I have changed my air-filter to a ReVi aiintake. When I removed the old I found oil in the air intake hose. (The little 1ft part that hooks to the engine intake.) It has oil in it. Like a puddle in the bottom.. So I wiped it out and I tried to crank it, it would't crank, just kept turing over for 15min. So i added the oil back in there (the intake hose) and it cranked right up. Is this oil suppose to be in there?