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  #11  
Old 12-28-2008
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SD

I kinda liked my answer better. It was nicer and at least fixed his problem!
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  #12  
Old 12-28-2008
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JR...

Start your motor, and get your other half to reproduce the symptoms, however you do it.
Go round the motor listening carefully until you get an idea of where it's coming from.
Screeching is normally a belt drive issue, but it should not happen to the alternator belt if the batteries are well charged.
Check the belt tightness.
Which motor is it? Do you have a picture or a reference?
Is there enough lube in the gearbox? Sometimes a 'box can make a funny noise going on and off load.
Generally, if it is not a clattering, the motor should be fairly sound.
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  #13  
Old 12-28-2008
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Quote:
Originally Posted by craigtoo View Post
SD

I kinda liked my answer better. It was nicer and at least fixed his problem!
Well, it doesn't fix the problem but it does fix the complaint
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  #14  
Old 12-28-2008
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Quote:
Originally Posted by Rockter View Post
JR...

Start your motor, and get your other half to reproduce the symptoms, however you do it.
Go round the motor listening carefully until you get an idea of where it's coming from.
Screeching is normally a belt drive issue, but it should not happen to the alternator belt if the batteries are well charged.
Check the belt tightness.
Which motor is it? Do you have a picture or a reference?
Is there enough lube in the gearbox? Sometimes a 'box can make a funny noise going on and off load.
Generally, if it is not a clattering, the motor should be fairly sound.
That's pretty much what I was thinking. I don't know of anything else that would make a screeching sound. I would definitely check to motor mounts. Also look around the pullyes on the front of the engine, is there anything in close proximity? Does it show wear that might be cause by rubbing against a pulley?

And as others have said, details of the engine and driveline would help as well.
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  #15  
Old 12-28-2008
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On the basis that diagnosis involves eliminating the simplest possible causes first, then I would agree with those who advocate checking drive belts. If the alternator belt is the cause, then you should be able to reproduce the noise by starting with the engine at a fast tickover with no batteries connected, then switching in both batteries. The charging load on the alternator should result in a screech from the slipping belt.....

Good hunting

Stuart
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Last edited by Leither; 12-28-2008 at 08:45 PM. Reason: typo
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Old 12-28-2008
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Man, JR...., I have to go with Sailingdog & Cardiac and say, give some information, for crying out loud! It's not like everyone is right there in the boat with you.
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  #17  
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Quote:
Originally Posted by Rockter View Post
JR...

Start your motor, and get your other half to reproduce the symptoms, however you do it....
Sometimes a 'box can make a funny noise going on and off load.

We're still talking about a boat problem, right?
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  #18  
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Quote:
Originally Posted by bljones View Post
We're still talking about a boat problem, right?
I'm really glad someone else picked this up. I cracked up reading it (no offense, Rockter) assuming it related to some form of mating ritual. Though, I must admit, " 'box" is not a term I am familiar with in this context.......

Stuart
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Leith (rhymes with teeth) is the port of the City of Edinburgh in Scotland. A Leither is someone who comes from that area.

I must go down to the sea again, to the lonely sea and the sky - I left my shoes and socks there, I wonder if they're dry?
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  #19  
Old 12-28-2008
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Quote:
Originally Posted by Leither View Post
I'm really glad someone else picked this up. I cracked up reading it (no offense, Rockter) assuming it related to some form of mating ritual. Though, I must admit, " 'box" is not a term I am familiar with in this context.......

Stuart
OMFG. I just picked up on that one.


Anyway, as for the switching the batteries in and out. You really should be careful. Most alternators I know of are likely to blow the regulator if you disconnect the batteries while the engine is running.
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  #20  
Old 12-28-2008
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Quote:
Originally Posted by bljones View Post
We're still talking about a boat problem, right?
Bahaha! Point Mr. Jones.

Aweome. !

Where the heck is JR?
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