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  1. R

    warning buzzer

    I have a 1988 80 HP Merc 3 cylinder. It has oil injection that is under the cowling. I went to start the engine for the first time this year and the warning buzzer comes on when the key is turned on, with out starting the engine. I understand this to be a low oil level warning? The oil is...
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    8hp nissian trolling problem

    My dad has 2010 Nissan 8hp that he uses as a kicker. The engine runs fine and idles good. But when you make the slightest throttle movement to speed up the engine seems to surge and rev up. In other words you cant make a small speed adjustment, it rpm seems to jump up. A bit frustrating since...
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    stuck steering

    I have a Whaler with a 1988 80hp merc. While trying to replace the steering system, i have created a monster. I can not get the steering cable out of the tube part of the engine? I was given advice that might be bad to drive the cable end out by soaking in oil and trying to drive it out with a...
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    adding voltage regulator

    I know this topic has been cover a bunch. But i have an 80hp 1988 Merc with the clasic over charging issue. I cant prove it but i think i burned up a depth finder. So can you recomend a voltage regulator that i can add to this? I do electrical work so i figure i can do it with some info and...
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    1979 4.5 hp Merc

    Hi i have a 1979 4.5 hp merc that is leaking fuel and driving me crazy. In the past i have rebuilt the carb. I just replaced the fuel lines. I dont see any leaking from the pump or the lines. I can squzze the primer bulb hard enough to hurt my hand and get no leaks. But when the motor runs...
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    trailer tires

    OK men, its time for new tires on my trailer. What is your opinion on the radials or bias? What brands do you like and dont like? I need 205 74 14 , acording to the tag on the trailer. THanks joe
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    oil injector question

    After finally getting my 1988 80hp Merc running well, i have questions about the injection system. It is inside the motor cover. Im just checking to make sure its working right. How much oil should it use? I know they go 50 to 1 when running at high rpm. But at slow trolling speed do they...
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    flooding

    More trouble. I have been fighting electrical problems on my 88 80hp Merc. While trying to restart it to look at timeing i flooded big time. The fuel bulb dosent get stiff as normal, fuel is just running in to engine. I guess a float must be stuck? Only thing i can think of. Any more...
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    please help me understand timeing

    I need some help with understanding the timeing on my 1988 80hp 3cyl Merc. As on other posts here i have been fighting a long running battle with an on and off electrical problem. I recently replaced stator and trigger. I think the stator was bad and i replaced the trigger becasue some of the...
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    Overcharging

    I have an 1988 Merc 80 hp. It has the classic overcharging problem. I didnt want to fry my marine radio. It was mentioned on here some place before that you can use a zenor diode to solve that problem? It makes sense to me from my elec knowldege years ago. If any of you electrical or outboard...
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    jets

    I was wondering what some of your expert opinions on the pros and cons of rejetting for high elevations. I have an 1988 merc 80hp. The lakes i fish at are usually 5700-4500 feet. I have got away with out rejeting on my old boat but this one is giving me some trouble. I beleieve i have solved a...
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    4.5 hp missing bad

    I need some help from any of you outboard techs please. I have a 1979 Merc 4.5 hp serial number 5397758. It has a bad miss, on the low rpm side. The plug and wire are fine. I have what appears to be the Thunderbolt phase maker cd ignition with points. I have 2 manuels but the dont seem to be...
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    4.5 hp trouble

    I have a 1979 4.5 hp Merc that was sitting for years. I totally cleaned the carb and installed a new impeller. It starts now and pumps water fine but it seem to bog down. After awhile it speeds up and dies. I suspect the fuel pump? Does anybody have any other ideas? Also, does this engine have...
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    mercury electrical problem

    I have a 1988 80 hp 3 cylinder mercury. I have a miss on the lower cylinder that comes and goes. I changed the rectifier becasue i was not getting any charging. The system is now charging but the miss is still there. Also, it seem im getting 16 volts or more out of my system now. That voltage...
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