Fluid leak from prop shaft

mtrice

Cadet
Joined
Apr 12, 2010
Messages
7
96 40hp Mercury. I noticed fluid (Im assuming lower unit fluid) slowly leaking from prop shaft today. Just had boat out yesterday, had problem with high idle randomly, but ran fine when got home on the muffs. Noticed the fluid in the driveway today. Any ideas? Where do I begin? Replaced water pump approx 3 months ago, and changed lower unit fluid about 2 weeks ago. Thanks,
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,642
Re: Fluid leak from prop shaft

Smell the oil to confirm it is gear oil. if it stinks, it is gear oil. If it is leaking gear oil, it is likely the propseal is bad. Did you find any fishing line around the propshaft?
 
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