To get to the gist, a few days ago the lawn mower had ended up on its side for about 10 minutes. I flipped it back over and didn't use it for about two days.

I started it today. At first it had a bunch of white smoke bellowing out, and a tad bit of oil splashes came out of the exhaust pipe. I kept running it until the white smoke stopped. Once the smoke stopped, a few seconds later the engine started knocking.

I immediately stopped the engine, and checked the oil, which was good.

I removed the spark plug cap to pull the cord and see what it sounded like, this is what it sounds like.

Any ideas of what the cause may be?

  • How did it get flipped over? If you hit something with your blades you could have knocked the timing off which could have caused issues. – Cody Pace May 6 '19 at 0:04
  • @CodyPace long story short, I was cleaning the bottom of it, and what I used to hold it up didn't have enough weight. It fell, hit my head, and I got pissed at it. slow clap – DrZoo May 6 '19 at 0:08
  • 3
    I assume you looked, but is the blade loose? – George May 6 '19 at 1:56
  • @George the blade is good. I actually just got it sharpened and put it back on. I also turned the blade by hand and the engine still made some not so good noises. – DrZoo May 6 '19 at 1:58
  • @George Well, I stand corrected. I flipped it up and grabbed the blade and shook it. It had a bit of shake to it. I torqued it down as hard as I could. I pulled on the cord with the spark plug out and there was no knocking. I fired it up and ran it for a minute or two, and no knocking occurred. – DrZoo May 6 '19 at 2:31

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