Home › Forum › Ask A Member › 1967 Mercury Merc 60 6hp Sneezing and stalling
- This topic has 23 replies, 7 voices, and was last updated 6 years, 10 months ago by
silvab7232.
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February 27, 2018 at 1:29 am #71673
Use 2 stroke starting fluid, It will speed up if vacuum leaks sucking in to richen & check the mag 4 arcs….
February 27, 2018 at 1:53 am #71674I really appreciate all the feedback and tips I’ve received from you guys! Definitely will be getting back to work on it and will use your helpful tips! 😀
February 28, 2018 at 2:48 am #71704Alright so I’ve cleaned the carb and adjusted the screws, I’ve also made sure all the fuel lines were sealed and secure. I’m still somewhat confused on the halves of the engine? Lol sorry but mercs are like a whole new platform to me 😯
February 28, 2018 at 3:29 am #71705And still isn’t running to well, I’m hoping that I won’t have to spend a lot to get it going again. But willing to try the paint thing if that might hold up once I find a leak some where
February 28, 2018 at 4:24 am #71707quote crosbyman:have you tried pump the fuel bulb when it start sneezing … check fuel connector for air leaksany results…..
btw try running it in the dark …look for HV leaks
did you pull the flywheel on this 6hp to inspect everything … sorry to ask and tank vent open and working….
Joining AOMCI has priviledges 🙂
February 28, 2018 at 11:22 am #71710I did forget to mention when I did pump the bulb when it was running and it ran good! Once I stoped, it’s staryed sneezing then it stalled 🙁
February 28, 2018 at 12:00 pm #71711quote Silvab7232:I did forget to mention when I did pump the bulb when it was running and it ran good! Once I stoped, it’s staryed sneezing then it stalled 🙁Well in that case, you have a fuel pump or carburetor issue. I would suggest purchasing a Quicksilver carburetor overhaul kit, that includes a new needle and seat AND a fuel pump diaphragm and gaskets. Just taking it apart and cleaning the carb will probably not do it. It’s easy to mix up the gaskets and diaphragms and that little carb, that can result in lean running issues. Purchasing the correct mercury service manual off of Ebay will be a big help..
February 28, 2018 at 12:04 pm #71712BTW, have you tried setting the fuel tank up on a chair? Trying to run that motor (in a tank) with the fuel tank sitting on the ground is asking to much of the little fuel pump… at low speeds, it can’t pull fuel up that much. I think somebody already brought up this point, just a reminder.
February 28, 2018 at 12:24 pm #71713Yes I’ve tried setting it up About level to the power head, still not not Engough for the little motor. But as I pump the fuel bulb a little bit when it’s running, it runs great. But when I stop pumping, it will start to sneeze like 10 seconds after I stop. As you guys were telling me earlier that it maybe the leaky halves of the motor. Or could it be the fuel pump having a leak? I liked the idea of running it in the dark and using the special light to potentially identify the leak. Hopefully I can find it and get it back up and runnin good
February 28, 2018 at 1:21 pm #71714A leaky crankcase seam would still cause problems, whether you squeeze the primer bulb or not. So it would make no difference. You need to get the carburetor and fuel pump squared away before proceeding further, otherwise your just chasing your tail. I’m thinking you may not even have any leaky seams at all. if the carburetor inlet needle is still original, I can promise you that it needs replacement anyway. As for me, I don’t even try to start a newly acquired outboard without first checking the compression, and if that’s good, then go through the points, condensors and follow up with a carburetor cleaning and rebuild. Lastly, of course, go through the water pump and gear lube. Then you will have a dependable motor that will run for years to come. Here is a picture of a block with the crankcase halve removed, for reference. https://www.ebay.com/i/112836155110?chn=ps
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