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Old 05-21-2014, 01:42 PM #1
prone2wander
 
 
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Blitz rapid firing on its own.

I was at the field on Sunday and test fired my gun and my bolt started going back and forth rapidly until all the air was gone. I know I have heard of this before but looking for a quick fix. I test fired again and same thing with no air apparantly leaking from the ASA or regulator. Any help apprectated.
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Old 05-21-2014, 01:47 PM #2
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high or low velocity while this is happening?
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Old 05-21-2014, 01:56 PM #3
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Does your blitz have a ZERO system??? How far did you turn your regulator in/out??? How far did you turn your velocity adjustment in/out???

I ask because if your reg isn't allowing enough air to flow then your marker can't complete a cycle. Also if your velocity screw is to far in then the marker can't complete a cycle unless you have more air coming in through the reg. You have to reset everything to it's original set points. After you do this try and cycle your marker then make adjustments to the reg then the velocity screw.

Lastly what kind of tank are you using HPA or Co2??? This can also cause a difference as to how your marker acts while tuning.

iPS
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Old 05-21-2014, 03:43 PM #4
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Sounds like it wasn't recocking? Check the o-ring on the striker bolt, and then check your breach and bolt to make sure they're clear of any paint.

And if those are taken care of, all you need to do is tune the velocity/reg pressure.
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Old 05-21-2014, 03:46 PM #5
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I have a ninja HPA regulator is set at 750-850. I have the 2011 Blitz with the original delrin bolt. I had just started adjusting the velocity on the regulator because I had fired a couple of shots and it was over 300fps. I hadn't yet touched the velocity regulator. It is possible I could of turned the regulator adjustment the wrong way, if that helps.
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Old 05-21-2014, 03:57 PM #6
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So there was no paint coming out? Lube your striker oring and set reg to 5 1/2 turns out.
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Old 05-21-2014, 06:01 PM #7
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Thanks for the replies. I replaced and lubed my striker ring, turned the reg 5.5 turns out like you said, and now I found air coming out of my regulator. I'll try tighting the reg a turn or two and if that doesn't work I guess time to replace the regulator O-rings and see what happens.
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Old 05-21-2014, 06:07 PM #8
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Where is it leaking from the reg?
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Old 05-21-2014, 09:58 PM #9
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It seemed to be just below the swivel mount.
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Old 05-21-2014, 10:00 PM #10
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Possible, but rare. If its leaking around the swivel, pull the reg apart and replace the orings just inside the collar.
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Old 05-23-2014, 02:34 PM #11
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It was my piston O-ring, the second I replaced this year. Still no sure what caused the original problem, I lube the striker ring before each time I play.
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Old 05-23-2014, 10:46 PM #12
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Well, I test fired it and it will shoot but only air. Nothing broke and no balls are entering the chamber. I am having to manually re-cock it. I checked and cleaned the eyes but nada. The Velocity Jr is working fine. Probably something obviouse but I have no clue what it is. Any help would be much appreciated.
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Old 05-23-2014, 11:23 PM #13
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So its firing, but not recocking?
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Old 05-23-2014, 11:41 PM #14
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yes but balls are not entering the breach
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Old 05-24-2014, 08:12 AM #15
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Even when you manually cock it?
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Old 05-24-2014, 09:24 AM #16
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Correct, not even when I cock it. With eyes turned off, still no paint coming out and only manually recocking. I am down to replacing eyes or board? I'll call Azodin on Tuesday but I would really like to use it on Sunday. Also plan on attending OK D-Day but if I send it to Azodin, I doubt it will be back by then.

Last edited by prone2wander : 05-24-2014 at 09:36 AM.
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Old 05-24-2014, 10:23 AM #17
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Am I way off the ball in saying something about detents maybe?
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Old 05-24-2014, 10:42 AM #18
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Thanks, the detents look good. When I get home from work, I will take the eyes out again and clean. Tomorrow the guy at the field is an air tech and see if he can find something. If you have any other thoughts let me know. BTW, put in fresh new battery and no change.
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Old 05-24-2014, 12:04 PM #19
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I have read this thread so many times and I can't understand what exactly is the problem. Your Blitz rapid fires when you don't want it to, it won't re-cock on it's own, it won't feed any balls into the breach, it allows puffs of air when you are able to fire it and lastly it won't complete a cycle.

Have you done a full set-point reset to resolve the rapid fire issue???
(set everything to it's default setup)

Have you checked to see if the balls are actually passing the feedneck into the breach??? (maybe the clamp is so tight the balls can't pass the feedneck)

If they are making it through do they then break in the breach while trying to cycle??? (does the striker/bolt move with enough force to push the balls past detents)

Lastly have you checked the valve pin area for debris??? (may cause low air pressure, slows moving parts and recocking issues)

It seems like you have an air restriction somewhere. clean everything that the air touches and try to shoot it again. I really want to see you solve this problem but it seems like you have tried everything and more.

I'm stumped....., iPS
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Old 05-24-2014, 06:06 PM #20
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Thanks iPS I'll give those things a look. In going over my gun I noticed that the striker has what looks like a large nick in it just on the rim toward the barrel side of the red o-ring. Can someone with a Blitz confirm if that it is suppose to be there. Thanks again for all your help.
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Old 05-24-2014, 08:02 PM #21
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I'm pretty sure there is not suppose to be a nick/notch in the striker face. Although That may not be your issue.

What kind of lube are you using for the striker o-ring?


Just to test if balls are loading, take the bolt out, put your mask on, air up and shoot.....looking to see that balls are dropping into the breach. None should actually fire. This will also check if the striker is resetting back on the sear without having the weight of the bolt to take with it. Check the edge of your sear and the sear notch on the striker to ensure that they are not rounding.

As others have said before, it sounds like there is not enough air pressure "blowing back" the striker/bolt far enough for the sear to catch it, resulting in possibly a short return stroke that isn't far enough back to let a ball drop into the breach.

Back to that nick on the striker - have you looked into the lower tube with a light to see if there is any damage to the walls (like a large. deep scratch)?

Lastly, is everything in the lower tube (striker, valve, poppet, springs, poppet guide, etc.) present and assembled correctly?

Have you made ANY modifications, even little ones, to the marker. The blow-back operation can be a delicate balance in spring tensions and air pressure. Something like stretching a spring a little can throw that balance off and the result is a marker that does not work properly.
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