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?

 

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.

 

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

 

Are you sure it is not coming from the aircleaner?

 

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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?

 

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.

 

Did you check to see if the oil pump is scavenging? What is the level in the tank?

 

oil level is a little low in tank but it did leak alot of oil

 

are the lifter blocks loose?