kz550 smokes

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kz550 smokes

16 Jul 2013 15:12
#596773
hey guys

just finishing up my build and now that I have it running I am noticing a good amount of smoke from the exhaust. The bike didnt seem to smoke when I bought it, but I only saw it run for a few minutes.

The only engine modifications were a different muffler. I have a video of it running if I can get it to post here.

where should I start? is there a way to determine if its just a fuel/air mixture. or if its something bigger like valve seals or piston rings?

1980 kz550a

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Re: kz550 smokes

16 Jul 2013 15:16
#596774
Towards the end of the video you can see it smoking after I rev it up

1980 kz550a

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Re: kz550 smokes

16 Jul 2013 17:14
#596792
You may want to perform a leak down test. That will help you determine if the smoke is coming from the valve area (could be valve seals) or the piston rings. Take a look near the bottom of the page in the link below. It gives a leak down test description. Ed

kzrider.com/forum/13-bike-related/570322...hame?start=40#572221
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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Re: kz550 smokes

16 Jul 2013 23:44
#596865
Is that 2 stroke Gas? Oil mixed?
Looks more like a possible ring problem than anything. Oil control rings, if bad, won't show on a compression or leak down test unfortunately. But I highly recommend both, a compression and leak down test. Find out the condition of the engine as much as you can before tearing into it.
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

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