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Jason
Jason, Marine Mechanic
Category: Boat
Satisfied Customers: 14305
Experience:  Degree in Marine Technology. Gas and diesel marine mechanic.
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I have a 20hp 4 stroke that has a knock only at full trottle

Customer Question

i have a 20hp 4 stroke that has a knock only at full trottle when you back off of the trottle just a little bit it quits. everything elso about the engine is just fine love it what is wrong
Submitted: 11 months ago.
Category: Boat
Expert:  Jason replied 11 months ago.

Hi John, my name is ***** ***** I will be helping you today.

It could be something as simple as bad gas or a little water in it. Have you tried running it off of a tank of brand new fuel?

Expert:  Jason replied 11 months ago.

Hi John. It looks like you read my reply and logged off. Did you try to send a response back as I did not receive one.

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