Boats For Sale:
compression and idle quality |
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TX Foilhead 
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Joined: February-01-2009 Location: Kingsland TX Status: Offline Points: 2076 |
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 Posted: May-06-2014 at 9:26pm |
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That's pretty rough on the alternator, it might end up being bad if you keep that up. Ignition issues suck, I was thinking coil myself except when I had simialr issues I couldn't get it to restart or run with the throttle open up.
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21171 |
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Posted: May-06-2014 at 9:44pm |
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Like TX said, if it wasn't the alternator causing the problem originally, it's probably suspect now! They don't last real long without a good 12v reference.
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Bri892001
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Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Posted: May-07-2014 at 12:11am |
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Do you have access to another battery you can try, like from your truck or something? How old is the one you've got in there? It could have some kind of internal short.
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forvicjr
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Joined: August-24-2012 Location: sc Status: Offline Points: 692 |
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Posted: May-07-2014 at 12:19am |
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Nice... wont be doing that again. I have been wanting to get a 90 /100 amp altenator to replace mine.I have an amp and want to beef the the charging system up some.Any suggestions on an upgrade?
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“Tact is the ability to step on a man's toes without messing up the shine on his shoes.” ― Harry S. Truman
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forvicjr
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Joined: August-24-2012 Location: sc Status: Offline Points: 692 |
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Posted: May-07-2014 at 12:24am |
Yeah once I hit the old battery with the start selection on my charger and realized that the engine smoothed out because of it I yanked the battery out of my wifes car and all troubles dissappeared. As I said before its charging right at 13.50 volts. I would have liked to see closer th 14 volts though. |
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“Tact is the ability to step on a man's toes without messing up the shine on his shoes.” ― Harry S. Truman
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backfoot100
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Joined: January-03-2007 Location: United States Status: Offline Points: 1897 |
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Posted: May-07-2014 at 10:59am |
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13.5 is fine for a charge voltage. I wouldn't worry about that. The battery sounds like it's definitely the problem then.
Sometimes it's a real head scratcher at what the problem turns out to be. |
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When people run down to the lake to see what's making that noise, you've succeeded.
Eddie |
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phatsat67
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Joined: March-13-2006 Location: Indiana Status: Offline Points: 6157 |
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Posted: May-07-2014 at 1:03pm |
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Batteries with dead cells can do all types of weird stuff. Ask me how I know.
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MrMcD
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Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3736 |
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Posted: May-07-2014 at 2:08pm |
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Glad you found the issue, your compression numbers are very good for a used engine. The fluctuating vacuum is a sign of dead cylinders. No spark will certainly kill cylinders. If you go with a new alternator for more Amps make sure it is a Marine Sealed unit. The Marine units are designed to make sure no spark is exposed. This way if you get a fuel leak there is reduced chance of Explosion. I think it is Marine Law also to have the sealed Starter and Alternator in boats.
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Bri892001 wrote: