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My Mariner 60hp Bigfoot efi 4 stroke is making a clonking…

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My Mariner 60hp Bigfoot efi...
My Mariner 60hp Bigfoot efi 4 stroke is making a clonking noise when running and alarm sounded for a few seconds engine cut out a couple of times but restarted ?
Submitted: 2 years ago.Category: Boat
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Answered in 1 minute by:
1/17/2016
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 4,894
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 today.

Would you please post the serial number of the engine?

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Customer reply replied 2 years ago
Hello , s.nop31934
Customer reply replied 2 years ago
Does that help ?
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago

You seem to be missing a few numbers. There are a total on a 0 then a letter, followed by 6 more numbers.

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Customer reply replied 2 years ago
S.nop319314 60pt4s 2004
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago

Thanks, ***** ***** know why the engine ran out of oil?

Have you checked the oil now to see if there is any metal in it?

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Customer reply replied 2 years ago
I don't think there was a reason I never checked the oil once in 90miles when checked there was no metal or bits in the oil then refilled and it seemed OK for 5 mile then started clonking again
Customer reply replied 2 years ago
It was my mistake of not checking out why it had very little in I don't no was no water or debris . When I first ran the engine it had the wrong size prop so I could imagine it burnt to much oil but I'm not sure .
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago

Lets get a start on the noise. Remove the flywheel cover and slowly turn the flywheel clockwise using the 30mm nut. Line up the arrow on the cam with the embossed arrow on the block. This will be pointing at the 12 O'clock position. Then without moving the flywheel, set the cover back on the engine. The 0 mark should be in the window. If that is good, remove the spark plugs and look at the tips. If you could send me a pic of them, that would help greatly.

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