Ultima Competition Series, Owner'S Manual

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Oil blowing out of Cylinder Head Breather Vents:
Common causes:
1. Oil tank is over filled.
2. Oil Tank vent lines and return lines are crossed.
3. Oil filter lines are crossed or plugged.
4. Filter has a check valve and lines are crossed (this will sometimes cause the filter to burst).
Typically this problem occurs when either the engine is not returning oil or the crankcase vent is not open to the oil tank. The most common
cause is when Softail
® style tanks are used and get over filled. Do not fill these tanks up to the bottom of the filler. Most tanks have oil lines
internally that bring the vent and return to the top side so it will be in airspace and not immersed in oil which is very important to be correct.
Some tanks have the return side routed to the far side of the tank to improve oil circulation. These tanks must have the return line on the
proper hose barb or when they are hooked up as a vent they can be immersed in oil when on the kickstand which can also cause the problem.
Also be careful of oil filter housings. If you have over filled your oil tank and have this problem you must drain the engine’s crankcase before
refilling. Ultima
® Cases have a drain plug located at the bottom of the engine and you can drain the case if needed. When refilling the oil tank
only put in about 2.5-3 quarts before starting the engine and add additional oil cautiously. Unfortunately it is hard to say how much oil your
tank will hold without this happening again so if you experience this be precise on the amount you add to your tank on the refill during oil
changes.
We have seen some aftermarket housings that were not drilled from the factory causing the return side to be completely blocked. We have also
seen directional filters, which will only work with oil flowing in the proper direction. Be sure that your filter and housing are routed properly
and passages are not blocked.
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