SMOKING TAILPIPE AT STOP LIGHT

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raicerx
Posts: 8
Joined: Thu Mar 20, 2014 11:51 pm
model: 907 I.E.
year: 1993
Location: USA

SMOKING TAILPIPE AT STOP LIGHT

Post by raicerx »

My 907 randomly blows large amounts of exhaust smoke at stoplights. Doesn't seam to follow any pattern. Just random blow of oil smoke. Not coolant , definitely smells and looks like oil. So what is allowing oil to enter the combustion chamber at stops after both low and high speed runs?
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higgy
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model: 907 I.E.
year: 1992
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Re: SMOKING TAILPIPE AT STOP LIGHT

Post by higgy »

worn guides,worn or missing seals,crankcase breather issues, too much oil improper valve lash

or any combination of all of the above


Could even be as simple as the wrong oil
Last edited by higgy on Mon Sep 25, 2017 10:10 pm, edited 1 time in total.
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Mc tool
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model: 906 Paso
year: 1990
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Re: SMOKING TAILPIPE AT STOP LIGHT

Post by Mc tool »

Or even might be burning oil all the time and you only get to see it at a standstill. Does it use much oil , what do the plugs look like ..... both the same or is one oiled up ( don't mix them up as you remove them ..... )
I wish I was young again............Id be heaps smarter than last time
raicerx
Posts: 8
Joined: Thu Mar 20, 2014 11:51 pm
model: 907 I.E.
year: 1993
Location: USA

Re: SMOKING TAILPIPE AT STOP LIGHT

Post by raicerx »

It blows tons of smoke when I come to a stop, it isn't a constant smoke thing. It reminds me of my high school car '74 camaro that smoked like a military grade smoke grenade at random moments. it turned out to be the trans breather thing. How do I check the oil breather valve?
Mc tool
paso grand pooh-bah
Posts: 1874
Joined: Wed Dec 05, 2007 12:35 am
model: 906 Paso
year: 1990
Location: Newzealand

Re: SMOKING TAILPIPE AT STOP LIGHT

Post by Mc tool »

Don't spose you have had the valve clearances done just before this started ?
I wish I was young again............Id be heaps smarter than last time
raicerx
Posts: 8
Joined: Thu Mar 20, 2014 11:51 pm
model: 907 I.E.
year: 1993
Location: USA

Re: SMOKING TAILPIPE AT STOP LIGHT

Post by raicerx »

No resetting of the valves recently. Had complete valve work done less than 2k miles ago. The bike doesn’t smoke at all except for a random event once every 20 minutes or so at speed and idle. No seaming reason. I’m thinking the breather.
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