Ithaca 37 Misfire
Moderator: Colonel26
8 posts
• Page 1 of 1
Copper BB
Posts: 3
Joined: Fri Jan 27, 2012 9:41 pm  |
 Posted: Fri Jan 27, 2012 9:46 pm
My friend's Ithaca 37 has an intermittent misfire. It is a 1974 model and appears to be used very little. I have cleaned and oiled it but the misfire is still there ...........sometimes. When the gun is loaded with 3 rounds, the first one will misfire and the next two will fire. The round which misfires has no indention whatsover on the primer. I have repeated this scenario several times. Thanks for any ideas.
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doctormdds's Profile
 .270 WIN
Posts: 118
Joined: Thu Dec 08, 2011 11:05 am |
Posted: Sat Jan 28, 2012 10:41 am
My father in-law has a remmington 7600, in 30-06. It was doing that exact same thing....1st round miss, primer unmarked, the others fired fine.
He took it to a local gunsmith and was told he was oiling it too much and the firing pin was sticking due to too much oiling. It's never happened again. Not sure if this is gonna be your problem or not, but if so an easy repair. Good luck in sorting this out. |
.270 WIN
Posts: 207
Joined: Fri Sep 02, 2011 4:33 pm Location: Nova Scotia,Canada |
Posted: Sat Jan 28, 2012 11:44 am
Is the bolt fully locked in for the first shot?If it is not that could br your trouble.
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 Moderator
Posts: 1108
Joined: Sat Aug 20, 2011 10:23 am Location: PENNSYLVANIA  |
Posted: Sun Jan 29, 2012 5:25 pm
Welcome to the Ithaca Owners Forum doctormdds !!
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Copper BB
Posts: 3
Joined: Fri Jan 27, 2012 9:41 pm |
Posted: Tue Jan 31, 2012 9:47 pm
I have disassembled the gun and cleaned and oiled it well. It wasn't dirty to begin with and there was not too much oil on any of the parts. Break Free CLP was used so I'm sure it isn't gummed up. When I shift the first shell in the chamber, I do it briskly and firmly. Still, it doesn't go off. The hammber can be felt falling forward but the primer is not touched.
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 Vendor
Posts: 766
Joined: Fri Sep 09, 2011 5:06 am Location: Nashua, NH |
Posted: Wed Feb 01, 2012 5:35 am
The only thing I can think of is to try and replace the firing pin spring. If they fatigue, you won't always get enough rebound.
--Jim
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ravengunsmith's Website
Copper BB
Posts: 3
Joined: Fri Jan 27, 2012 9:41 pm |
Posted: Thu Feb 02, 2012 8:46 pm
Thanks ravengunsmith. I will take it apart again and remove the firing pin and spring to check it.
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Vendor
Posts: 766
Joined: Fri Sep 09, 2011 5:06 am Location: Nashua, NH |
Posted: Fri Feb 03, 2012 8:46 pm
you're welcome Doc. Intermittant problems like this are the most frustrating, to be sure, but when it comes to misfires it is often either the spring or the firing pin. Since you had it apart, I seriously doubt you have a broken firing pin. you might want to run a pipe cleaner down the tunnel where the firing pin lives too. That is a tough place to clean. --Jim
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