My usually reliable 12-year-old JD x320 tractor started stalling this Spring. I’ve mowed about a dozen times since but the basic pattern is the same: starts fine, stalls out after 20-40 minutes with a single backfire. Sometimes it starts right back up, other times it won’t start until I let it sit for 15-20 minutes. I made it through one mow without stalling at all but every other time it stalled anywhere from about 2-6 times.
Like every other year, I had done the usual recommended winterizing maintenance last Fall, including new fuel filter and plugs, added dry gas, etc. This issue started on the very first mow this Spring, so I thought somehow moisture still might have gotten in the fuel. Over the first few mows, I used up the old fuel and ran down the tank as low as I felt comfortable doing before refilling with fresh fuel; it made no difference. Gas cap valve is fine, too. Something happens as the engine gets warmed up, apparently.
I’m not a particularly mechanical guy but am always willing to try to figure stuff out and fix myself, if possible. I'm looking for any leads on what is most likely going on and what I might be able to do about it.
Thanks in advance for your advice.
Like every other year, I had done the usual recommended winterizing maintenance last Fall, including new fuel filter and plugs, added dry gas, etc. This issue started on the very first mow this Spring, so I thought somehow moisture still might have gotten in the fuel. Over the first few mows, I used up the old fuel and ran down the tank as low as I felt comfortable doing before refilling with fresh fuel; it made no difference. Gas cap valve is fine, too. Something happens as the engine gets warmed up, apparently.
I’m not a particularly mechanical guy but am always willing to try to figure stuff out and fix myself, if possible. I'm looking for any leads on what is most likely going on and what I might be able to do about it.
Thanks in advance for your advice.