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Case 310 crawler


 
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Poochie
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Joined: 03 Feb 2020
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PostPosted: Mon Feb 03, 2020 9:45 am    Post subject: Case 310 crawler Reply to specific post Reply with quote

Hi all, been following this site for many years and finally registered. I just purchased a Case 310 crawler with a gas G148 motor. Hadn t been ran in fifteen years. Rebuilt the carb, new plugs, wires, cap, rotor, condenser,points, coil. Fired right up but I m getting a small backfire/pop through the carb. If I pull off the #3 cylinder wire while it s running the backfire goes away. Played with timing a bit and no difference. Any suggestions? Possible stuck valve? Thanks, I appreciate any suggestions as I m running out of solutions.
 
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el6147
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PostPosted: Mon Feb 03, 2020 10:54 am    Post subject: Re: Case 310 crawler Reply to specific post Reply with quote

Possible sticking or slightly burned intake valve, check compression.
 
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Poochie
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PostPosted: Mon Feb 03, 2020 11:03 am    Post subject: Re: Case 310 crawler Reply to specific post Reply with quote

Thanks for the advise. I did check the # 3 cylinder and it was at 90. Didn?t have time to compare to the other cylinders but I?ll check them tonight.
 
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Poochie
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PostPosted: Tue Feb 04, 2020 9:07 am    Post subject: Re: Case 310 crawler Reply to specific post Reply with quote

Checked compression on all cylinders and they?re all above 90. Put some Risilone additive in the oil and ran for 30 minutes last night to see if that may free up a sticking valve. Will run again tonight and see what happens. Any other ideas?
 
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pinball
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PostPosted: Wed Feb 05, 2020 7:23 pm    Post subject: Re: Case 310 crawler Reply to specific post Reply with quote

close your fuel shut off valve under the seat. start it up and open the valve just enough to keep it running and see if that helps. worth a try
 
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Poochie
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PostPosted: Thu Feb 13, 2020 6:14 pm    Post subject: Re: Case 310 crawler Reply to specific post Reply with quote

Well. Took the valve cover off and found a stuck valve and bent push rod. Pulled the head, got the valve unstuck, replaced the push rod. Runs great
now😀
 
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