John deere 2020 spark plugs

[endrelund]

I have a 1967 john deere 2020 and was bringing it home from the farm today just to work on it and I was going up some hills and it didn't like it at all it dropped like 500 rpm when going up a small hill. I turned around to go back to the farm and it started running fine on the hills. I thought it was a bad idea to turn back around I was most of the way back. So I got new spark plugs put in and it's Very Very hard to get it started now it would pop right off with the old ones but now it's not happy at all. Do I just need to put the old plugs back in? Do I need to clean the carb for the new plugs? I don't know what the next step is. I thought the new plugs would fix it but it made it worse. Thank you

 

[TerryfromSWIowa]

Did you gap the plugs? Do one plug at a time so you could not cross wires? Check points gap?

 

[endrelund]

Did you gap the plugs? Do one plug at a time so you could not cross wires? Check points gap?

I did one at a time but nothing else it was running beautiful before then put the new plugs in and it ran like garbage

 

[wore out]

I have a 1967 john deere 2020 and was bringing it home from the farm today just to work on it and I was going up some hills and it didn't like it at all it dropped like 500 rpm when going up a small hill. I turned around to go back to the farm and it started running fine on the hills. I thought it was a bad idea to turn back around I was most of the way back. So I got new spark plugs put in and it's Very Very hard to get it started now it would pop right off with the old ones but now it's not happy at all. Do I just need to put the old plugs back in? Do I need to clean the carb for the new plugs? I don't know what the next step is. I thought the new plugs would fix it but it made it worse. Thank you

Make and part # of the old sparkplugs?

Make & part number of the new sparkplugs?

What did you gap the new ones to?

Any chance the sparkplug wires were damaged by needing a rough tug to get them off of the old sparkplugs?

Are the terminal ends all fully seated down on the new sparkplugs?

 

[Janicholson]

I have a 1967 john deere 2020 and was bringing it home from the farm today just to work on it and I was going up some hills and it didn't like it at all it dropped like 500 rpm when going up a small hill. I turned around to go back to the farm and it started running fine on the hills. I thought it was a bad idea to turn back around I was most of the way back. So I got new spark plugs put in and it's Very Very hard to get it started now it would pop right off with the old ones but now it's not happy at all. Do I just need to put the old plugs back in? Do I need to clean the carb for the new plugs? I don't know what the next step is. I thought the new plugs would fix it but it made it worse. Thank you

Welcome to YT forums! It may be that the issue is not plugs at all. So before changing the plugs back, diagnose the issue. Is there good steady flow of gasoline to the carb at the carb (drain plug on the carb should show a rush of fuel, then a steady stream as bug as a coffee stir stick) at least a pint every 2 minutes. Is there spark at the plugs. Is it running irregular or missing on rhythmic cylinders (steady misfire).
Does it start cold easily or bad no matter what? Jim

 

[endrelund]

Welcome to YT forums! It may be that the issue is not plugs at all. So before changing the plugs back, diagnose the issue. Is there good steady flow of gasoline to the carb at the carb (drain plug on the carb should show a rush of fuel, then a steady stream as bug as a coffee stir stick) at least a pint every 2 minutes. Is there spark at the plugs. Is it running irregular or missing on rhythmic cylinders (steady misfire).
Does it start cold easily or bad no matter what? Jim

Before I put the new plugs in it started wonderful no problems at all. Put the new plugs in and it would just hard hard Startin.

 

[plattman]

Before I put the new plugs in it started wonderful no problems at all. Put the new plugs in and it would just hard hard Startin.

so put the old plugs back in?

 

[endrelund]

so put the old plugs back in?

I'm thinking bout it

 

[wore out]

I'm thinking bout it

Yes, for gosh sakes DO that! And be sure not to give us any more details such as I asked for in my other post!

 

[endrelund]

Yes, for gosh sakes DO that! And be sure not to give us any more details such as I asked for in my other post!

I have no been back at the farm to look it's not at my house yet so I can't just go out and look at it

 

[Janicholson]

I have no been back at the farm to look it's not at my house yet so I can't just go out and look at it

If I read your original post, noting that it was having running issues, you were trying to fix a problem that happened, then went away. Sparkplugs don't do that, they stay bad. Unless the new plugs were totally shorted from the factory, they should operate as well as the original plugs, or better. Diagnosis is the first response. Changing parts as a diagnosis is the common practice that hides the issues and confounds the diagnosis. Jim