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2007 25 HP EFI Outboard engine light horn at idle?

cmo

New member
I have a 2007 25hp EFI Merc. Outboard Jet. When the engine is cold, my engine light/horn blows and engine shuts off. Restart and it runs fine.

I've taken it to two different certified Mecury Mechanics and they say nothing is wrong. However, it does this just about every time I first crank it for the day. The rest of the day it's fine.

Any help would be appreciated.

Thanks,

Chris
 
Fixed! After taking my boat to TWO local outboard "Mercury Certified" mechanics with no luck, I fixed the problem myself. The mechanics kept telling me that my water pump impeller was bad and replaced. WRONG! They just assumed and didn't actually diagnose the problem.

After two months of frustration with mechanics saying it was fixed and it wasn't, I decided to look at it myself.

Solution: Clogged Thermostat. I replaced the thermostat with a new one and all is well. As always, if you want something done right, do it yourself.

Thanks,

Chris
 
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