1972 triumph 65hp

[Firsttime545]

Hello all,

I have a 1972 triumph. It was a challenge to get it statted but i got it. But it is leaking gas out of the intake manifold. Im guessing it is a bad or missing gasket. Is there anything to know befoee i open it up and check? Nothing im going to screw up by opening the box and taking a look? Anyway to know which gasket it is before i start? Anything else i should be looking for besides the gasket?

Thanks!

 

[Scott Danforth]

how long was the motor sitting?

you probably need a new impeller as well.

 

[racerone]

It should not be leaking any gas.-------There are no mysteries in removing the cover of the airbox.------Remove it and squeeze primer bulb.------You may see fuel leaking out of one of the carburetors.------You must make sure all 3 carburetors are clean and working properly.

 

[Firsttime545]

Lord knows how long it was sitting. I bought from a guy who bought for a project that never really got off the ground.

 

[Firsttime545]

If it is leaking fuel our of a carb (I'm terrified of getting into those) any chance a can of sea foam would do the trick or am i better off ordering the rebuild kit and going at it?

 

[GA_Boater]

Welcome aboard and welcome to your first outboard carb rebuild.

If Seafoam fixed leaky carbs, we wouldn't be here. :smile;

There are harder things to work on. Order a kit for each carb or you get to do rebuilds just as you begin having fun with you new boat. Just take your time, don't use brute force, follow instructions and ask more questions anytime. Getting the right manual comes with high recommendations.

We're here because there are no mechanics in a can, they don't fit well.

 

[racerone]

If you are terrified of one of these elegantly simple carburetors then I don't know.------There is no magic involved with them.----Take the first one apart , if you have a problem then the other 2 are your tutorial.-------Don't forget to look at the high speed jet ( orifice plug ) that is in the very bottom of the float bowl.----When you are done you will say " that was easy " in my opinion.

 

[Scott Danforth]

If it is leaking fuel our of a carb (I'm terrified of getting into those) any chance a can of sea foam would do the trick or am i better off ordering the rebuild kit and going at it?

there is no mechanic in a can. nothing you pour out of a can can rebuild a carb.

Seafoam is simply naptha and a few other snake oil ingredients.

 

[Firsttime545]

If you are terrified of one of these elegantly simple carburetors then I don't know.------There is no magic involved with them.----Take the first one apart , if you have a problem then the other 2 are your tutorial.-------Don't forget to look at the high speed jet ( orifice plug ) that is in the very bottom of the float bowl.----When you are done you will say " that was easy " in my opinion.

Yeah. I'm just not very mechanically experienced. First boat and trying to learn come stuff on it. I've had a friend who knows a bit more about this stuff (engines, not boats) tell me if its the carb to just take it to a mechanic, which would cost more than what I paid for the boat itself, so I'm going to try and tackle it myself. Its just a situation where the less deep I can get in the better, more than likely.

 

[racerone]

??----On a 1972 model outboard you may have to do some of the work yourself.----In many areas shops do not work on older equipment !----They get complaints on a $200 invoice on a $200 motor.-----They rather work on $50,000 boats where the owner says " thank you " on a $1000 invoice.-----The carburetors on a 1972 motor like yours are critical !----If a carburetor is plugged / restricted the one cylinder may not get enuff fuel and NOT ENUFF OIL that is mixed with the gasoline.------Make sure those simple carburetors are clean before you launch the boat.-----Make sure you have a new impeller before launching.-----Make sure you have clean oil ( Type-C for electric shift ) in the lower unit before launching.

 

[Firsttime545]

So I got the case off and here is what I've found out. The gasket is shot. Needs to be replaced. When I pump the primer bulb there is fuel coming out of the little divet pictured below. I think that is normal, tell me if its not. Seems like that is supposed to be what is happening. Maybe the bad gasket is causing this to leak, as the fuel was leaking whether or not I had the throttle cranked up. When I crank up the throttle a few tablespoons of fuel come out of the lower carb. I'm guessing that is where my real problem is. Obviously the gasket needs to be replaced either way, but unless the large about of gas coming out of the bottom carb is normal I will go ahead and order a few carb rebuild kits as well. Thanks for all the help guys.

 

[Firsttime545]

Also, guessing its not a good idea to try and run it on muffs until I get a new impeller in?

 

[Tim Frank]

If I am reading that picture correctly you have removed the air silencer cover.
That (and the gasket) have no contribution to the gas leak itself. The gas is leaking from another cause....likely a stick float needle....which needs to be fixed.