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  #1  
Old 08-06-2002, 10:52 PM
greenflag greenflag is offline
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Location: Burleson, Texas
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Smoke from briggs

I have an 8.5hp Briggs that will let out a good bit of white/blue smoke when started.

It only does this on occasion. For example today I started it & loaded it on the trailer, no smoke, when I started it at my first account (about 6 blocks away) it put out a big puff of smoke & then cleared up.

I had thought about water in the fuel but, I am using the same gas in my Kolher, without smoke.

The only change I have made is I started using synthetic oil.

Any ideas????
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  #2  
Old 08-07-2002, 01:44 AM
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Robert Doubrava Robert Doubrava is offline
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I've got a 7hp B&S that smokes all the time. It starts on the first pull everytime. It smokes white heavily, then clears up a little, then smokes the whole time, because oil leaks past the piston, because the cylinder bore is worn out. Either it's the cylinder, or the rings, I think. Good luck!
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  #3  
Old 08-07-2002, 04:58 AM
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Richard Martin Richard Martin is offline
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Greenflag wrote:

The only change I have made is I started using synthetic oil.

It is not unusual for a small engine to release a small amount of smoke at startup. If it bothers you just switch back to conventional oil.
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Old 08-07-2002, 09:16 AM
sdwally sdwally is offline
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It can be oil that leaks by the piston rings, if the rings are worn. Most likely with the description given, it is that the valve guides are worn and seals(if equipped). Oil will travel via the valve stems and set in the ports. The oil in the exhaust port will slowly burn off once engine is started causing the smoke that you see.
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  #5  
Old 09-24-2002, 04:21 PM
Arnold Arnold is offline
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I have a Yardman mulching mower that has done the same thing sense it was new But it never burns enuff to notice on the dipstick so I don't worry about it.
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  #6  
Old 10-02-2002, 05:48 AM
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Bill Kapaun Bill Kapaun is offline
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A puff of bluish-whitish smoke on start up usually indicates some oil has leaked past the valve guides while the engine sat for some period of time.
I would surmise the reaon you got the smoke on the 2nd start is that the synthetic takes more heat to burn then you generated just loading it on the trailer.
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