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I have a 1996 mecury 60 hp 3 cylinder will only start when…

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i have a 1996 mecury...
i have a 1996 mecury 60 hp 3 cylinder will only start when i flip the man over board switch up and down while turning the engine over it will always start but wont always idle
Submitted: 3 years ago.Category: Boat
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Answered in 4 minutes by:
6/17/2015
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 4,530
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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Hello, my name is***** you for allowing me to assist you today.
Would you please post the serial number of the engine?
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Customer reply replied 3 years ago
0G186087
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
Thanks,
When you are starting the engine cold, how are you doing it?
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Customer reply replied 3 years ago
i set in the seat left hand on the key right hand is flipping the man overboard up and down untill it fires up
i do push the choke for a second or 2
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
Ok,
Try this. Pump the primer bulb until firm, turn the key to ON, press in and hold for a count of three, then while still pressing in turn the key to start. The engine should start pretty easily if everything inside the carb is clean . You may need to advance the warm up lever on the throttle to help it warm up.
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Customer reply replied 3 years ago
it will run my problem is the fact that i have to flip the kill switch off and on to get it to have fire to the sparkplugs its not a fuel problem its a electrical problem of some sort
Customer reply replied 3 years ago
it will run fine for undetermined amout of time might be 20 minutes might be 3 hours might be 30 seconds but it always loses spark
Customer reply replied 3 years ago
cdi is good voltage regulator is good
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
Have you tried to bypass the kill switch?
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Customer reply replied 3 years ago
yes i have bypassed the kill switch i actually disconnected it right out of the switch box still nothing so i put a jumper wire on the black yellow wire right out of the switch box and had my son turn the engine over still nothing so why he was turning it over i tapped the jumper wire intermittenly against the ground bolt and it starts just like i was flipping the kill switch up and down
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
Is there a history on the engine and the control box? Have you done anything recently?
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Customer reply replied 3 years ago
nope it ran fine b4 it has compression on all cylinders if you take sparkplugs out and turn it over it all plugs spark put them back in still wont start with out flipping switch off and on
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
I it this way when the engine is warm as well?
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Customer reply replied 3 years ago
yes it doesnt matter sometimes it does it when engine is warm sometimes when its cold sometimes not at all
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
Intermittent problems are the hardest to locate.
Do you have a good quality digital multimeter?
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Customer reply replied 3 years ago
yes a decent one
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
Ok,
On the engine, locate the blue and the blue white leads going to the switchbox. Unplug them. Test the AC voltage from one blue to ground while cranking the engine. Then test the other. Let me know what you find.
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Customer reply replied 3 years ago
i have one it just doesnt make sense if i take plugs out and the have spark unless stator is weak
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
That is what the testing is for. We will find the weak part.
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Customer reply replied 3 years ago
i found blue one it had 83 volts did not find blue with white it had a red one it had 34 volts
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
That was disconnected?
Try removing the spark plugs and run that test again.
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Customer reply replied 3 years ago
Ok I will do it first thing in the morning it's pooring here and I am wore out been up since 5 this morning
Customer reply replied 3 years ago
Yes I disconnected both those wires when checking voltages
Marine Mechanic: Charles, Marine Mechanic replied 3 years ago
Sounds good. I have surgery on my knee tomorrow around noon. I will try and log on in the eve if I am not too loopy.
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