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Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3616
Experience:  US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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90 hp 2008 mercury marine engine will not start. Just cranks.

Customer Question

90 hp 2008 mercury marine engine will not start. Just cranks. Battery good. Removed cover and used starter fluid and it almost started.
Submitted: 1 year ago.
Category: Boat
Expert:  Charles replied 1 year ago.
Hello, this is Charles, thank you for requesting me today.What is the serial number of your engine?Is there a primer bulb in the fuel line?Has the engine been sitting for a bit?
Customer: replied 1 year ago.
Where would I find the serial number.NoIt's been 2 weeks since it last ran.
Expert:  Charles replied 1 year ago.
On the right side clamp bracket.
Customer: replied 1 year ago.
Customer: replied 1 year ago.
It's a 4 stroke efi engine.
Expert:  Charles replied 1 year ago.
Look on the bracket that is mounted to the engine. On the right sie there is a sticker. The serial number is ***** there.What about the primer bulb?
Customer: replied 1 year ago.
I don't see a primer bulb.Will try and find the serial number.
Customer: replied 1 year ago.
found it.1B494373Jun 2007
90 ELPT 4S
Expert:  Charles replied 1 year ago.
Thanks, ***** ***** the fuel tank for water. Then remove one of the spark plugs and inspect the tip. Let me know how it looks. How full is the oil?
Customer: replied 1 year ago.
Probably out of my league with EFI. Not sure how to get to the spark plugs.Going to contact a boat mechanic.Thanks for your help.
Expert:  Charles replied 1 year ago.
Spark plugs are on the rear of the engine under the coils. I can guide you through this entire engine.

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