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case 300 backfires
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- 10+ Years
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- Joined: Thu Dec 15, 2011 4:19 pm
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case 300 backfires
Would a bad condenser cause a case 300 to miss and backfire? Rebuilt dist was installed and ran for 3-4 hours then started acting up. Tried a new coil but no better. Starts when it's cold but misfires within minutes of running and get's worse as it's runs. Any suggestions?
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- Cub Pro
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Re: case 300 backfires
A condenser can cause it, but so can a worn distributor shaft. check for side play that may be causing the point gap to change while it is running.
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- 10+ Years
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- Joined: Thu Dec 15, 2011 4:19 pm
- Zip Code: 49910
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Re: case 300 backfires
Their is a new/rebuilt dis with new points and condenser in the machine. The motor was rebuilt and has not run right from the get go. Been this way for over a year. I installed the rebuilt dis because the old one had over .050 side play in the shaft and thought I had it solved. No such luck. Ran fine for two hours then started acting up again. That's why I was thinking a bad condenser.
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- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
Re: case 300 backfires
Sounds like time to look at valve adjustment and cam timing.
If you are not part of the solution,
you are part of the problem!!!
you are part of the problem!!!
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- 10+ Years
- Posts: 97
- Joined: Thu Dec 15, 2011 4:19 pm
- Zip Code: 49910
- Circle of Safety: Y
Re: case 300 backfires
That's not a bad idea. Figured they were out of play as the motor was farmed out to a rebuilder. His reply when first contacted was "it was running fine in our shop". Guess it's time to get back to basics.
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Re: case 300 backfires
Since your distributor is freshly rebuilt, it may have worn in a little and changed the point gap. I think I'd check that first. It could be a bad condenser, though.
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- 10+ Years
- Posts: 97
- Joined: Thu Dec 15, 2011 4:19 pm
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Re: case 300 backfires
Finally had time to work on the 300. Tried a new coil out of my cub and it still would not run right. Better but something was still wrong. Replaced the cond. and put a new coil on and it's running just fine. Sure feels good to get it back up and running again. Thanks for all the help.
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