ms660 clone pressure in gas thank

[Muzzleblastm38]

am running a clone ms660 with 100% kit parts and cutting slabs
for some reason i have a pressure build up in gas thank and is
it possible that why i have a running righ chainsaw
i adjust high speed and it take a second or two and its back so righ
if you have any trick thanks for the info

 

[lone wolf]

am running a clone ms660 with 100% kit parts and cutting slabs
for some reason i have a pressure build up in gas thank and is
it possible that why i have a running righ chainsaw
i adjust high speed and it take a second or two and its back so righ
if you have any trick thanks for the info

What is the temp there when this happened? Are you working it in Sun?

 

[Muzzleblastm38]

its 33 degre celcuis and sunny

 

[lone wolf]

its 33 degre celcuis and sunny

Are you using winter gas over there? That's what the symptoms of what you are experiencing sound like. Where are you located?

 

[Muzzleblastm38]

winter gas ? am in la peche quebec canada
and dont open the chainsaw gas thank in a forest fire its spay gas all over

 

[lone wolf]

winter gas ? am in la peche quebec canada
and dont open the chainsaw gas thank in a forest fire its spay gas all over

What farenheit is the temp there?

 

[Muzzleblastm38]

92 f

 

[lone wolf]

https://www.popularmechanics.com/ca...blend-gasoline-whats-the-difference-13747431/

 

[lone wolf]

92 f

That is plenty hot you need some different gas I bet it is the problem.

 

[Muzzleblastm38]

we have only one gas station in the region its going to be hard to find a different gas

 

[Muzzleblastm38]

but all my other chainsaw run good with the same blend

 

[Muzzleblastm38]

and when i open the gas thank of the chainsaw i see air comming out from the filter

 

[lone wolf]

we have only one gas station in the region its going to be hard to find a different gas

Keep the gas can in the shade and let the pressure out.

and when i open the gas thank of the chainsaw i see air comming out from the filter

The fuel is boiling in the heat.

 

[Muzzleblastm38]

is the gas thank supposed to vent both side or onlly one side

 

[ammoaddict]

Why do y'all call it a gas "thank" up there?

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[L34]

One way,air in,nothing out.

 

[Muzzleblastm38]

Bad translation

 

[Mad Professor]

What farenheit is the temp there?

9/5 oC + 32 = oF

I remember that from algebra I. Graph using slope and intercept........

mX + B =Y

m = slope

B = y-axis intercept

 

[trains]

its normal to build up pressure in the fuel tank when its hot.
when cutting at 35c here in australia, even when the tank is almost empty, it has pressure when you open the cap on the saw.

if your milling, thats going to create even more heat.

Pressure should not be an issue in how the engine runs in your saw, if it is, then you need to check the pop off pressure on the needle and seat, as thats what works against the tank pressure, if thats not correct, then it will allow more fuel into the carb than required, and you would have a rich running scenario when it gets hot.

Get an original stihl metering lever spring, most likely fix the issue, unless the needle seat area is suspect.

 

[ammoaddict]

All 3 pieces of my Stihl equipment spews gas out when you open the fuel cap. None of my Husqvarna stuff does.

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