I have a Yard Machines 3.5 HP single-stage snow thrower with a 2-cycle engine. It has been tempermental this winter (and last) but pretty much follows a very odd trend. After I get it started, which may take some effort, it will run fine for about 5 minutes. Then it bogs down like the choke somehow got flipped on and it will eventually die. I have checked the choke many, many, many times, with no result. If I let it sit and cool off for 5-10 minutes, it will (sometimes) start back up and then will do the same thing after about 5 minutes.
WHAT IS UP WITH THIS ENGINE? I can't figure it out.
2007-02-14 13:33:33 · 5 answers · asked by elpetay 2 in Home & Garden ➔ Maintenance & Repairs
A two cycle engine has internal REED valves, Those valves become gummed up with oil and goop and dont operate properly causing the engine to actually "blow back thru the carberator" instead of providing a steady suction.
Get some ordinary Carb cleaner and remove that top plate which houses the filter, then as the engine is running at medium speed, spray a generous amount of that cleaner into the engine intake. Do this several times until those Reed valves clean up good. This is a common problem with 2 cycles and is often misdiagnosed as a "carb" problem when in fact it is not.
2007-02-14 13:42:34 · answer #1 · answered by James M 6 · 0⤊ 1⤋
It can be a few things.
1) Fuel left in the tank from last year. If there was no stabilizer put in with the fuel and run through for about 10 minutes then the fuel breaks down and messes up the engine.
2) Try changing the spark plug
3) Did you mix oil in with the fuel and is the fuel fresh?
I hope this helped.
2007-02-14 21:44:13 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The fuel line may need to be replaced. The fuel line may have dry rotted and is now drawing air......or if you have left gas in it for an extended period of time....well the gas gets gross and gummy sort of, and will choke it off. This is just some things that have happened here....with our different types of 2 cycle engines.
2007-02-14 21:47:08 · answer #3 · answered by mrs_endless 5 · 0⤊ 0⤋
I had this exact same problem. It turned out that I had a head gasket, and once the head would warm up it would lose compression. Then after about another 5 minutes of cooling it would start after alot of effort (same effort as when first starting.) Hopefully it is a tank venting problem as another previously mentioned.
2007-02-14 22:11:51 · answer #4 · answered by NubbY 4 · 0⤊ 0⤋
Had the same problem once. seems like the fuel tank did not have a vent to let air in. otherwise its an electronic ignition problem (coil).
2007-02-14 21:46:06 · answer #5 · answered by La-z Ike 4 · 0⤊ 0⤋