I have a 4440 that has been having problems for a while. Here's a timeline:
In the beginning it would stall out every once in a while. After a couple weeks of this I was using it and it started stalling every couple of minutes, I got it home and it sat for a while. Then when I started it up and it ran really rough, surging from 400 rpm to 1600 rpm with the throttle on full, eventually dying. Sometimes it wouldn't start at all, even with ether.
I replaced the hand primer (it leaked when you used it) and the fuel and air filters (including the screen in the sediment bowl). Didn't solve anything. I drained the fuel, blew air through the lines (thinking there may be sediment at the bottom of the tank), flushed it with diesel kleen, and reprimed it to the injection pump at every line. I added some diesel kleen and atf on the refill. It ran perfect for a several hour job, but on the way home it stalled a mile from the barn. It wouldnt restart, and the sediment bowl was not full of fuel. Pumped the hand primer a few times and it made it home. But now its surging again.
It's like its losing prime, but it isn't leaking fuel. Thought I'd also mention, I think this all started after I put diesel kleen in it at a fill up.
In the beginning it would stall out every once in a while. After a couple weeks of this I was using it and it started stalling every couple of minutes, I got it home and it sat for a while. Then when I started it up and it ran really rough, surging from 400 rpm to 1600 rpm with the throttle on full, eventually dying. Sometimes it wouldn't start at all, even with ether.
I replaced the hand primer (it leaked when you used it) and the fuel and air filters (including the screen in the sediment bowl). Didn't solve anything. I drained the fuel, blew air through the lines (thinking there may be sediment at the bottom of the tank), flushed it with diesel kleen, and reprimed it to the injection pump at every line. I added some diesel kleen and atf on the refill. It ran perfect for a several hour job, but on the way home it stalled a mile from the barn. It wouldnt restart, and the sediment bowl was not full of fuel. Pumped the hand primer a few times and it made it home. But now its surging again.
It's like its losing prime, but it isn't leaking fuel. Thought I'd also mention, I think this all started after I put diesel kleen in it at a fill up.