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Author Topic: T68 (gen 6) firing issues PLEASE HELP!!!!  (Read 651 times)

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Offline Taija Willson-Rymer

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T68 (gen 6) firing issues PLEASE HELP!!!!
« on: June 03, 2013, 02:37:49 PM »
My T-68 will only fire 4-9 paint balls then it makes a machine gun sound and chop balls.
it is not the air tank nor the O-rings.

I bought it off craigslist a few weeks ago. i clean it and oil it at the end of every day.

Offline sir paintalot

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Re: T68 (gen 6) firing issues PLEASE HELP!!!!
« Reply #1 on: June 04, 2013, 01:38:40 PM »
That's usually caused by:

- Weak main spring
- Bad hammer o-ring
- Malfunctioning Anti-Chop bolt

With no paintballs loaded will it "machine gun" eventually when you dry fire it? Or only with paint loaded?

Install a new o-ring on the hammer even if it looks fine.

Offline Taija Willson-Rymer

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Re: T68 (gen 6) firing issues PLEASE HELP!!!!
« Reply #2 on: June 04, 2013, 05:19:12 PM »
when i dry fire it fires once and the second one is usually a burst. when i shoot it with paint inside of it, it will fire i have changed out all the O-rings at least twice, I doubt it the spring but about 4-9 times and then either do a burst and chop paint or do the full auto sound.

thanks for the help in advaced ;D

here is a clip of what happens when its loaded "
"
« Last Edit: June 04, 2013, 05:26:45 PM by Taija Willson-Rymer »

Offline azntactical

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Re: T68 (gen 6) firing issues PLEASE HELP!!!!
« Reply #3 on: June 05, 2013, 01:12:07 PM »
Are you using a lok bolt and anti chop bolt?

Offline sir paintalot

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Re: T68 (gen 6) firing issues PLEASE HELP!!!!
« Reply #4 on: June 05, 2013, 02:23:28 PM »
Like many things its a process of elimination. So I would:

- Borrow a friends tank to eliminate that as a possibility
- Inspect the hammer and sear for excessive/abnormal wear
- Inspect the trigger group to make sure everything is moving properly (springs attached, sear moves)
- Chrono the marker to see what the velocity is (too low = valve not staying open long enough = not enough blowback to reset the hammer)
- Go back to using your stock bolt if you aren't already

Rarely but sometimes excessive oil/grease can cause problems.
Your main spring should be roughly 12.5cm long, if your marker is left in a cocked position over time the spring can lose its springiness. If you are chronoing low, give your spring a little stretch, but don't over do it.