clogged.


Carburetor is overchoked.


Carburetor is improperly adjusted or needs service.
Check the fuel line from the tank to the carb for blockages. Clean the carb with carb cleaner. Look in the fuel tank for debris that may be in there. May need a carb adjustment. Normally has one or two screws for this. Start by turning them all the way in and then back out 1-1/4 turns and adjust from there. Some newer mowers do not have adjustments.
Sounds like its choking. Try taking the carberator off. It might be getting too much or not enough air. We have one that does that. You have to cover the carborator with your fingert with a straw in there...or it gets too much air intake and dies.