12 replies to this topic

[manofnerf]

I just bought a 4B and out of the box I pumped it 20 times.
I realized that there was no resistance like a magstrike pump.
I pumped for 2 sraight minutes and nothing... not even air leaking.
Is it a bum gun or did I not do something right?

[flashflint]

Just return it, no need to make a topic. If you buy a gun from a local store and it does not work, you just return it.

[rokor]

Just return it, no need to make a topic. If you buy a gun from a local store and it does not work, you just return it.

I think it works, it's just he has no experience/knowledge with the OPRV valve. The OPRV valve is what keeps your tank from exploding. When you pump to many time it will let a certain amount of air pass alowing you NOT to over pump. If it fires, then it is normal. If not, then just return it.

Edited by rokor, 21 January 2009 - 09:42 PM.

[DJ Mashbot]

If you're interested in fixing it yourself, open it up and check it out. My guess is that your firing valve might be sticking open. Push it all the way in and glue the end of it to the trigger if this is the case.

[ilzot]

Happened to me... I bought it and had to pump it quite a bit to even get my first shot off. I twisted the pump a bit and smacked it a few times and wiggled the barrel etc. It worked after 10-15 minutes of working on it. I would have returned it, but I bought it at $5 and Below, and they have a no-return policy.... so I was stuck with it.

[k9turrent]

...had to pump it quite a bit to even get my first shot off. I twisted the pump a bit and smacked it a few times and wiggled the barrel etc. It worked after 10-15 minutes of working on it. ...

Ha...sigg'd

[Pokechan]

Same thing here. Its the ugly green one right? Well you have to pump it like VIGOROUSLY! Like, force it in! I almost returned it, but it will get easier and easier.

[ilzot]

ROFL. Didn't even notice my now-quoted phrase XD

[nerfnut23]

Open it, chances are, the dump valve is jammed. If so, wiggle it until it pops into the hole.......................................................................Oh god, don't sig that!

[hornet]

The new green ones have a small pump oring. you can put a larger oring on or wrap the original in etape. both of those methods work as long as you lube it.

[manofnerf]

Fixed the problem. O-ring was too small and I had a broken nf so I wrapped the plungerhead in e-tape and put the nf o-ring in it. Used it in a war with my friends today and it worked like a dream.

thanks guys

[venom213]

The new green ones have a small pump oring. you can put a larger oring on or wrap the original in etape. both of those methods work as long as you lube it.

I had that problem too. I just got a new green 4b at a thrift store yesterday and it took more pumps than usual to fill the tank, I thought the O-ring was dry, but I guess it was just too small. I replaced it with one from a Spy Gear Signal Launcher and now it works great.

Also has anyone noticed that the holes where the air comes out are a lot smaller than they use to be? And the missiles don't have that weight in them that they used to? I guess buzz bee thought it was too unsafe.

Edited by venom213, 25 January 2009 - 01:22 PM.

[lambchop]

What size O-ring would work well for the pump. I tested the nitefinder O-ring alone and worked great.

Edited by lambchop, 03 February 2009 - 10:01 AM.