98 115 (E115SLECM) one bank of plugs rusting?

c6mcfall

Petty Officer 3rd Class
Joined
Jun 19, 2013
Messages
90
Motor is running fine, no sign of issues other that when I pulled the cowling to get the model # off the plugs (just getting ready for planned tune up) I noticed one bank the outside of the plugs are very rusty.. other side is NO rust? Ran it last weekend, temp fine.. runs great..

Can't be normal...
 

Bosunsmate

Admiral
Joined
Apr 7, 2012
Messages
6,129
If it was a big water leak the plugs would ground out and short them firing, might be a small water jacket leak or very old plugs
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Start it up and look for a very small water leak on that side.
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,589
Check the louver and baffle in cowling as I have see the baffle cracked and leak water on the head.....
 

c6mcfall

Petty Officer 3rd Class
Joined
Jun 19, 2013
Messages
90
Thanks for the replies. I'll see if I can get home before dark and check the cowling 1st, then will start it to see if there are any leaks.. The plugs are maybe 1 year old.. I got to thinking and the thermostat is RIGHT above those plugs.. so wondering if it's seeping out of there.. I just bought new thermostats, waiting on the springs and O-rings to arrive as I was planning on replacing anyway since the're the originals..
 
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