Yamaha 4stroke 40hp slight popping noisy

General Boats and Motors
1

I recently bought a 40 hp 4 stroke 2012 model been sitting for a few years might have 30 hours on it it seems to run great on land revs up great idles good cranks up perfect but it has a slight popping noisy coming from the air intake where the screen is I’m worried it might be a valve sticking has anybody ever heard or seen this before al help greatly appreciated

2

run some seafoam through it

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3

Thanks I’ve been told that stuff does wonders I have narrowed it down to a hose that goes onto the side of the throttle body if I pull the hose of and put my finger over it the noise stops lol

Kevin morrow

4

SEND ME THE SERIAL NUMBER
THAT MOTOR MAY STILL BE UNDER WARRANTY

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IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING

5

Thanks Chris people like you makes this such a great site willing to take a few minutes and help people out!!!

Kevin morrow