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NAKID
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« on: May 31, 2008, 09:55:41 PM » |
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What would cause oil to come out of the muffler?
I last used the mower a couple weeks ago and all was fine. Today I go to start it as always and it doesn't start right away like normal. I pull it a couple more times and I see oil dripping out of the muffler. It finally starts and then dies. Starts again and sputters a bit as the oil burns off. After a couple mins it runs just fine, like nothing ever happened.
The mower is a Briggs and Stratton 5hp 4 cycle gasoline engine from Yard Machines...
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Jobu
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« Reply #1 on: May 31, 2008, 10:23:29 PM » |
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1. Are you positive it was oil? Not just carbon-fouled water. 2. Are your valves in spec?  Seriously, oil out the exhaust is never a good thing. Think about how the oil would get there. First it has to get around the piston - bad piston ring. And then out the exhaust valve. But being that's it a lawnmower, I wouldn't worry too much about as long as it seems to be working alright. Oh, and I didn't that one could actually get grass to grow in Arizona. |
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NAKID
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« Reply #2 on: May 31, 2008, 10:29:47 PM » |
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Yeah, it was definitely oil. I saw and thought it may be dirty water, but it was oil. The smoke screen when it started confirmed that.
I know how it could get there, but was asking why.
And yeah, we get grass to grow. I was mowing my back yard but just put down 1500 sqft of BOBSod in the front yard...
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IZ
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« Reply #3 on: May 31, 2008, 10:49:20 PM » |
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WTF Chris?!
How could oil come out of an electric lawn mower?!
Oh..you don't have a plug-in electric lawn mower like the rest of the state!!
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2018 Scrambler 800 "Argento" 2010 Monster 1100 "Niro" 2003 Monster 620 "Scuro"  This just in..IZ is not that short..and I am not that tall.
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NAKID
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« Reply #4 on: May 31, 2008, 10:55:16 PM » |
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Screw that. Those things are pieces of junk!
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2005 S2R800
2006 S2R1000
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IZ
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« Reply #5 on: May 31, 2008, 10:58:02 PM » |
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Screw that. Those things are pieces of junk!
no sh*t!! I had to get one though for my lil' patch of grass in AZ.  I gave it to my sis before leaving. |
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2018 Scrambler 800 "Argento" 2010 Monster 1100 "Niro" 2003 Monster 620 "Scuro" This just in..IZ is not that short..and I am not that tall.
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Ddan
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« Reply #6 on: June 01, 2008, 02:53:12 AM » |
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It's a Briggs. Run it.
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2000 Monster 900Sie, a few changes 1992 900 SS, currently a pile of parts. Now running flogged successfully NHMS 12 customized. Twice. T3 too. Ducati Monster Forum at www.ducatimonsterforum.org |
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BWClark
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« Reply #7 on: June 01, 2008, 03:49:31 AM » |
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You're not storing it on its side are you? My grandfather was adamant that I didn't store his or my lawnmower on its side, saying that he reckoned oil would seep into places it didn't belong....  |
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ducpainter
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DILLIGAF
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« Reply #8 on: June 01, 2008, 03:54:11 AM » |
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I have an old Briggs that if tipped too far towards the muffler side will do the same thing. It's only about 30 years old, so I don't think it's worn out.  |
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ODrides
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« Reply #9 on: June 01, 2008, 06:47:19 AM » |
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Pouring oil into the air filter because you can't find the oil fill tube could do it. So I've heard.
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Howie
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« Reply #10 on: June 01, 2008, 06:50:16 AM » |
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Unless it was recently tipped on it's side a compression test is in order.
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junior varsity
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« Reply #11 on: June 01, 2008, 07:52:37 AM » |
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Just stick a bunch of photovoltaic panels on the top of it, and call it a day. I hear you guys have lots of potent sun.
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NAKID
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« Reply #12 on: June 01, 2008, 10:08:14 AM » |
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Not stored on it's side, but when fished mowing, I tip it forward against a wall to hose off the underside of it. I think the last time I did that, it spent more time than normal in that position. That was the night my dog got out and I had to chase him through the neighborhood for a couple hours...
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Randimus Maximus
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« Reply #13 on: June 01, 2008, 10:12:46 AM » |
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maybe you need to run higher octane fuel in it? what's the owners manual recommend? I only run premium in my power equipment.
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JohnnyDucati
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« Reply #14 on: June 01, 2008, 10:14:24 AM » |
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Not stored on it's side, but when fished mowing, I tip it forward against a wall to hose off the underside of it. I think the last time I did that, it spent more time than normal in that position. That was the night my dog got out and I had to chase him through the neighborhood for a couple hours...
Yup. It's the tipping. Mine did that (leaked oil through the muffler) when I would tip it up to hose off the crud underneath. I gave that up after about the 3rd time I mowed the lawn. Now, I just live with the crusty stuff underneath. And no more oil through the muffler . . . |
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