Mariner 2.5 2 Stroke Flooding Immediatly

dolabriform

dolabriform

Well-Known Member
Joined
12 Sep 2016
Messages
1,917
Location
Kent
freewheeling.world
Hi all

I've got a 2.5hp Mariner 2 Stroke and as soon as I open the fuel tap I see fuel coming out of the front of the carburetor ( air intake? ) which then overflows and starts dripping out of the housing.

Obviously it won't start!

Any thoughts?

Thanks

David
 
If you can turn the engine over you may be able to remove the float bowel on it's own. As others have said almost certainly gunged up float chamber. spray with carb cleaner and clean it all out.
 
You need a long skinny screwdriver to remove the float bowl. The pin holding the float in can be pushed out and the float removed. This allows you to clean out the float needle valve and seat plus the main jet.

You should definitely do this even if you gat it running this time.

For some reason this is an increasingly common problem possibly associated with the addition of etchanol to petrol.
 
I've found it got worse when I tried running the carb dry. I reckon It would never run dry but leave a small enough amount in the bowl that would evaporate more easily than if it was left full. I've just started and run my outboard today and it's been in the garage since December with a full bowl . I open the fuel cock and give it a couple of tugs on the start cord about once a month just to keep it full and I've found this better than trying to leave it dry over the winter. Same fuel as was in it at the end of the season and today it started on the 3rd pull
 
RichardS said:
Has spraying the WD40 solved the sticking float/valve and stopped the fuel flow?

I don't really see how it could have unless actually starting the engine has created enough flow to clear debris from the valve/free the float.

Richard
Click to expand...

It started it and ran for a short while, so I know compression etc is ok. But stopped and the problem is still there. It's going to need stripping and sorting properly, and now I know what I am looking for. So thanks all for pointing me in the right direction :)
 
dolabriform said:
It started it and ran for a short while, so I know compression etc is ok. But stopped and the problem is still there. It's going to need stripping and sorting properly, and now I know what I am looking for. So thanks all for pointing me in the right direction :)
Click to expand...
Stripping is a bit drastic, just take the float bowl off and clean it out. Spraying wd40 all over it would do nothing other than attract dust and dirt.
 
Remove flat bowl and check the float isn't full of fuel (no longer a float!)

Otherwise, clean, check and refit. It'll probably be fine, as it was when last used.
 
No Regrets said:
Remove flat bowl and check the float isn't full of fuel (no longer a float!)

Otherwise, clean, check and refit. It'll probably be fine, as it was when last used.
Click to expand...

Hi All

Thanks for your input. After looking at it further I gave up and bought a Torqeedo!

SWMBO is much happier as she no longer has to battle the 2 stroke thing and no more petrol onboard.
 
You must log in or register to reply here.

Share this page

Top