Canadian Airgun Forum

The #1 Community for Airguns in Canada!
It is currently Wed Nov 20, 2019 11:34 am

All times are UTC - 5 hours


The Canadian Airgun Forums are a place for people to discuss and learn about airguns and the airgunning sport in Canada. There are lots of discussions about airguns, airgun accessories, reviews, modification and repair information, airgun events, field target and free classifieds!

 

You need to register before you can post: click the register link to proceed. Before you register, please read the forum rules. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload your own pictures, and access many other special features. Registration is fast, simple, and absolutely free! To start viewing messages, select the forum that you want to visit from the selection below.








Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: Crosman M4 177
PostPosted: Sun Feb 22, 2015 5:54 pm 
Offline

Joined: Thu Feb 12, 2015 5:23 pm
Posts: 5
Hey folks,

New to this site. Hi from PEI. Bought one of these at CDN tire 3 weeks ago. Was working fine, took it outside in the cold (not sure if that affects anything), now it won't fire.

It feels like the air chamber is full. Bolt pulls back and loads and clicks but no power.

I have not called Crosman yet.

Anyone ever experience this ?

Rob


Top
 Profile  
 
 Post subject: Re: Crosman M4 177
PostPosted: Sun Feb 22, 2015 9:54 pm 
Offline
User avatar

Joined: Sun Feb 10, 2013 1:16 pm
Posts: 1787
Hi Rob, welcome to the forum.

Does the click sound like a healthy hammer hit? I can only think of two likely problems, one would be a broken hammer spring (never seen it happen, but I guess it's possible), in which case the click would sound pretty wimpy. The other possibility is overpumping leading to valve lock - the hammer can't overcome the pressure in the valve to let the air out. That would be unusual with any unmodified Crosman pumper as you'd have to work so hard to get to that point. If it's valve lock it will probably sort itself out if you leave it alone for a few days as the air will gradually leak out. Make sure there's nothing in the barrel so you don't occidentally forget when the gun suddenly becomes fireable a week or so down the line...

Jim


Top
 Profile  
 
 Post subject: Re: Crosman M4 177
PostPosted: Tue Feb 24, 2015 10:52 pm 
Offline
User avatar

Joined: Wed Oct 17, 2007 3:27 am
Posts: 2586
Location: Winnipeg, Canada
My grandson's M-4 acted the same way. Turned out it had 10 or so pellets stacked in the bore.
Those slidey mags can be a distraction from the shooting sequence for the younger, blissfully un-aware set :wink:

My problem with the slidey mags is that I keep forgetting to cock the action after pumping.

This would be a good excuse to take the gun apart, and void your warranty. They are not that hard to work on.
Only dis-assembly problems I've run across is the b.b. spring, and the safety spring and detent ball. Covering the receiver halves with a towel during disassembly or similar will prevent lost parts.

If it is valve lock, you may be able to access the valve stem without having to take the pump arm off. Rapping the end of the stem with a brass drift and hammer may get the valve vented enough for the gun to work again..

Regards,

Doc Sharptail

_________________
"Ain't no half-way"
-S.R.V.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 0 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
News News Site map Site map SitemapIndex SitemapIndex RSS Feed RSS Feed Channel list Channel list

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group

phpBB SEO