JD 790 springtime start up problems
JKWill
Join Date: Mar 2014 Posts: 2 Georgia |
2014-03-22 189720
Hey guys...first post.
JD 790 (13-14 year old-600 hours). Do all normal maintenance. Ran my fuel tank dry 12-15months ago. Filled with good fresh fuel and installed new battery . Fired right up, but throttle control had no effect on RPMs, which went to max (2500ish) and stayed there despite throttle position for about 15 seconds, then slowly and steadily decreased until it just shut off. Pulled side cover, cleaned and lubricated linkage, Fuel filter had little use and looked good, but I replaced it anyway and cleaned (barely dirty) air filter.
The dash lights come on normally,It CLICKS very loud and the starter cranks likes it's brand new. But it will not fire. Not a lick.
I cycled all the levers and switches several times, checked the one under the seat (positionally, not electrically).
Any ideas? Poor as a church mouse and had a little cutting job would have provided a couple of desperately needed Benjamins.
Bought the battery and downloaded a repair manual with that in mind, but now I'm just stuck and she is mad and cancelled job...sigh. City folks.
Still need a working tractor out here Could really use some help.
JW
Reply to | Quote Reply | Add Photo
JD 790 springtime start up problems
treeman
Join Date: Feb 2002 Posts: 251 Wisconsin Pics |
2014-03-22 189721
Did you bleed the fuel lines since you ran it out of fuel? Do that first. Sometimes last resort is full throttle while cranking until it fires. ....
Reply to | Quote Reply | Add Photo
JD 790 springtime start up problems
jdgreen
Join Date: Jul 2003 Posts: 232 Maryland |
2014-03-22 189727
First of all, I don't recommend running a diesel out of fuel for storage purposes. Running out of fuel is never a good thing since the fuel is the lubricant for the pump. Running it dry and then sitting for a period of time dry could have seized the pump. With that said, when you had the side cover off, did you crank the engine over while it was open? You should be able to see the injection pump plungers moving up and down wile engine is cranking. If plungers are not moving, it will never start. SInce you say it ran briefly, I assume you bled out the system. I would still try bleeding again as long as pump plungers are working. There could still be a pocket of trapped air. ....
Reply to | Quote Reply | Add Photo
Go Top
Share This