When the gas inside your stihl chain saw fuel tank heats up it creates pressure inside the tank.
Weed eater gas cap not venting.
The vented gas cap has a one way release valve that is pressure activated.
A fuel cap that does not vent properly may cause your engine to not run p.
When the pressure reaches a certain point defined by so many pounds per square inch the valve opens by a very small amount relieving some of the pressure.
Can anyone tell me how to check it though.
If the tank can t vent this added pressure fuel will stop flowing from the tank to the carburetor due to an imbalance in the atmospheric pressure and the tank pressure.
Lawnmower fuel cap venting test duration.
Rcurren01 rcurren echo srm 225 trimmer you can try with fuel cap off in case the caps vent is plugged not allowing fuel flow and or replace the filer in the tank if you have not already done so still no go if you say primer bulb shows fuel in it and you press the primer bulb say 10x and choke on and still no fuel in engine the carburetor is either not adjusted to allow fuel to enter.
This is one way of testing whether or not the gas cap on you lawn mower is venting.
Video showing a gas cap that is not venting causing a fuel starvation problem.
This particular fuel cap is specific to weed eater poulan husqvarna and paramount.
Echo string trimmer replace gas cap with seal valve.
Installing the new tank vent 4.
I have an extremely large amount of pressure in my tank if i remove either fuel line gas will shoot out at high pressures.
This is one way of testing whether or not the gas cap on you lawn mower is venting.
For the carburetor to work these.
Install the tank vent.
Slide the metal clip over the vent tube and position the clip approximately a quarter of an inch from the end of the tube.
Remove the metal clip from the end of the vent tube.
Remove the vent tube from the fuel tank by pulling the tube up and out of the fuel tank grommet.
The vented gas cap is designed to vent small amounts of air into the car gas tank line.
I m wondering if this has anything to do with my priming problems.
