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25 merc, starts hard then idles gh but Boggs when you try to

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25 merc, starts hard then...
25 merc, starts hard then idles high but Boggs when you try to accelerate.sounds like there is a popping noise also when you try to accelerate.1980s model.
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Customer: I'
JA: Is there anything else the Marine Mechanic should be aware of?
Customer: The moter had a mouse nest with stuff packed all around the inside of the engine cover before the problem happened.
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Submitted: 1 year ago.Category: Boat
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Answered in 9 minutes by:
6/11/2016
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3,994
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
Verified

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

Has the engine been sitting unused?

How long have you had this issue with the hard starting?

Have you done any work to the fuel system?

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Customer reply replied 1 year ago
Sat over winter but started right away in spring. Ran fine for 5 uses. 30 min each. 3 week period. Was going through water at very slow speed went to accelerate and engine popped and died. Will start but idles high and wont accelerate. Makes popping sound like the timing is off. No work done on fuel system
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Can you pull the spark plugs and look at the tips of them.

Could you also do a compression test on the engine?

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Customer reply replied 1 year ago
Not right now but can later. I can't do a compression check
Customer reply replied 1 year ago
Pulling the plugs and changing the gas was going to be my next step.
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

For the compression test, you can rent a tester at an auto parts store.

When you do get to the engine, also check the fuel for water. It is really easy to buy water at a gas station.

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Customer reply replied 1 year ago
Thanks. Is there a possibility of a timing issue or is there no such issues with these 2 stroke motors.
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Only real way that it could be a timing issue is it the trigger is not moving, or the key sheared off under the flywheel. Has the engine recently had a fast shut down, like if you had hit bottom, and the engine just stopped?

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Customer reply replied 1 year ago
Don't think so thanks
Customer reply replied 1 year ago
What's the trigger?
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Do you have the serial number of the engine, I can get you a diagram of it.

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Customer reply replied 1 year ago
I don't right now thanks
Marine Mechanic: Charles, Marine Mechanic replied 1 year ago

Ok, I am looking for a diagram. Is the engine from 1980 or the 1980's?

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