A Boats forum. BoatBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » BoatBanter.com forum » rec.boats » Electronics
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Smoking Alternator - HELP!!



 
 
Thread Tools Display Modes
  #1  
Old October 6th 04, 06:00 PM
?
external usenet poster
 
Posts: n/a
Default Smoking Alternator - HELP!!

I have a mercruiser I/O 4 cyl. 3.0 and was in the process of
winterizing it on the trailer. I always disconnect the battery
terminals while its on the slip between uses because it drains rather
quickly if I don't (it's my first season with this boat and I suspect
that the radio/equalizer that the prior owner installed may be
grounding out and draining the battery). Anyway, I had it on the
trailer and connected the battery, positive first, then negative, then
went forward and switched on the key to start it and warm the engine
for the oil change when I heard a "click" from the engine compartment.
I looked back and there was brownish/white smoke flooding the engine
compartment, which seemed to be eminating from the alternator, but I
didn't waste any time and immediately disconnected the battery. The
terminals were warm to the touch. It took several minutes for all the
smoke to clear, but when it did, I didn't see any signs of damage to
external wires. Can someone please help me with this?!? I don't want
to ruin the alternator or the battery by hooking it back up if I'm
missing something, and I certainly don't want a battery blowing up on
me! My only thought is that maybe it was caused by the boat being on
the trailer, and there was a grounding issue, but I've winterized it
at the end of last season with no problems and it worked all of this
season with no issues. The only thing different from last fall is that
I didn't have the muffs on the lower unit yet when I connected the
battery. Thanks!!!

-Smokey
Ads
  #2  
Old October 6th 04, 08:13 PM
Wayne.B
external usenet poster
 
Posts: n/a
Default

On 6 Oct 2004 10:00:25 -0700, (?) wrote:
I have a mercruiser I/O 4 cyl. 3.0 and was in the process of
winterizing it on the trailer. I always disconnect the battery
terminals while its on the slip between uses because it drains rather
quickly if I don't (it's my first season with this boat and I suspect
that the radio/equalizer that the prior owner installed may be
grounding out and draining the battery). Anyway, I had it on the
trailer and connected the battery, positive first, then negative, then
went forward and switched on the key to start it and warm the engine
for the oil change when I heard a "click" from the engine compartment.
I looked back and there was brownish/white smoke flooding the engine
compartment, which seemed to be eminating from the alternator, but I
didn't waste any time and immediately disconnected the battery. The
terminals were warm to the touch. It took several minutes for all the
smoke to clear, but when it did, I didn't see any signs of damage to
external wires. Can someone please help me with this?!? I don't want
to ruin the alternator or the battery by hooking it back up if I'm
missing something, and I certainly don't want a battery blowing up on
me! My only thought is that maybe it was caused by the boat being on
the trailer, and there was a grounding issue, but I've winterized it
at the end of last season with no problems and it worked all of this
season with no issues. The only thing different from last fall is that
I didn't have the muffs on the lower unit yet when I connected the
battery. Thanks!!!

=================================

Sounds like either things got hooked up backwards (positive and
negative reversed), or something was shorting out. Hard to say from
long distance.

Going forward, I'd recommend installing a battery switch and finding
the leakage path that's draining the battery.

  #3  
Old October 6th 04, 08:36 PM
Jim Hollenback
external usenet poster
 
Posts: n/a
Default

Wayne.B ) wrote:

: Going forward

[retching sound]

In the future, please.

--
Jim Hollenback

my opinion.
  #4  
Old October 6th 04, 09:00 PM
MikeG
external usenet poster
 
Posts: n/a
Default

In article ,
says...
I have a mercruiser I/O 4 cyl. 3.0 and was in the process of
winterizing it on the trailer. I always disconnect the battery
terminals while its on the slip between uses because it drains rather
quickly if I don't (it's my first season with this boat and I suspect
that the radio/equalizer that the prior owner installed may be
grounding out and draining the battery). Anyway, I had it on the
trailer and connected the battery, positive first, then negative, then
went forward and switched on the key to start it and warm the engine
for the oil change when I heard a "click" from the engine compartment.
I looked back and there was brownish/white smoke flooding the engine
compartment, which seemed to be eminating from the alternator, but I
didn't waste any time and immediately disconnected the battery. The
terminals were warm to the touch. It took several minutes for all the
smoke to clear, but when it did, I didn't see any signs of damage to
external wires. Can someone please help me with this?!? I don't want
to ruin the alternator or the battery by hooking it back up if I'm
missing something, and I certainly don't want a battery blowing up on
me! My only thought is that maybe it was caused by the boat being on
the trailer, and there was a grounding issue, but I've winterized it
at the end of last season with no problems and it worked all of this
season with no issues. The only thing different from last fall is that
I didn't have the muffs on the lower unit yet when I connected the
battery. Thanks!!!

-Smokey



If it were me and I had winterized the year before, pulled the boat out
of mothballs in the spring, ran it all summer, ran it up on a trailer,
then IF the ONLY other thing I did before turning the key was unhooking
the battery then hooking it back up I'd strongly suspect I screwed
something up while connecting and disconnecting.


--
MikeG
Heirloom Woods
www.heirloom-woods.net

  #5  
Old October 7th 04, 01:53 AM
Wayne.B
external usenet poster
 
Posts: n/a
Default

On 6 Oct 2004 13:36:41 -0600, (Jim Hollenback)
wrote:
: Going forward

[retching sound]

In the future, please.


======================

Uhhh, it's a metaphor...

....figuratively speaking.

  #6  
Old October 7th 04, 09:08 AM
BruceM
external usenet poster
 
Posts: n/a
Default

Where's all the auto electricians?
I'd suggest that the alternator is toast. I'd also reckon that the regulator
(inbuilt or external?) was sticky & feeding power "backwards" & in effect
turning the thing into an electric motor? I bet you if you didn't have belts
on it (or wasn't direct drive?), it would have been spinning.
Either way I'd be getting it serviced. (or replaced now?)
BruceM


"MikeG" wrote in message
ews.com...
In article ,
says...
I have a mercruiser I/O 4 cyl. 3.0 and was in the process of
winterizing it on the trailer. I always disconnect the battery
terminals while its on the slip between uses because it drains rather
quickly if I don't (it's my first season with this boat and I suspect
that the radio/equalizer that the prior owner installed may be
grounding out and draining the battery). Anyway, I had it on the
trailer and connected the battery, positive first, then negative, then
went forward and switched on the key to start it and warm the engine
for the oil change when I heard a "click" from the engine compartment.
I looked back and there was brownish/white smoke flooding the engine
compartment, which seemed to be eminating from the alternator, but I
didn't waste any time and immediately disconnected the battery. The
terminals were warm to the touch. It took several minutes for all the
smoke to clear, but when it did, I didn't see any signs of damage to
external wires. Can someone please help me with this?!? I don't want
to ruin the alternator or the battery by hooking it back up if I'm
missing something, and I certainly don't want a battery blowing up on
me! My only thought is that maybe it was caused by the boat being on
the trailer, and there was a grounding issue, but I've winterized it
at the end of last season with no problems and it worked all of this
season with no issues. The only thing different from last fall is that
I didn't have the muffs on the lower unit yet when I connected the
battery. Thanks!!!

-Smokey



If it were me and I had winterized the year before, pulled the boat out
of mothballs in the spring, ran it all summer, ran it up on a trailer,
then IF the ONLY other thing I did before turning the key was unhooking
the battery then hooking it back up I'd strongly suspect I screwed
something up while connecting and disconnecting.


--
MikeG
Heirloom Woods
www.heirloom-woods.net



  #7  
Old October 7th 04, 04:12 PM
?
external usenet poster
 
Posts: n/a
Default

I'm confident that the leads were hooked up properly, as they will
only reach to the appropriate terminals, so that isn't the issue. My
only thought is that because I connected the positive terminal first,
it may have started grounding out somewhere, and subsequently
connecting the negative terminal wouldn't have corrected the issue
because it would lie "further down the line" as well as the main
circuit breaker, which didn't trip. So my first inclination is that it
grounded or shorted out through the alternator, frying it in the
process. Thanks for the input everyone, I'll just have to hook 'er up
again tonight and see if it's toast.......
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Smoking Diesel Capt. Dan General 13 September 7th 04 05:22 PM
Mike B, Your smoking some good stuf Wyatt Earp Power Boat Racing 0 December 4th 03 04:18 AM


All times are GMT +1. The time now is 12:56 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2004-2014 BoatBanter.com.
The comments are property of their posters.
new