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NOHIGH SPEED RPM MERC 50 HP OUTBOARD. TRIED TO CHANGE PROPS…

NOHIGH SPEED RPM...

NOHIGH SPEED RPM MERC 50 HP OUTBOARD

Mechanic's Assistant: Sometimes boat issues seem like they'll be really complicated, but end up being easy to fix. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so the Marine Mechanic can help you best.

TRIED TO CHANGE PROPS AND PITCHES BUT NO HIGH SPEED RPM OR SPEED ON WATER

Mechanic's Assistant: Is there anything else the Marine Mechanic should be aware of?

IS ON A 20 FOOT PONTOON REPLACED A 40 HP EVINRUDE WITH THIS EVINRUDE WAS FASTERPLUGS LOOK SO SO BOTTOM 2 ARE CLEANER THEN TOP 2 TRIED TO ADJUST IDLE AIR SCREW NO CHANGE

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Customer reply replied 2 months ago
83 merc outboard
Answered in 14 hours by:
6/20/2018
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 4,921
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
Verified

Hello, my name is***** will assist you.'

Do you have the serial number of the engine?

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Customer reply replied 2 months ago
not sure of. Last num.
Customer reply replied 2 months ago
Think it's a '83tried 3 different props

Has this engine been sitting for some time?

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Customer reply replied 2 months ago
took carbs apart and cleaned them well start a and idles good only getting 1/2 rpms

calling now

Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 4,921
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
Verified
Charles and 87 other Boat Specialists are ready to help you
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Customer reply replied 2 months ago
This is 50 go merc from indiana have 40 to 50 volts on red cdi same on blue and green jumping from was jumping from 70 to over 200 volts not positive .cause d.mm. not fast enough. Green to coils is 50 to 180 volts and bottom 2 cylinders don't look like they're even firing.

Getting only 50V on the blue tells you that it is the low speed coil of the stator that has an issue. You need 150V going to the coils for them to build up the voltage in the secondary winding to jump the gap.

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Customer reply replied 2 months ago
is stator bad is it 1 piece
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Use that part number ans shop around a bit. If going aftermarket, CDI is a good brand and they stand behind their products.

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