Pull the dipstick and look at the oil on it. If it's over full, and/or thin and watery and smells like gas, there's your answer. The spit hole is there to vent any gas that gets to the underside of the diaphragm, but it seldom handles all of a bad leak.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!