728 engine miss w/backfire when warm

/ 728 engine miss w/backfire when warm #1  

Bakerkid

New member
Joined
Jun 26, 2023
Messages
1
Tractor
John Deere 728, 1023, Farmall H
I have a 728 that after cutting longer than 30 minutes, will lose power and sounds like it is running on one cylinder. I replaced the plugs and I thought it was running better. I shut the tractor off to answer a phone call and when I restarted the tractor, the miss was back. When I shut the tractor off, there usually is one backfire. If I wait and let the tractor cool off, it will start and run fine until it gets warm again.
 
/ 728 engine miss w/backfire when warm #2  
Welcome to TBN

More history of the 728 would be helpful.

Assume it is the X728 mfg up until 2012?
 

Marketplace Items

2016 Peterbilt 337 S/A Flammable Liquid Transport Truck (A60352)
2016 Peterbilt 337...
New/Unused 2 Post Car Lift (A61165)
New/Unused 2 Post...
2018 JCB 3TS-8T SKID STEER (A62129)
2018 JCB 3TS-8T...
207278 (A52708)
207278 (A52708)
2014 International WorkStar 7300 4x4 Altec AA55E 55ft. Bucket Truck (A60352)
2014 International...
2018 Freightliner M2 106 AWD Altec AA55 56ft. Insulated Material Handling Bucket Truck (A60460)
2018 Freightliner...
 
Top