All I Hear Is A CLICK

[jfholijr]

I have a 1975 Mercury 650 65 horse 3 cylinder serial #4264549 outboard (enough info???), when I turn the key to start the motor all I hear is a single click. I know that my battery and starter are good. Could this simply be a bad rectifier? Thanks <br /><br />wellwhoopidydoo

 

[Trent]

Re: All I Hear Is A CLICK

Nope...If the battery is fully charged. It would be a bad starter solinoid.<br /><br /> web page <br /><br />Order p/n 18-5815 at your local NAPA autoparts store.

 

[rodbolt]

Re: All I Hear Is A CLICK

could be even something as simple as a bad connection at the battery or as bad a a locked up motor. some simple tests will show you the way.<br /> all the solinoid is is a high current flow switch. its not vodoo or anything. use a multimeter to test the voltage drop acrossed it while its engaged. should be less than a volt or so. all the click means is that the magnetic coil in the solinoid is capeable of pulling the disc.<br /> good luck and do some testin before some switchin

 

[Hookem Dano]

Re: All I Hear Is A CLICK

I have a 69-650 4 cyl thunderbolt, it was doing the same thing. I changed the Solenoid and cleaned all the wires really good. Use a Marine Solenoid it has a internal ground, where automotive does not. Mine took right off and been good ever since. You said your starter is working, how do you know if all your getting is a click?

 

[jfholijr]

Re: All I Hear Is A CLICK

Simple took starter off, took it to marine repair man and he tested it.

 

[Hookem Dano]

Re: All I Hear Is A CLICK

Right On ! I would just clean all wires first,that might be all it is. Good luck

 

[jfholijr]

Re: All I Hear Is A CLICK

Ok will try that and thanks

 

[Clams Canino]

Re: All I Hear Is A CLICK

Originally posted by WhoohooIt'saBoat:<br />Simple took starter off, took it to marine repair man and he tested it.

**Please** don't take this wrong. But if you had to take a 12V starter motor *anywhere* to get tested, you're prolly in over your head regarding the basic 12V DC electrical theory at play here.<br /><br />Be carefull is all. <br /><br />-W

 

[jfholijr]

Re: All I Hear Is A CLICK

Thanks for the insult Clams but untill last night I did not have jumper cables nor a battery nor a battery charger/starter of which to use.

 

[Clams Canino]

Re: All I Hear Is A CLICK

I'm sorry. I *didn't* mean it as an insult. <br /><br />I was going off the premise of your opening post that you had a good battery in hand. In that case it seemed easier to scrounge up a couple wires than to remove the starter and take it for a drive. The opening part about the rectifier gave me a little pause as well.<br /><br />What I was trying to say that unless you have some experience with a generic 12V system (like a car or a motorcycle), you really don't wanna go poking around in the electrics without studying the manual carefully.<br /><br />-W

 

[jfholijr]

Re: All I Hear Is A CLICK

I am familiar with cars and 12v systems, but their are some important differences with marine motors. Now I know that the rectifier protects the stator and the switchbox from sudden voltage/amperage changes like crossing the battery terminals, unhooking a terminal while the engine is running or shutting off the engine while above idel speed. After using an ohm meter, aka multimeter, I'm confident that the stator has fallen prey to someones missuse of this motor. But, I am not sure if the rectifier would also prevent the solenoid and starter from functioning or just eleminate the internal and or external juice from causing spark to the plugs.

 

[Clams Canino]

Re: All I Hear Is A CLICK

Actually the rectifiers primary purpose is to rectify the raw AC out of the stator into DC - to charge your battery. But yes, it can (by giving it's own life) protect the stator from strage and unlikely overloads. <br /><br />Unless the stator measures wide open it's prolly OK, I think the nominal value is 2-4 Ohm acroos it's two leads (disconnected of course) so it would look like a dead short to most ohm-meters.<br /><br />While the automotve charging system combines the alternator, rectifier, and regulator inside the generic "alternator". You merc has a seperate alternator (stator), rectifier, and no regulator included. <br /><br />Your starting system however, is straight automotive. Bat, solenoid, momentary switch, DC motor.<br /><br />-W

 

[jfholijr]

Re: All I Hear Is A CLICK

I'm sorry I messed up and said stator had fallen to missuse, I meant to say the rectifier had fallen to missuse and I did the ohm meter tests and it shows it as being bad.

 

[Clams Canino]

Re: All I Hear Is A CLICK

Originally posted by WhoohooIt'saBoat:<br /> But, I am not sure if the rectifier would also prevent the solenoid and starter from functioning or just eleminate the internal and or external juice from causing spark to the plugs.

Neither. You could throw away the stator and the rectifier, and the motor would start and run just fine, same as if the alternator belt broke on a car.... Untill the battery went dead because you threw away the charging system. But you'd be able to run normally for a good hour or two anyway, just like most cars .<br /><br />-W

 

[jfholijr]

Re: All I Hear Is A CLICK

So even if the rectifier is blown the solenoid and starter should still turn the motor over?

 

[jfholijr]

Re: All I Hear Is A CLICK

Sorry for the last post Clams you were posting as I was and you answered my question with your post.

 

[andrewkafp]

Re: All I Hear Is A CLICK

Yes.

 

[jfholijr]

Re: All I Hear Is A CLICK

Well my next step is to make sure all my connections are clean and good then if the solenoid doesn't work then replace it, right?

 

[andrewkafp]

Re: All I Hear Is A CLICK

Think Clams has retired for the night...<br />But it's only 4:00 pm here.. <br /><br />Yes.<br /><br />Make sure you have good clean tight and greased connections. My 50 Merc was doing this until I added an isolator to the terminals,which is hand tightened real tight. Previously, there was just a wing nut on the positive side that was hard to tighten. loose or bad battery connections can also damage your rectifier.

 

[Clams Canino]

Re: All I Hear Is A CLICK

One thing about this board.... if your asleep at the switch everybody knows it. <br /><br />-W