INTERMITTANT SMOKING


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twinegar
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INTERMITTANT SMOKING

Post by twinegar »

After driving my latest addition for a week I want to run a minor issue by the forum and see what responses I get. I have a pretty good idea what it is.
About half the time when I first start the bike of a morning I am getting smoke from the right exhaust for a few seconds. I took the bike out after dark a couple times so I could see if there was any smoke showing in the lights of the cars behind me but none is apparent even if I step into it and run it up to around 7k.

What say you!
http://www.spookytoms.com/SpookyTom-MTRCCLSTF.html

"66CL160, 68CL125A, 68CL450, 69CL125A, 69CB750, 71CB450, 71CB500, 71CB750, 72CB350F, 72CB750, 74CB750, 75CL360, 75CB550, 75CB750, 76CB750, 79CB750, 79CBX, 79CBX, 80CBX, 82CB750, 84VF700S 05HDSPORTSTER1200ROADSTER"

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SteveG
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Post by SteveG »

Ride it like you stole it and check the oil every now and then :D

Steve

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alimey4u2
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Post by alimey4u2 »

I agree with Steve but first guess would be valve seals...
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steve murdoch icoa #5322
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Post by steve murdoch icoa #5322 »

Oil is cheap. A Norton owner told me that in response to the exact same question about my '81.
I have minor smoking issues on the right side that clear when the seals warm up. A year and 4000 miles later i just remember to start the bike outside of the garage.
Obviously, i am keeping an eye on the performance and oil consumption.

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twinegar
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Post by twinegar »

Thanks for the responses.
I was thinking it might be the seals also. When I pulled the head off my #2 last year all the seals were hard and one had broken up and I imagine I would see a similar situation here. The #3 also gave me an excellent running "X" to compare my #1 to and I am now convinced it has a valve that isn't seating completely even though it runs silky smooth so I guess my next step is to get a leak down tester and then have a go at #2 for the third time and then #1 while I enjoy the heck out of driving #3. As always I will add pictures to my website to document the progress.
Thanks for the good advice.
http://www.spookytoms.com/SpookyTom-MTRCCLSTF.html

"66CL160, 68CL125A, 68CL450, 69CL125A, 69CB750, 71CB450, 71CB500, 71CB750, 72CB350F, 72CB750, 74CB750, 75CL360, 75CB550, 75CB750, 76CB750, 79CB750, 79CBX, 79CBX, 80CBX, 82CB750, 84VF700S 05HDSPORTSTER1200ROADSTER"

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