80 ci evo help

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Jul 11, 2010 | 07:47 AM

jacko1488

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80 ci evo help

i have a 80ci evo. i have oil boiling up out of lifter blocks.
what are some of the reasons this could happen.
i have low compression in front cylinder i was going to deal with it this winter. could this cause the other?

Jul 11, 2010 | 08:15 AM

Dr.Hess

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I don't know exacly what "boiling up out of the lifter blocks" means. A lot of oil? Some little bubbles? Anyway, an oil leak there could be the lifter block gaskets. How low of compression? Excessive blowby from a blown piston could be pressurizing the bottom end. Either way, sounds like the top end is coming off, and new lifter block gaskets when that happens.

Jul 11, 2010 | 08:21 AM

jacko1488

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yea a lot of oil, 10 miles covered the whole right side of bike.
the compression deal, the bike runs grate thats why i cant see all this going on with it running so well.
what the heck...off with her heads!
thanks

Jul 11, 2010 | 03:38 PM

Jim Kraft

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Are you sure it is not coming from the aircleaner?

Jul 11, 2010 | 05:03 PM

Dan89FLSTC

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Last edited by Dan89FLSTC; Jul 11, 2010 at 05:06 PM. Reason: Double post

Jul 11, 2010 | 05:05 PM

Dan89FLSTC

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What year?
What model?
Mileage?
Please explain exactly what boiling out of the lifter blocks means.
Exactly where on the lifter block?

Jul 12, 2010 | 07:53 AM

jacko1488

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its a 90 ultra, 48,000 miles. at 50 the oil is pushing up and out of the lifter blocks. a lot of oil, you could see it running. soaked the whole right side of bike. and i did check to make sure it wasnt coming from air filter.