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I have a Mercury 200hp Outboard Optimax. Its got one ,

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I have a Mercury 200hp...
I have a Mercury 200hp Outboard Optimax. Its got one long, continuous pulsating beep & it will not crank. What's wrong? PLease help.
Submitted: 1 year ago.Category: Boat
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Answered in 14 minutes by:
6/12/2016
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3,994
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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Hello, my name is***** will assist you.

Will the engine spin over and not start, or will it not spin at all?

Would you please post the serial number of the engine?

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Customer reply replied 1 year ago
qto19765 it spins over great just wont crank. it has a loud contuis pulsating alarm as soon as you turn the key
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

The serial number will start with a 0 or a 1, followed by a letter, then 6 more numbers. Or do you know the year of the engine?

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Customer reply replied 1 year ago
1999
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Ok thanks. first thing to look at is the kill switch in the boat. Make sure that it is fully in the run position.

Then I will need to know the CCA size on the battery.

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Customer reply replied 1 year ago
do i have a kill switch and if so where would it be? i dont see anything around the ignition key like all my boats in the past. i have two new batteries 845cca. two weeks old
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

What control box do you have?

Can you post a pic of the dash and control here?

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Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Your not trying to start in gear are you?

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Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

when did the engine last run?

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Customer reply replied 1 year ago
No, it won't spin over in gear. i just got the boat back from a mechanic of sorts. i had to have the 80 gallon tank cut out of the floor and replaced. i just this morning got a new starter installed. he was either busy or slow so to answer your question it hasnt been crunk and running in 12 months. im not sure if this boat had a kill switch. but if it did i cant see where it would go. however i do notice something missing from my boat keys since i got it back but im not sure what
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Do you hear the fuel pumps run when you turn the key on?

Can you get into the console and locate the black/yellow wires and make sure that they are connected properly and not to a black?

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Customer reply replied 1 year ago
i cant hear anything with the alarm screaming the second you touch the key
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

If you have a helper, remove the engine hood, then have them turn the key from off to ON, you should hear 2 pumps turn on.

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Customer reply replied 1 year ago
the wires come out of the ignition and go directly into a cluster headed under the floor of the boat
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Yes, in that cluster is a black and yellow wire, this is the kill circuit.

Can you test the pumps, and while your on the engine, check all the fuses.

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Customer reply replied 1 year ago
both pumps seem to be coming on. one on each side of the engine
Customer reply replied 1 year ago
i have one cluster of fuses at the engine. all 20 amp. all 4 fuses are good
Customer reply replied 1 year ago
these wires arent plug type wires they are hard wired
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

The wires you mention, is that the key switch wires?

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Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

ok, Can you test it for spark?

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Customer reply replied 1 year ago
all six are firing
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Is this alarm beeping or solid in tone?

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Customer reply replied 1 year ago
its constant but pulsating in tone
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Ok, Locate the oil tank on the engine, unplug it and see if the alarm stops. If not, remove the fuel filter canister filter, and pour it into a glass jar. See if you have any water in it.

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Customer reply replied 1 year ago
all this on the fuel side is brand new. filter tank and hoses. the alarm on the oil tank when it goes off isnt constant. i found that out the hard way. but i will go check it tho
Customer reply replied 1 year ago
ok i unplug the oil tank and the constant beep went away. now i hear 4 intermittent beeps
Customer reply replied 1 year ago
gas filter seems to be clear of water and debris
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Ok, Can you test the battery power going to the engine?

Sorry about the delay, I lost power.

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Customer reply replied 1 year ago
8.2 while trying to crank. 12.5
Customer reply replied 1 year ago
12.5 before you spin it over
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Ok, these engines need at least 9.5 to the ECU to even start. Try a set of jumper cables from the battery to the engine. See it if will then start. If it does, you either have dirty connections or bad battery cables.

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Customer reply replied 1 year ago
i dont have jumper cables that long. would it be safe to jump it off from my truck
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Yes, you can use the truck battery. Place the red from the cables on the red of the starter solenoid, the black to a good engine ground.

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Customer reply replied 1 year ago
now its spinning over at 9.7. alarm still going off. 4 pulsating beeps and 1 long constant beep afterwards
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Did it start?

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Customer reply replied 1 year ago
didnt even try
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Put some water to it and give it a go.

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Customer reply replied 1 year ago
i did that it sounds like it occasionally wants to fire but the alarm isnt stopping
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Look at the temp senders on the cylinder heads and the air compressor. Make sure that all of them have all 3 wires plugged in.

With the key on, engine off, with the alarm going off, move the throttle let me know if the alarm stops.

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Customer reply replied 1 year ago
help me with temp senders. im not sure what they are. however i checked every wire and harness i saw. i checked the alarm its coming on and off 4 times and nothing else. the throttle didnt stop the beeping
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago
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Customer reply replied 1 year ago
this all seems to be plugged in
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

There is also one on the air compressor. Looks just like the other 2.

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Customer reply replied 1 year ago
its plugged tight as well
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Check to make sure that the TPS, air temp, the coil drivers and the coils. are all plugged in as well.

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Customer reply replied 1 year ago
ok it all seems to be plugged in secure
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Alright, is the oil tank still unplugged?

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Customer reply replied 1 year ago
no
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Alarm still sounds?

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Customer reply replied 1 year ago
but not constant. 4 beeps then it goes off
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Is that a 4 light warning light in the dash? Does it work?

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Customer reply replied 1 year ago
my light doesnt work
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

That would really help here. Do you think it may only be the bulbs?

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Customer reply replied 1 year ago
im not sure. dont know how to check the bulbs. im calling it quits for today
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

They are just regular small light bulbs. You can either look at them or use a multimeter set or resistance to check them.

Talk to you later.

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Charles
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3,994
3,994 Satisfied Customers
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.

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