Intermittent firing

[skuldragger]

Help with my A5 set-up for Co2, I've removed all upgrades(rva,spring kit) replaced battery, took it apart/rebuild 3 times, used HPA/CO2. but it'll fire, miss4 times,fire 3, miss 5. Any ideas?

[kill]

You don't clarify what you mean by intermittent firing? Are balls not being fed every shot, or is the EGrip trigger (assuming an Egrip because you mentioned replacing the battery) not tripping the sear every pull?

[skuldragger]

No balls in the marker.The marker gasses up OK,but when i pull the trigger the marker will fire twice click,click click,fire,click 5 times,fire once,click twice,etc. I replaced the o-rings on the front/rear bolt/and the tombstone recently.I'm not sure how to check if the sear is tripping or not.

[kill]

With an Egrip, when you pull the trigger, a solenoid in the bottom of your egrip pushes the armature pin up against the sear, which in turn releases the rear bolt to slide forward and fire the gun.

That clicking sound is the solenoid hitting the armature pin, but the pin is not pushing the sear up far enough every time you pull the trigger.

Check the following that can cause this problem:

Check that the battery wires are completely clear of the armature pin and not touching against it. You may have to take the grip halves apart to see all the way inside the grip.

Check the armature pin. The top end of it could be worn down from all the beating its had against the sear, and require replacing.

Check the sear resting pin. Pull the trigger assembly out of the grip, and remove one of the side trigger plates. The sear is the little metal part with a spring pushing against it. One end of the sear will be resting on a pin close to the back of the trigger. Remove and inspect this pin. If the ends of the pin are 'mushroomed' (like if you had been hitting the end of it with a mallet) with wear, replace it.

Check the pin that goes through the center hole of the sear for the same kind of damage as above.

Check the sear itself. Check the underside of the sear where the armature pin strikes it, it may be worn as well.

If in doubt, replace all four items and see if the problem is fixed.

[skuldragger]

Kill,your post was very informative,the armature pin in the A5 that isn't working is mushroomed.the sear resting pin appears to be intact,same thing with the center hole pin. The sear looks a little rounded on its corners where it strikes the pin.I'm calling Tippmann today for replacment parts.Karma for you
thanx SD

[Fultron]

APE Pro-E board firing issues. I posted on APE forum but haven't got it fixed yet. Heres what Ive posted.

"It doesn't fire on every trigger pull no mater which mode its set on. I've changed batteries and still same problem. The marker will fire once and recock and then not fire next trigger pull, then next pull it might fire and then it might not.
Tried all modes and still same problem. Set on full auto and when I get it to fire it won't fire steady it will stop and then start again while still holding down the trigger. While on full auto (Steady green light 3rd mode) it will sometimes continue to fire when I release the trigger.
Have the Pro-E trigger on it also. Looks like it adjusted correctly because you can view the switch from the front and I can see it left up the switch arm when I pull slightly on the trigger and it looks to be all the way down when I release the trigger.
Had a simular problem before but though it was the JCS double trigger not being adjusted correctly ( I dont know if you can adjust them correctly) so I got the Pro-E Trigger.
I dont use the marker allot. I've probably only shot about case and a half with this Pro-E board mod and half case with trigger. "

APE told me to try it without air and this is what I had happen.

".......swtched trigger on, switch to full auto mode, pulled trigger, (sound heard) light clicking noise for a few seconds then a hard clicking noise. Held trigger down for a good 5 minutes and it never stopped clicking or change to light clicking. Steady hard loud clicking. Released trigger and it stopped, pulled trigger and it clicked loud and continuous. Changed modes and worked the trigger according to each mode and it seamed to work correctly. Reading the setting adjustments I've only change full auto ROF. But I read what each setting can do and the last 2 had to do with debounce and ? Is there anybody experiencing firing problems on full auto?
I'm going to gas the marker up tonight and see how she does really firing because that was when I had the problem anyway when the marker was recoiling and stuff. "

Then they said to take the battery out and listen for the switch to click

"With battery out you can hear the switch click. Whats weird is I dont always here the solinoid click when it doesn't shoot, just ever so often. Most of the time its like pull trigger one shot let trigger up nothing pull trigger again maybe it shoots do that again same thing then like 2-3 times it will shoot and then resume not shooting.

I was trying to play the last game of the day so I switched it to full auto thinking when it does shoot at least a few more balls would get out there but it got to the point that when I pulled the trigger nothing and then when released the the marker would fire off a few shoots like on full auto. Thinking maybe the trigger switch gone bad anybody had that? HELP! "

Then they said it could be a sear or push rod issue but I tried it again with air and this is what happend

"I gassed it up a tried it. Whole different story. Again full auto mode. I did adjust the full auto debounce from 10 to 15 to see if it made a difference. It was like it was in semi mode, a shot every second or so but every once in a while I could move the trigger just right and get a full auto burst. But mostly if I just pulled and held the trigger it would fire real slow. It was intermitent firing and slow firing. If I held the marker level and upright it would do this, if I tilted or moved the marker while firing it would stop firing. I could here the solinoid clicking but the marker would fire, tried cocking it aging but it was already cocked just not firing.
Without air hooked up it seams as though the solinoid clicked no matter what possition I held the marker but with air hooked up it woudlnt' act right.
Now something else that I've noticed is on the Pro-E double trigger. The pin that goes through the sear keeps moving out and getting up against the inside of the marker. So much so that trying to take the grip off I have to work it side to side and pull really hard. It kinda wedges against the inside of the maker body. After I get it out the pin is sticking out just enough that I cant just slide the grip back onto the marker. I have to take a small punch and hammer and tap the pin back into the trigger frame until its flush then the grip will slide right in. It shouldn't be doing that either. How about I just send the whole marker to you and you fix it! I've adjusted the trigger probably 20 times in both dirrections it doesn't make a difference how the marker acts untill I get it where it doesn't close the switch when released. If I get it to tight you run out of trigger pull before the switch will release. "

Help

Fultron Out!

[kill]

Fulltron,

Let me see if I get this straight.

1. Without the gun gassed up, the solenoid continues to keep clicking everytime you pull the trigger.

2. With the gun gassed, the gun doesn't fire each pull.

If those two statements are true, then please answer these questions,

1. How old is your Egrip before you added the APE board? See my post above about checking the sear, armature pin, and plate pins. The fact that the grip stops tripping the sear when the gun is on its side, leads me to believe that something (perhaps wear) is obstructing the armature from fully hitting the sear, in some kind of way.

2. Do you still have the problem with the stock trigger. I recommend troubleshooting the problem with the stock trigger first, then adding the blade trigger later. Set the APE board to its defaults, until the gun begins firing correctly with the stock trigger.

And no, your sear pin should not be moving out while firing. Check it for wear/damage (as I posted above) and replace it. In fact, it may be a good idea to replace all the sear pins. If the new pin still slides out during firing, then you may have to replace the trigger plates as well. (All these parts dont cost much at all.) Moving pins will cause the sear to not sit properly, and a sear that is not sitting properly will not be tripped each time by the armature pin.