View Full Version : 8.1L Engine noise(s)

05-23-2014, 11:47 AM
At the beginning of last boating season, I replaced the serpentine belt after hearing it "whining".

Can you hear it?

http://s521.photobucket.com/user/strmchzr/media/018a65ee20fc3c5281c7578069d5cdaa5fb232ae88.mp4.htm l

When new belt didn't improve the "whine", my mechanic buddy suggested spinning the alternator pulley by hand to check bearing. Sure enough, the alternator pulley bearing was a "rough" spin, so what's the best fix?
1.) have alternator rebuilt?
2.) replace w/ new alternator
- same size alternator
- larger capacity alternator (if so, what size)

Can you hear the "secondary hissing" in the video?

http://s521.photobucket.com/user/strmchzr/media/018129bdbc7c50607a408792284fb10ba4d7595171.mp4.htm l

What could the hissing be?

05-23-2014, 12:04 PM
I have nothing to add, but I love the sound of that motor. I could listen to that all day!