Piston head O-ring problem.

[glockmeister]

I realized today that my O-ring on my piston head didn't have a very good seal inside the cylinder and it wouldn't generate much air when the piston was cycling. It seems like a good idea to replace my O-ring. Do people do this if they have the same problem as me? Would you advise me doing so or could there be problems of doing so...

[Falcon7]

Did you test your compression? Put your finger on the nozzle of the cylinder head and push the piston through quickly. The o-rings are designed to expand inside the cylinder when the piston cycles quickly. If you try that and air leaks past the piston then you should replace your o-ring.

[glockmeister]

Should it stop the piston from moving or create a lot of resistance?

[Falcon7]

If you have good compression it should stop the piston altogether. Have you chronographed your gun? Unless it's been shooting significantly slower than it should I wouldn't worry about it.

[glockmeister]

Yeah it doesn't stop my piston. My gun is shooting at an astounding 250 feet per second. I had a worn down spring but I don't think the fps would of brought it down that much. I bought an m120 spring for it, and when I opened it up I realized the o ring problem.

[Nec]

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