Help Please- Overheat/Impeller

[vexilareye]

First mistake, I let someone borrow my boat. He took it out for a couple hours and realized at the end of the time period that it was not spitting out any water. He said he only had the boat idling, (just enough to pull cranks) but it did run for 2 hrs this way. Did he ruin the motor? I havnt had a chance to take a look at the impeller or run the boat since this time. Is there any symptoms I should look for? This is a 2001 Merc 125. I am not someone who claims to be a mechanic so I apologize if this is a stupid question. Thank you for any help given.

[delcecchi]

Maybe the hole was just blocked?

[broken_line]

1 symptom may be it doesnt turn over anymore

2 have the compression checked should be within 5 psi of each other

3 it will start rough, run kinda weak and wont idle.

4 on that new of a motor there should be a over heat warning that will annoy the heck out of you if its going off for 2 hours, if whomever didnt adress what that beep was they would be buying me a new motor ASAP.

another thing you could do is pull the plugs. if they are white colored it may have over heated if there brown or black your good to go.

[Ufatz]

If he TRULY only ran it at low idle it is possible there was no or little discharge (pee hole stream) from the engine. Hard to imagine it would run for two hours if water pump not functioning properly.

I suspect you do not have a problem.

[boatfixer]

I would tend to agree.

Check for obstructions in the tell tale and try running it on the hose first just to check for flow, then take it to the lake and back it in and fire it up.

[marine_man]

When was the last time you replaced the impeller? If it hasn't been replaced for a while, plus you had some sort of obstruction it's possible there wouldn't have been any stream. If it's been more than 3 years have the impeller replaced anyway.

marine_man

[vexilareye]

Thank you all for your responses. Helped calm some nerves. I put the muffs on yesterday and started it up and there was a stream coming out so I am hoping everything is okay. I plan on changing the impeller just to be safe. Thanks again for the help.