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Old 07-05-2011, 01:06 AM
whiffyspark whiffyspark is online now
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Join Date: Jul 2011
Location: Southern Maryland
Posts: 5,719
JD 4400 Yanmar Won't run

My JD 4400 Isn't getting fuel past the injection pump. The tractor had been sitting for a couple years, I drained the fuel changed filters, lines, etc. and now it won't start. If I give it a wiff of wd40 it'll run, but i'm not getting any fuel out of the injector lines. I've tried bleeding them with the plunger to no avail. The soleniod has a loud click and i'm getting over 12 volts at it with the key on so I don't think it is the solenoid or thermistor. I'm getting fuel to the pump.

If i crack open either line on the pump fuel comes out, but it won't come out of the injector line no matter what i do.

Any Ideas?

Thanks, Mike
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