hi everyone. name is steve maman.
i have a 2009 street bob fxdb with 3000 miles,1584cc.
i noticed upon pulling out my oil dipstick today after riding that it released lots of pressure from inside the crankcase.

what could cause this ? also someone had told me last week that my motorcycle was blowing a little bit of puffs of blue smoke....

anyone have any ideas ?

 

Get a leak down test done. It will tell you if the problem is internal.

 

Did you buy it new? Were break-in procedures followed to the letter?

 

Possible that the crankcase is overfilled.

 

Technically, the crankcase is designed to operate 'dry sump' ... the oil pump has a scavenging side that evacuates the crankcase ....

The 'oil bag' on the Dynas is situated below the transmission case ....

It would seem perhaps the scavenging side of the pump is flowing at a higher rate than the feed side of the oil pump ... would be an anomolous situation unless there is an impediment to flow ... maybe an issue with the relief spring ...? (There's an aftermarket spring with greater tension that increases the bleed off to a higher level of oil pressure.)

If it is a significant amount of pressure building in the oil sump, you should have it investigated ...

... just 'spit balling' here ... as KingofCubes indicates, if the pistons/rings are allowing pressure to escape into the crankcase, it might be pushing oil and gases into the return feed and causing the pressurization of the oil bag ....