Is Popping Sound of Lawnmower due to my Squirting Oil in Spark Plug hole?
Question:I read in Scott's Lawncare book that when replacing my sparkplug for the season i should shoot in 15ml (0.5oz) of Motor Oil into the spark plug hole. My lawnmower is a gas driven. I used a suringe needle to do the job and it squirted in pretty fast. I then slowly pulled the cord of the engine to move the oil around to lube the engine. When i then offically started the mower (sparkplug reattached) i found that my mower began to smoke up (white smoke) and heard lots of popping sounds from muffler. I then turned it off and noticed splatters of oil just under the muffler area of mower. I then reasoned that my action of shooting oil may have done this.
OR IS IT POSSIBLE, that my tipping the lawnmower up (sparkplug up in the air) may have caused the existing oil in the system to somehow cause problems. OR even another possiblity, i just changed my Air filter on the mower and maybe it is not in correctly...
OR maybe when i changed the sparkplug it is Miss Firing?
Answers:
I have had that problem during some years with my lawn mower. After it runs for a while (with fresh gas in it) the smoke caused be oil in the cylinder will burn off and operation will be smooth again. Just keep it running till it is back to normal.
sounds like backfire get a new sparkplug first . If it still does it get new breaker points
I don't know how old a lawnmower you have, but the old standard is 10 thousandths for the magneto, 20 thousandths for the point gap and 30 thousandths for the spark plug.
If you have oil in the cylinder, it will not combust completely and the engine will miss a bit and blow bluish white smoke until the oil is burned out.
You air cleaner may be of various types. The older ones have oil in them that can run out and get in the cylinder when the mower is tipped. Later ones have a foam rubber filter element that is lightly impregnated with oil. If there is too much oil, it will cause the mower to misfire and smoke. I say just let it run until everything is proper.
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