Classic Valve "Chuffing"

[mobsterboy]

classic valve is "chuffing" as they call it
Air it up and it shoots out air through the bolt
pull the trigger and it sounds like its shooting fast but not hard,
YES: Im using co2
NO: No x chamber yet
Its got a venturi bolt on it
I'm going to oil it up and try again, but i don't have air so it will have to wait till tomorrow at least
Any Ideas

[athomas]

Perform the level 7 basic check. Hold the trigger. If it leaks out the front of the gun and sounds like a lawn sprinkler, then the on-off top o-ring is bad. If it doesn't leak at all, then check/replace the powertube o-ring. If it still leaks, use a shorter powertube spacer. Chuffing at this point is usually caused by a weak bolt spring.

[mobsterboy]

yeah, it sounded like a lawn sprinkler, so replace the top oring?

[athomas]

Yes, replace the small white top o-ring on the on-off assembly.