New 1701P. Getting air in my face upon firing.

[Westypete]

I just received a brand new Crosman 1701P. I have put a dozen pellets through it and get a small puff of air in my face every shot. On closer inspection the air seems to be escaping from the depressurization access hole. I’m thinking it’s leaking from the valve. Any thoughts before I send it back? Thanks.

 

[SteveV]

I think that may be the hammer pushing the air in the space between it and the valve face?

 

[Struckat]

Mine does this too, just a slight puff.
Also my 362 is the same. I’ll buy the hammer as a reason as I have been over the 362, it’s not leaking when shot.

 

[maxtrouble]

I would send it back as well. I have a couple of thousand pellets through mine with no problems. No puff of air in the face when I fire it. Likes the RWS Diabolo Green Tin 7.0 the most. Great basement shooter!

 

[Steveoo]

This can be the from the seal inside the TP receiver block. NOT THE BREECH BOLT….
Sometimes the little seal gets squashed out of seating during assembly of the Receiver housing.
Air then leaks up along the back of the bolt shaft housing and vents out the back of the gun into your face..
Easy enough to strip down and reseat….Hope this helps you.

 

[Mike_Lenardon]

Its the hammer displacing air in the tube. A little air blows back out the adjustment hole

 

[Westypete]

Thanks to all! I’m so glad I found this forum. There is so much accumulated knowledge and everyone is willing to share with us less knowledgeable types.
I shot a couple 12 shot strings over the chronograph this morning, one after filling to 3000 psi and one from about 2300psi , results were:

3000. 2300

AVG. 426. 457
ES. 38. 17
SD. 12. 5

The spread seems a bit high to me but I’m used to numbers from rifles and most of them regulated. Have any of you chronographed your 1701s? If no one sees anything alarming I think I’ll keep the gun for awhile,mount the rear sight and see what kind of accuracy I get. I have to say this trigger is amazing right out of the box.

 

[Struckat]

I have not run strings on mine. I have only filled 4 times or so. But I did check speed a few times on a fill. 7.0 grain, 200 BAR was in the 490s. Then midway it was 500 and change. As I approached 150BAR it dipped below 500fps and then fell off fast. 50 shots or so, I was t real worried about count.

Vague, but it satisfied me.

 

[Steveoo]

Yes there can be a tiny bit of blow back from from the hammer but i have never really felt it …perhaps detecting it with talc at the rear of the receiver.…but for me, together with your vel being a touch low, (426fps avg) suggesting you may have the TP port leak i mentioned.
They usually run 465 to 495 OEM..

 

[Westypete]

Thanks all.Everything considered I think I’ll send it back for exchange. There seems to be enough evidence to suggest something significant is amiss. Crosman technical assistance and Utah Airguns agree so off she goes.
if anyone has been thinking about buying one ,Utah air has them for sale at $320 with free shipping.

 

[Westypete]

Update. Utah Airguns exchanged my 1701P for me. The new gun has minimal air blowing from the same location, much improved from the original. I would never have noticed it had I not been looking for it on this gun. Thanks again for all your help!

 

[Simplemann]

Update. Utah Airguns exchanged my 1701P for me. The new gun has minimal air blowing from the same location, much improved from the original. I would never have noticed it had I not been looking for it on this gun. Thanks again for all your help!

I've not done business with Utah Airguns but I've heard good customer service stories and yours just added a notch on the scale for them. Thanks for sharing your experience .

 

[Struckat]

Glad they took care of you.

It’s very slight with mine and I am running just above and below 500fps.

It’s a really nice pistol.

 

[iAMzehTOASTY1]

Thanks to all! I’m so glad I found this forum. There is so much accumulated knowledge and everyone is willing to share with us less knowledgeable types.
I shot a couple 12 shot strings over the chronograph this morning, one after filling to 3000 psi and one from about 2300psi , results were:

3000. 2300

AVG. 426. 457
ES. 38. 17
SD. 12. 5

The spread seems a bit high to me but I’m used to numbers from rifles and most of them regulated. Have any of you chronographed your 1701s? If no one sees anything alarming I think I’ll keep the gun for awhile,mount the rear sight and see what kind of accuracy I get. I have to say this trigger is amazing right out of the box.

That's why I joined up! Haha I've learned so much here and hopefully have spread a bit of knowledge as well

 

[Struckat]

What pellets are you shooting?
I am around 500with a 7gr

 

[Westypete]

@Struckat, the JSB 7.3s are running 460-485fps .I’ve found I need to fill to about 2800 psi for optimum strings, velocity is just to low at 3000psi.

 

[davelarson]

They are excellent pistols aren’t they?!
Totally scope worthy as well as off hand.
Here’s mine, just picked it up from the classifieds here and absolutely love it.
Shoots the 7 grain RWS wad cutters very nicely. I also really like the red dot on it too. These flys were shot at 7 yards from the recliner lol!

 

[Westypete]

They are excellent pistols aren’t they?!
Totally scope worthy as well as off hand.
Here’s mine, just picked it up from the classifieds here and absolutely love it.
Shoots the 7 grain RWS wad cutters very nicely. I also really like the red dot on it too. These flys were shot at 7 yards from the recliner lol! I View attachment 308673

Nice shooting.Love mine but can’t shoot like that. Thanks for RWS recommendation.

 

[davelarson]

Westypete, All shots at the flys were taken sitting in the recliner with feet up and shooting sticks across the knees and leaning back lol!
Really solid shooting platform, I bet you would do very well at my indoor range .
Plus I shoot way more than I probably should, it’s my favorite pastime so I’m really used to the indoor range lol!
If’n I was still married I’m sure it wouldn’t go over well.