Don_ Posted November 26, 2012 Share Posted November 26, 2012 I went out for a fish yesterday, boat was running fine most the day. Then on the way back to the boat ramp the motor decided to sh*t itself and wouldn't push out any power. It's a 2006 30hp 2st Mercury, and i had an issue with it a few weeks back but after a service the mechanic told me it was as good as new. My question is, would the above issue be a result of putting too much oil in the mix? I've been told (and stupidly listened) that it doesn't matter if you put more than the given ratio of petrol to oil (50:1 in this case), and because the motor has only gone through about 1 full tank since the service (where the mechanic pulled the carby completely apart and gave it a good clean), would running new petrol with the right ratio solve it, or should i get it cleaned again? I would attempt to clean it myself but i have no mechanic knowledge at all! Thanks in advance! Link to comment Share on other sites More sharing options...
a boat Posted November 26, 2012 Share Posted November 26, 2012 I went out for a fish yesterday, boat was running fine most the day. Then on the way back to the boat ramp the motor decided to sh*t itself and wouldn't push out any power. It's a 2006 30hp 2st Mercury, and i had an issue with it a few weeks back but after a service the mechanic told me it was as good as new. My question is, would the above issue be a result of putting too much oil in the mix? I've been told (and stupidly listened) that it doesn't matter if you put more than the given ratio of petrol to oil (50:1 in this case), and because the motor has only gone through about 1 full tank since the service (where the mechanic pulled the carby completely apart and gave it a good clean), would running new petrol with the right ratio solve it, or should i get it cleaned again? I would attempt to clean it myself but i have no mechanic knowledge at all! Thanks in advance! Hi, do not listen to that person that told you a richer mixtrue than 50:1 is a good idea-in fact more oil will cause more problems than less oil and I bet one of your plugs is carboned up so remove them and give them a good clean or better yet just replace them with the right ones. Then fill with good 50:1 fuel/oil mix (I hope you are using good oil too) and go for a hard run to get rid of that excessive oil. Cheers, Huey. Link to comment Share on other sites More sharing options...
Don_ Posted November 26, 2012 Author Share Posted November 26, 2012 Hi, do not listen to that person that told you a richer mixtrue than 50:1 is a good idea-in fact more oil will cause more problems than less oil and I bet one of your plugs is carboned up so remove them and give them a good clean or better yet just replace them with the right ones. Then fill with good 50:1 fuel/oil mix (I hope you are using good oil too) and go for a hard run to get rid of that excessive oil. Cheers, Huey. Thanks for the quick reply mate! I definitely won't be listening to that person anymore. I use Castrol oil, is that decent oil? Will i notice the motor running better after i change or clean the plugs (assuming thats the problem)? Thanks again mate. Link to comment Share on other sites More sharing options...
a boat Posted November 26, 2012 Share Posted November 26, 2012 Thanks for the quick reply mate! I definitely won't be listening to that person anymore. I use Castrol oil, is that decent oil? Will i notice the motor running better after i change or clean the plugs (assuming thats the problem)? Thanks again mate. Hi, I would not use that if my engine, only Merc premium plus or XD-50 is what I would personally use. Yes if a plug is fouled due to the amount of oil and you refit the correct plugs (what are in it at present?) then the engine should run good but only one way to know for sure and that is to try it. Cheers, Huey. Link to comment Share on other sites More sharing options...
Don_ Posted November 26, 2012 Author Share Posted November 26, 2012 Hi, I would not use that if my engine, only Merc premium plus or XD-50 is what I would personally use. Yes if a plug is fouled due to the amount of oil and you refit the correct plugs (what are in it at present?) then the engine should run good but only one way to know for sure and that is to try it. Cheers, Huey. I wouldn't have a clue what plugs are in at the moment, ill check as soon as i get home though. I just bought myself some Merc premium plus aswel. What plugs would you recommend for my motor? I appreciate all the help mate. Link to comment Share on other sites More sharing options...
a boat Posted November 26, 2012 Share Posted November 26, 2012 I wouldn't have a clue what plugs are in at the moment, ill check as soon as i get home though. I just bought myself some Merc premium plus aswel. What plugs would you recommend for my motor? I appreciate all the help mate. Hi, I would recommend the right plugs which are B7HS-10. Cheers, Huey. Link to comment Share on other sites More sharing options...
Don_ Posted November 26, 2012 Author Share Posted November 26, 2012 Just one last thing, the motor was still pushing out a bit of power, a very slow walking pace at most. Should I still be doing the steps you said mate? Link to comment Share on other sites More sharing options...
dylan the villain Posted November 26, 2012 Share Posted November 26, 2012 Hi, I would recommend the right plugs which are B7HS-10. Cheers, Huey. sorry to hijack thread, but would these be the right plugs for an merc 2002 25hp 2stroke? mine are due for a change i think. cheers. Link to comment Share on other sites More sharing options...
Nolongeramember Posted November 26, 2012 Share Posted November 26, 2012 I went out for a fish yesterday, boat was running fine most the day. Then on the way back to the boat ramp the motor decided to sh*t itself and wouldn't push out any power. It's a 2006 30hp 2st Mercury, and i had an issue with it a few weeks back but after a service the mechanic told me it was as good as new. My question is, would the above issue be a result of putting too much oil in the mix? I've been told (and stupidly listened) that it doesn't matter if you put more than the given ratio of petrol to oil (50:1 in this case), and because the motor has only gone through about 1 full tank since the service (where the mechanic pulled the carby completely apart and gave it a good clean), would running new petrol with the right ratio solve it, or should i get it cleaned again? I would attempt to clean it myself but i have no mechanic knowledge at all! Thanks in advance! How much extra oil was in the mix? Just a question, was the reason you got it serviced and the carby cleaned because it was doing the same thing its doing now. No power? Link to comment Share on other sites More sharing options...
Don_ Posted November 26, 2012 Author Share Posted November 26, 2012 How much extra oil was in the mix? Just a question, was the reason you got it serviced and the carby cleaned because it was doing the same thing its doing now. No power? It wasn't a lot more, but it would have been more than the 50:1 that's recommended. When it was playing up the first time, as soon as i would start it up it would go straight up to max revs. Link to comment Share on other sites More sharing options...
austral Posted November 27, 2012 Share Posted November 27, 2012 (edited) have you checked your propellar? when you say that it travels ok at a walking pace but when you try to go faster, does it just rev louder and not go any quicker?? if so it could be your propellar bush has failed..and you need a new one.. ps. if it is your prop,the motor should rev fine out of the water. but when it is in the water the reristance on the prop causes it to fail.. Edited November 27, 2012 by austral Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted November 27, 2012 Share Posted November 27, 2012 this sounds silly to new boat owners but when u added the oil to the fuel did u shake the tank to mix the oil and fuel together? Link to comment Share on other sites More sharing options...
Don_ Posted November 27, 2012 Author Share Posted November 27, 2012 I don't think it's the prop because it doesn't rev fine in or out of the water. Gazza I gave it a good shake when I filled the tank up. Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted November 28, 2012 Share Posted November 28, 2012 I don't think it's the prop because it doesn't rev fine in or out of the water. Gazza I gave it a good shake when I filled the tank up. don try removing your fuel hose from the engine and the tank take both end plugs off and tip the fuel from inside the hose into a clear cup and inspect it a very long time ago i had the same problem as u and it worked out to be water in the fuel i bought Link to comment Share on other sites More sharing options...
Don_ Posted November 28, 2012 Author Share Posted November 28, 2012 don try removing your fuel hose from the engine and the tank take both end plugs off and tip the fuel from inside the hose into a clear cup and inspect it a very long time ago i had the same problem as u and it worked out to be water in the fuel i bought Will do mate. How do you know if fuel is in the hose? ( probably a stupid question) and what does it mean if there is water in there? Is it as simple as putting new fuel in? I actually emptied the fuel and put new fuel in the day it started playing up hoping that would fix it. After doing all these things, if the problem gets fixed how long will it take for it to run fine again? Thanks, Don Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted November 28, 2012 Share Posted November 28, 2012 Will do mate. How do you know if fuel is in the hose? ( probably a stupid question) and what does it mean if there is water in there? Is it as simple as putting new fuel in? I actually emptied the fuel and put new fuel in the day it started playing up hoping that would fix it. After doing all these things, if the problem gets fixed how long will it take for it to run fine again? Thanks, Don when u pour the fuel from the hose into a clear cup u will see the two separated liquids if theres water in there if this is the problem u just need to drain the carbs empty the fuel tank than you should be good to go Link to comment Share on other sites More sharing options...
Don_ Posted November 28, 2012 Author Share Posted November 28, 2012 Thanks gazza ill give it a go mate. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now