One-Click Nightmare

Joined
Jun 1, 2017
Messages
14
Hi Guys,

So I’m having a recurring issue that has plagued me for the past 2 seasons. When I turn the key to start the engine I get a single click. The click is either coming from the 50A main reset, or what I think is the slave solenoid located right next to it. Last year I replaced the slave solenoid assuming that was the culprit – it wasn’t. Still had the same exact one-click issue. The next thing I did was replace the 50A circuit breaker. This actually seemed to have fixed the problem. However, a month or 2 after I installed it the problem came back. The weird thing is that sometimes it will actually turn the engine over, but 95% of the time I get the single click.

When I went to start the boat for the first time this year it turned over and the engine fired up after 2 turns of the key. I let it come up to temperature and **** her down. About 30 minutes later I tried turning the key and the single click has returned. Since I ordered two 50A main reset breakers last year I went ahead and reinstalled the second. By George, that seemed to fix it as it turned right over. Again, I let the engine come up to temperature and then turned it off. When I returned 30 minutes later to start it up, the click returned. Grrrr….

One thing to note – if I touch both prongs on the slave solenoid (located directly next to the 50A main) it kicks the starter over 100% of the time. In my mind, this eliminates the starter solenoid and starter as the culprit. I also assume it can’t be the 50A breaker since that falls behind the slave solenoid, which wouldn’t let the starter turn over when jumping the slave solenoid, I think?

Another anomaly is my battery is only showing 11 volts on the gauge as well as on a portable voltage meter. When the engine is running over 1000 RPM it increases to around 13V, then comes back down to 11ish when idling. I know this is low and could be contributing to the problem. However, if there wasn’t enough cranking power in the battery to turn the starter when I turn the key, why would it provide plenty of power when I jump the slave solenoid? Does this weed-out the battery as well as the main positive and negative cables as the problem? Furthermore, I’ve hooked the battery up to my battery charger on the “50A engine start” setting to try see if it will turn over when above 12A – no luck.

I also can’t locate any corrosion anywhere. Also, if there was corrosion I don’t think it would turn over when jumping the solenoid.

If there’s any connection, last year the engine was hydro locked, which was professionally repaired by Sea Ray – I still have no idea how that ever happened. Not sure if this is a clue or a totally unrelated problem.

Running a Merc 4.3LX/V6 engine. All fuses appear to be good. No crimps in the wiring that I can see.

I'm wondering if the cheap slave solenoid I installed last year is the culprit. Maybe I should gave gone with the more expensive OEM Quicksilver option.

Anybody have any suggestions? This is driving me crazy and the last thing I want to do is take it to the shop so they can take a month fixing it and charge me a ton of money. As the name suggests, I’m no mechanic so any replies should be typed as though being read by a 5th grader! Any suggestions are highly appreciated. Thanks guys!!!!!!
 

GA_Boater

Honorary Moderator Emeritus
Joined
May 24, 2011
Messages
49,038
Pull the battery out and have it load tested. 11 volts is a dead battery.
 
Joined
Jun 1, 2017
Messages
14
GA_Boater - I agree. I actually took the battery back to AutoZone last year (with the same low-voltage symptoms) and was told it was showing good on their battery tester. None the less, if the battery is too dead to crank the started by turning the key, why would it fire right up when I connect both posts on the slave solenoid? If it was a dead battery problem, wouldn't it not crank the started when jumped?

I'm not saying you are wrong, just to clarify. It could be the case of multiple issues, and a not so good battery could be one of the issues. Still though, why would it have enough power to crank when jumping the slave solenoid?

I almost feel like the replacement slave solenoid is a dud, even though it works every once in a while.
 

GA_Boater

Honorary Moderator Emeritus
Joined
May 24, 2011
Messages
49,038
It may be an intermittent slave, but 11 volts is dead. Jumping the slave may allow just enough current to twist the starter by eliminating wiring losses between the battery to the slave/starter.

If the battery was showing 12+ volts, I would blame the slave too. Have you tried to jump a second battery to the boat battery?
 
Joined
Jun 1, 2017
Messages
14
What you said about avoiding wire loss when jumping the solenoid makes a lot of sense.

I have not tried jumping the battery to another. In other words, I can pull my truck up next to the boat, connect the jumper cables from my truck battery (while it's running), and the other ends to the pos and neg on the main boat battery. If the boat starts that tells me it's a battery issue. Is that correct? Sorry, I'm not great with mechanical projects, especially when electrical is involved!
 

GA_Boater

Honorary Moderator Emeritus
Joined
May 24, 2011
Messages
49,038
What you said about avoiding wire loss when jumping the solenoid makes a lot of sense.

I have not tried jumping the battery to another. In other words, I can pull my truck up next to the boat, connect the jumper cables from my truck battery (while it's running), and the other ends to the pos and neg on the main boat battery. If the boat starts that tells me it's a battery issue. Is that correct? Sorry, I'm not great with mechanical projects, especially when electrical is involved!

Yep. Just like jumping a car. You can even try taking off the ground connection off the battery post and hook up the jumper cables to the positive post and the ground wire - In other words, take the boat battery out of the circuit. If it starts reliably, the boat battery is bad. Load testing should show if the battery is good or bad.

How old is the battery? Although new batteries go bad too.
 
Joined
Jun 1, 2017
Messages
14
The battery is going on it's 3rd boating season, so it's about 2 years old. It's possible I screwed it up when charging it though. I've charged it on all kinds of different settings (2A, 10A, 55A, starting battery, gel). Yes, I'm an idiot! However, I bought the 5-year warranty so... Regardless, I think I will take it in for a load test.

I didn't have time to try jumping the battery last night but will today if the rain holds-off. I think I will also pick up a Quicksilver OEM slave solenoid to replace the $10 generic one that's on there now. Lastly, I will disconnect the main ground at the rear of the engine block to check for corrosion. The only other thing I wish I was competent enough to do is to check each of the cables for loss of power. I have a multi-meter and a volt meter, but I'd be lying if I told you I knew how to use them. I've watched several videos online but you need a decent understanding of how they work to fully understand what they are saying. I get confused with all the setting options and never know which one to turn the dial to.
 

poconojoe

Lieutenant Commander
Joined
Sep 10, 2010
Messages
1,966
Just guessing, but if it were the battery, it may be too weak to handle all the resistance of the complete starting circuit going to and from the helm. But it does start the engine when you take all that wiring out of the circuit. Or perhaps your helm wiring is the culprit. Maybe loose or corroded connections.
​​​​ But, I would bet it's the battery according to your voltage readings.
I guess you only have the one battery for starting. I would suggest getting a second battery with a selector switch for peace of mind. I wouldn't run with only one battery, but that's me.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
You don't have to know how the "meter" works. You do need to understand basic electrical theory so you know what it is you want to test for. The voltage scales are either AC (like your house circuits) and DC (car, boat, battery circuits). Current settings measure the amount of current (amps) a circuit draws. Voltage is measured "across" a circuit (positive and negative points). Current is measured in series with the positive lead. Resistance can be used for non-powered circuit checks. The meter has an internal battery so you would not try to test resistance of a motor for example with power applied to it. Most testing on a boat would be done using the " dc volts" settings (whatever range on your meter 12 volts falls into).
 
Joined
Jun 1, 2017
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Excellent advice, guys! I'm going to run up to Auto Zone this afternoon to have the battery tested. Depending on the outcome, I'll either swap out the battery with one that's good and charged, or will try connecting the positive and negative cables directly to my truck battery using jumper cables (taking the boat battery completely out of the equation. I'll post my results tonight. Fingers crossed!

Thanks again for the help, everyone!
 
Joined
Jun 1, 2017
Messages
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Ok, so I'm an idiot and the battery was shot. So after $100 and 2 trips to auto zone (forgot my wallet) I raced home and hooked up the new battery. Aaaaaaaand wait for it..... CLICK!

Same problem. Wtf? Checked again for corrosion. Disconnected and checked the main ground at the block. Nothing. Not even under the sleeve. I even hooked my battery charger to it, gauge was reading 13v on the dash and still just a single click.

Assuming the click is the slave solenoid, would the click indicate it is doing its job properly or do they make the noise when they're dead?

I hate to spend the time and another $70 on an OEM solenoid just to find out that isn't the problem either.

What's the next logical thing you would do?
 

ajgraz

Lieutenant Commander
Joined
Mar 1, 2010
Messages
1,858
Does your voltage gage still read 11v, even with this new battery? Wondering if your gage is shot...or if you’ve got a short somewhere?

Any chance you’ve got a bad ignition switch?
 
Joined
Jun 1, 2017
Messages
14
No the voltage meter is up above 12 with the new battery.

If the ignition switch was bad would it still be able to pass the circuit to the solenoid that is making the click? If it was dead would I even hear the click? How would I check this?

Does the click mean the solenoid is working?
 
Joined
Jun 1, 2017
Messages
14
I'm getting 12v to the slave solenoid, 12v to the 50A main breaker and 12v to the starter solenoid. That's with the ignition on but not cranking.

Everything else like the blower, trim, bilge, horn and lights work perfectly.
 
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