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  Shallow water and other dumb errors

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Author Topic:   Shallow water and other dumb errors
JohnT posted 08-16-2001 11:45 PM ET (US)   Profile for JohnT   Send Email to JohnT  
I thought I'd share so others may learn from my mistake. Went fishing last Sunday morning in my Montauk with a friend from out of town. We decided to drift in near some cover in shallow water. Not catching anything, we decided to move. I tilted the lower unit back into the water and began cruising out of the shallows. Once in deep water, I trimmed down, planed off and BEEEEEEEP - the alarm went off. I glanced down and the temp sensor was pegged. I shut her down (glanced toward the indicator stream and didn't see one - uh-oh!). Waited for the motor to cool down, cranked her up again - no stream for sure - and shut her down again. Called a friend on cell-phone...Back at the dock, ran water through muffs to no avail, then shot water into the exhaust tube in the lower unit. Water came streaming up and out through the exhaust ports - a small amount of gray water at first, then it ran clear. Put the muffs back on and it ran great - indicator stream and everything. Test drove fine - no overheating.

Lesson learned: No more gunkholing around in shallow areas. Mud in the intake can ruin your day.

Oh, yeah, now there's a throbbing at about 3000rpm that I didn't notice before this episode, but it could be totally unrelated (Still idles and runs fast just fine - go figure...). Any suggestions? Anyone else want to admit doing something stupid for our collective edification? :-)

Clark Roberts posted 08-17-2001 07:27 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
John, have no idea what the "throbbing" could be but keep an eye on that temp gage and if it runs higher (even slightly) than previously change the water pump impeller (sand, grit, mud etc can ruin the vane tips quickly). Also a good idea to retorque head and exhaust baffle bolts to factory spec (unless you have a merc with no head bolts) after any overheat as the expansion of overheat can cause gasket leaks and you will get more overheat and water in cyls shortly. Check it out! Clark ... Spruce Creek Navy
JohnT posted 08-20-2001 02:23 PM ET (US)     Profile for JohnT  Send Email to JohnT     
Thanks, Clark! I will have it checked out. The motor isn't running any hotter (not even slightly) that I can tell, and seems to be running just the same now. The "throbbing" seems to have gone away as well (or maybe the river just wasn't calm enough to hear it this weekend). Everything seems fine, but I'll definitely check those head bolts and exhaust baffle bolts.

Thanks again.
John

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