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No possible way for the lines to be routed incorrectly, as the fuel line is internal (goes thru the manifold).

The auto oiler lets pressure from the combustion chamber into the oil tank by way of a check valve, two fittings and a metal tube. I removed the check valve and metal tube, and plugged the two fittings.

I don't think it's a pinhole because it'll only do it after running...?
It sounds like you need an IPL for that saw so you can see where and how the oil and fuel tanks mate together there may be a gasket of some kind if you were to split the saw that could possibly be failing.

It is only leaking fuel into the oil tank or both?
 
It sounds like you need an IPL for that saw so you can see where and how the oil and fuel tanks mate together there may be a gasket of some kind if you were to split the saw that could possibly be failing.

It is only leaking fuel into the oil tank or both?

I have several IPL's for this saw; all of the IPL's show that the tank is supposed to come apart. There's supposed to be a gasket and a removable cover on the flywheel side of the fuel tank. There aren't even any screw holes on the tank cover on the saw; the tank doesn't come apart.

I don't think it's leaking oil into the fuel, only fuel into the oil.
Does the fuel tank ever have pressure in it after running when you open the cap
Yes.
 
I have several IPL's for this saw; all of the IPL's show that the tank is supposed to come apart. There's supposed to be a gasket and a removable cover on the flywheel side of the fuel tank. There aren't even any screw holes on the tank cover on the saw; the tank doesn't come apart.

I don't think it's leaking oil into the fuel, only fuel into the oil.

Yes.
Does it have enough pressure in the tank that you can hear it escaping when you unscrew the lid I would bet my bottom dollar that something is leaking compression into the fuel tank and that is pressurizing the tank and causing fuel to get into your oil tank
 
In fact, it boils its fuel. Almost all of my Remingtons boil their fuel.
if it is in fact boiling the fuel or causing vaporization of any kind that will make pressure in the tank there is a leak of some kind between the two tanks perhaps only a crack that opens up when there is pressure in the fuel tank a way to test that theory would be to run it with the cap unscrewed slightly to vent the pressure off the tank if there is no fuel in your oil after that you will have found your problem after that you will have to figure out what is causing the leak
 
If it is in fact boiling the fuel or causing vaporization of any kind that will make pressure in the tank there is a leak of some kind between the two tanks perhaps only a crack if it is in fact boiling the fuel or causing vapor isation of any kind that will make pressure in the tank there is a leak of some kind between the two tanks perhaps only a crack that opens up when there is pressure in the fuel tank a way to test that theory would be to run it with the cap unscrewed slightly to vent the pressure off the tank if there is no fuel in your oil after that you will have found your problem after that you will have to figure out what is causing the leak
I'll try running it with the fuel cap loose.

Thanks for your help.
 
if it is in fact boiling the fuel or causing vaporization of any kind that will make pressure in the tank there is a leak of some kind between the two tanks perhaps only a crack that opens up when there is pressure in the fuel tank a way to test that theory would be to run it with the cap unscrewed slightly to vent the pressure off the tank if there is no fuel in your oil after that you will have found your problem after that you will have to figure out what is causing the leak
And if the outside of the tanks have been welded shut that means internally they could still separate under a certain amount of pressure because they wouldn't be able to weld down inside the tanks?
 
Hey guys, I realize this isn't a vintage saw question but this is the only forum worth following :) so I am posing a quick question here. I have a guy that wants to trade a boat to me for a running 55ish cc saw or repairing his Huqvarna 455. He replaced(or had) the carb replaced but can't get the saw to stay running, it just fires and dies. I haven't had a chance to take a look at it yet but am doing pre-research on it. Anyone here know of any issues with this saw?
 
Hey guys, I realize this isn't a vintage saw question but this is the only forum worth following :) so I am posing a quick question here. I have a guy that wants to trade a boat to me for a running 55ish cc saw or repairing his Huqvarna 455. He replaced(or had) the carb replaced but can't get the saw to stay running, it just fires and dies. I haven't had a chance to take a look at it yet but am doing pre-research on it. Anyone here know of any issues with this saw?
If it fires and dies, I'm still going to say a carb issue, possibly a impulse/fuel line problem. Haven't worked on any huskys, do they have an intake boot? That may be a problem also if it is cracked, but I doubt it. Nice potential trade by the way. Does it come with an outboard?
 
If it fires and dies, I'm still going to say a carb issue, possibly a impulse/fuel line problem. Haven't worked on any huskys, do they have an intake boot? That may be a problem also if it is cracked, but I doubt it. Nice potential trade by the way. Does it come with an outboard?
it comes with a 1967 evinrude 80 HP motor, trailer. the boat is a little small maybe 16' the boat looks a little dirty but otherwise intact. Trailer looks pretty solid.
 
Hey guys, I realize this isn't a vintage saw question but this is the only forum worth following :) so I am posing a quick question here. I have a guy that wants to trade a boat to me for a running 55ish cc saw or repairing his Huqvarna 455. He replaced(or had) the carb replaced but can't get the saw to stay running, it just fires and dies. I haven't had a chance to take a look at it yet but am doing pre-research on it. Anyone here know of any issues with this saw?
Those ranchers are notoriously bad about that from what I've seen, I think it's mostly a quality control issue because the carbs used in those saws aren't held to the same QC as their 3 series and 5 series saws are. There is also a lot of issues with overheating and not starting after the Saw heats up and that's right out of the box. I would say check all of the regulars, maybe look and see if there is a fuel line routing problem, where the fuel line will pinch shut, also check the fuel filter for any problems and the compression, make sure it didn't eat something and won't run now because it loses compression too quickly.

Edit: you might want to check and make sure the choke is working properly also
 

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