I just purchased a new Murry Rider with this engine and started mowing with it and once in a while, it will bog down, a lot of smoke will come out the exhaust, and then go back to normal operation. I maybe have an hour on the motor/tractor. Is this commom for this to happen in the "break in" period of 5 hours? Thanks for any and all help.

BTW, the oil level is fine. :p

black or white smoke ? carb may be outta adjustment if its black, of course i don't know if murray's going outta buisness or will stay in it for a while.

Thanks for the reply.

I checked with a repetable small engine shop and they told me that it was normal that it did it once in a while. It is the rings seating in the engine. He said it should stop doing that after a few hours of operation. He said make sure that it's not doing it all the time. I mowed for a while last evening and it is doing it far less that when I first started. I think it'll be okay, for now.

Thanks again for the help.

Heath

well, yeah rings seating....as long as it doesn't keep doing it..... then you should be good, had to rule out the black smoke.

No black smoke, kinda blue/greyish...That's what i figured out at first and I was right so it's cool. I do appriciate everyone's help so far.

Am I crazy for saying I want my yard to grow so I can use my new rider again?? lol :p

nope, your not crazy, i myself bought a new one, can't wait for it to grow back.

:lol: Just glad we'll be roomies at the state hospital...lol

Thanks again for the help.

This blue smoke you are seeing is NOT normal. With all due respect to the shop that passed on the "ring seating" theory, I beg to differ. Rings are either seated or they are not. Rings that havn't fully seated will offer a steady, light blue/gray fog that slowly gets better as time goes by. The time I refer to is a few hours time.

Running along just fine and then belching a blue fog indicates that somehow the engine has been served a blast of motor oil to burn. Don't let ANYONE tell you this normal. As for what it is, I suspect a faulty breather as a first thought.

Take the mower back and get another one!!!

Mike

I have put more time on this engine and that "break in" smoke is almost nonexistant now.

Thanks for all the help!

Heath

I have to agree with mike on this one. It is not normal for a new motor to belch smoke like that. Like he said, rings are either seated or they aren't.

In all the new engines I have installed and all of the engines I have rebuilt (trust me, it's alot of motors) I have never had one show this kind of behavior. Even though you said the oil is fine, I suspect it may be slightly overfilled...or like mike said you may have a faulty breather.

Even if the motor has stopped showing this behavior, I would still check everything over. This is especially true since a bad breather can cause you alot of problems down the road with blown sump gaskets and oil seals.