Fuel/oil Leak Need Help Asap Please!!!!!

[cparker072]

I have a 70 hp 1986 evinrude motors runs good and strong but after i put it on the trailer it starts leaking oil/gas does this mean i have a bad seal or need to replace the anti siphon valve?

 

[R.Johnson]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

That engine has float type carbs'. If it's in the tilt position on the trailer,some leakage is normal. Just disconnect the fuel hose when trailering.

 

[cparker072]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

no this bad boy leaks i didnt disconnect the fuel line and the engine was all the way down and it leaked out about 6 gallons

 

[R.Johnson]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

In this case, you will have to clean, and install carb kits'.

 

[mikesea]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

not to over simplify,check every fuel line,thats an enormous amout of leak.if you have a portable tank ,disconnect when not in use,if you have a built in tank,its always a good idea to have a water seperator,you can put a shut off valve in the line at filter,where exactly do you see it leaking from,is it out of the prop,or up high under the cown,under the cowl would leave me to think its a leak up top in powerhead area,it is possible your floats are passing,perhaps your tank is not venting well and pressure relieves through the carbs ,or elsewhere,another possibility is the fuel pump diaphram is leaking,but usually yu have performance trouble with that,the simple fix is a valve

 

[cparker072]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

how does one go about doing that

 

[cparker072]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

not to over simplify,check every fuel line,thats an enormous amout of leak.if you have a portable tank ,disconnect when not in use,if you have a built in tank,its always a good idea to have a water seperator,you can put a shut off valve in the line at filter,where exactly do you see it leaking from,is it out of the prop,or up high under the cown,under the cowl would leave me to think its a leak up top in powerhead area,it is possible your floats are passing,perhaps your tank is not venting well and pressure relieves through the carbs ,or elsewhere,another possibility is the fuel pump diaphram is leaking,but usually yu have performance trouble with that,the simple fix is a valve

its draining down to the prop but coming from below the carberator yeah when i popped the top on the gas tank it really sucked air i checked the lines but i wouldnt think that is the problem because there is no performance issues but i dont know much about marine engines

 

[cparker072]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

i have a metal tank on the one side and a plastic on the other and the plastic one vents fine i have no leak at all on that motor should i try a better venting tank

 

[mikesea]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

thats what im thinking,if your tank sucks air that means its not venting and likely pressurizing with temp,the pressure on the floats is causing it to pass,first ,you can try leaving cap loose,that should vent it,are we talking built in tanks or portable,if built in,change the vent,if portable,you need a new cap

 

[mikesea]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

thats what im thinking,if your tank sucks air that means its not venting and likely pressurizing with temp,the pressure on the floats is causing it to pass,first ,you can try leaving cap loose,that should vent it,are we talking built in tanks or portable,if built in,change the vent,if portable,you need a new cap,i the carbs continue to leak ,you need to adjust the floats,when upside down,the float needs to be just above level

 

[cparker072]

Re: Fuel/oil Leak Need Help Asap Please!!!!!

how do i adjust the floats will i have to take the carberatur apart or is it something i can do by just poking around