We just bought a used rear engine riding mower, runs good and cuts good. But after my hubby mowed our acre, when he turned it off he said it spit flames out the back...maybe from the muffler??? It only did it for a second, but we would like to know whats wrong with it so we can try to fix it.....did it get too hot or what?? I need help please!
2007-09-16 09:50:42 · 5 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
There are some good answers here. The most likely cause is as mentioned, hot muffler and fuel cause the backfire. It is always a good idea to let the machine run for a couple of minutes at idle after hard use. That allows the engine to cool itself down. You might check the air flow through the cowling. It could be pluged with grass and causing the engine to run a bit hot. One other thing could be that the engine is running a bit rich.
2007-09-16 13:22:01 · answer #1 · answered by renpen 7 · 1⤊ 0⤋
when the engine gets up to operating temperature the muffler is red-hot. Then you cut the ignition off and the engine is still spinning and drawing in fuel from the carb. Since the ignition is not burning the fuel in the cylinder it goes on out to the muffler which is still red hot. When the raw gasoline hits the red hot muffler it explodes there making a big BANG, and the neighbors hit the ground thinking you are shooting at them! LOL
Try letting the engine cool down for about 3 minutes then cutting it off. That may help in neighborhood relations!
2007-09-16 13:23:15 · answer #2 · answered by Bart S 5 · 1⤊ 0⤋
sometimes when you kill a small engine, the gas is still fed into it for just a second, basically, it ends up making it for a bit of the engines cycle, ie. backfiring, it probably backfired when it did the flames im assuming? not to much to worry about with it, alot of small engines can do that, one possible fix is that if the idle is up to high when the engine is grounded out (turned off).
2007-09-16 09:58:27 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Could be a back fire after he tried to kill it. Sometimes happens and not much you can do about it.
You might try a new spark plug, air filter and oil. I don't think that'll solve your problem but I think it'll prolong the life of the mower.
2007-09-16 12:03:24 · answer #4 · answered by rann_georgia 7 · 0⤊ 0⤋
That happens a lot. Try letting it idle a minute or so before turning it off.
2007-09-16 13:07:16 · answer #5 · answered by Lear B 3 · 0⤊ 0⤋