I recently bought this tractor used and since getting it home it has surged or lost power (with a gas smell when it loses power) and then surged back to full power. It happens both when mower is engaged and not. What I've looked at so far:
-tested the solenoid under the carb and it worked well.
-removed the existing fuel and put fresh ethanol free unleaded in.
-sea foam soak in the carb (while still installed, I did not yet tear it down)
Plugs look equal and dry. I have heard the fuel cap can form a vaccum, but mine seems fine.
Today I took the solenoid off and removed the plunger, magnet and spring and reinstalled the solenoid body along with an in line fuel shutoff valve. I was thinking it was possibly working intermittently. I drove it while mowing for 45 minutes after that with no issues. Hooked up my leaf vacuum and pulled that around for another hour with no problems. This whole time the hood was still sitting in my garage, so while unloading one of the last loads of leaves, I put the hood back on. Surging returned. Took it off and it went away, almost like a switch.
Any ideas on this one? I'd like the hood on when the snow starts flying as it came with a snow blade.
-tested the solenoid under the carb and it worked well.
-removed the existing fuel and put fresh ethanol free unleaded in.
-sea foam soak in the carb (while still installed, I did not yet tear it down)
Plugs look equal and dry. I have heard the fuel cap can form a vaccum, but mine seems fine.
Today I took the solenoid off and removed the plunger, magnet and spring and reinstalled the solenoid body along with an in line fuel shutoff valve. I was thinking it was possibly working intermittently. I drove it while mowing for 45 minutes after that with no issues. Hooked up my leaf vacuum and pulled that around for another hour with no problems. This whole time the hood was still sitting in my garage, so while unloading one of the last loads of leaves, I put the hood back on. Surging returned. Took it off and it went away, almost like a switch.
Any ideas on this one? I'd like the hood on when the snow starts flying as it came with a snow blade.
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