Hi all,
Pretty new to the forum and hopefully i have posted this right !! I have a Mercury Optimax 115hp on my rib and it has started to make a funny noise when i am dropping the throttle off. Accelerating etc are all fine but when i drop off there is like a whine or something almost like the sound of a belt slipping or something. I would be very grateful if anyone could offer any advice as to what they think it might be.
Thanks in advance
It does yes i believe but i do not think that is the cause. I do have a short video of it but am struggling to find a way of uploading it. Not very tech savvy
Yes. Just appeared on first trip out last year. Didn't appear to get any worse, just pretty annoying noise. It does sound a bit like that without the air dump.
I had one of these engines before. Very good motor. Fuel efficient and powerful!
I'm pretty sure it has a belt-drive compressor to be able to deliver compressed air into the fuel rail and then mixed fuel and air into the combustion chamber. Anyway, I would check the belt at the top of the engine. There is a cover that pops off. That belt needs to be in great shape. Also check any hoses going from the compressor.
I had one of these engines before. Very good motor. Fuel efficient and powerful!
I'm pretty sure it has a belt-drive compressor to be able to deliver compressed air into the fuel rail and then mixed fuel and air into the combustion chamber. Anyway, I would check the belt at the top of the engine. There is a cover that pops off. That belt needs to be in great shape. Also check any hoses going from the compressor.