| Author |
 Topic Search  Topic Options
|
critter 
Silver Level Access
Joined: 13 Nov 2013
Location: Ohio
Points: 254
|
 Post Options
 Thanks(0)
 Quote  Reply
 Topic: 7040 fuel pump problem
Posted: 03 Jul 2015 at 6:26pm |
|
Last week our 7040 (about 6800 Hrs) wouldn't idle below 1000 rpm it would just stall, ever since we have had it the rpms would bounce around when running under 1000 rpm. Now the throttle seems sluggish slow to rev up and slow to slow down, after setting for about a week I fired it up and it wouldn't rev above 1000 no mater where the throttle was, shut it off and restarted it and the throttle worked although sluggish. It is the roosa master pump
I already changed the fuel filter and that made no change.
Seems to me something is getting stuck or sticky in the pump is there anything I can check in the pump or is it time for a rebuild?
Will it hurt anything to keep running it like this?
|
 |
|
Sponsored Links
|
|
|
injpumpEd
Orange Level Access
Joined: 13 Sep 2009
Location: Walnut IL
Points: 5097
|
Post Options
Thanks(0)
Quote Reply
Posted: 03 Jul 2015 at 9:45pm |
|
could be some issues inside, but first, make sure it isn't sucking air in the supply side of the fuel system.
|
|
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
|
|
Auntwayne
Orange Level
Joined: 23 Apr 2011
Location: Edwardsville Il
Points: 1589
|
Post Options
Thanks(0)
Quote Reply
Posted: 03 Jul 2015 at 10:43pm |
|
You need to start at the beginning of the fuel system , the tank . Not in the middle .
|
|
JPG AUSTRALIA
Orange Level
Joined: 13 Sep 2009
Points: 767
|
Post Options
Thanks(0)
Quote Reply
Posted: 04 Jul 2015 at 12:29am |
|
ed is the most knowledgable person on pumps here,but I would get someone to watch the fuel pump while you move the throttle, I remember years ago my7060 behaved like that and was slow to rev up and come back and it was the throttle /deacelarator linkage needing a lube. Throttle lever wasn't moving the fuel arm properly.The other thing about the idle is make sure the stop lever on the other side of the pump is getting opened properly by the stop button, sounds like its half closed.HTH
|
|
Adam Stratton
Orange Level Access
Joined: 11 Sep 2009
Location: SW MO
Points: 1363
|
Post Options
Thanks(0)
Quote Reply
Posted: 04 Jul 2015 at 8:35am |
|
One of the friction discs on the throttle of our 7580 broke the other day. If you held the foot feed down, you could raise the rpms, but the lever didnt do anything. I would probably run a pretty stout mix of whatever fuel treatment/snake oil you prefer, and see if that helped before you took off the pump, but you might be headed that direction.
|
|
critter
Silver Level Access
Joined: 13 Nov 2013
Location: Ohio
Points: 254
|
Post Options
Thanks(0)
Quote Reply
Posted: 05 Jul 2015 at 6:22pm |
|
Thanks for the replies, the cable and linkage do fully move on the throttle and the shut off, I don't feel any soft spots on the fuel hose so I am pretty sure it's not sucking shut.
Started the tractor yesterday when it fired up it reved to 1500 then down to 1000 and you cant speed it up or slow it down. I think its time for a pump rebuild.
Edited by critter - 05 Jul 2015 at 6:23pm
|
|
injpumpEd
Orange Level Access
Joined: 13 Sep 2009
Location: Walnut IL
Points: 5097
|
Post Options
Thanks(0)
Quote Reply
Posted: 06 Jul 2015 at 7:25am |
|
it sounds like the metering valve is sticking. Probably all gooped up with old fuel.
|
|
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
|
|
SteveM C/IL
Orange Level Access
Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8635
|
Post Options
Thanks(0)
Quote Reply
Posted: 06 Jul 2015 at 8:53am |
|
Been setting with biodiesel?
|
|
critter
Silver Level Access
Joined: 13 Nov 2013
Location: Ohio
Points: 254
|
Post Options
Thanks(0)
Quote Reply
Posted: 06 Jul 2015 at 11:13am |
|
It sat for 2 years but I have put 300-400 hours on it since, don't know if the previous owners used biodiesel or not but we don't.
|
|
injpumpEd
Orange Level Access
Joined: 13 Sep 2009
Location: Walnut IL
Points: 5097
|
Post Options
Thanks(0)
Quote Reply
Posted: 06 Jul 2015 at 11:34am |
|
If it had sat, then it is gummed up causing problems. You're actually lucky it even ran at all. I've seen so many times with today's fuel, and tractors sitting for a year or two, not good!
|
|
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
|
|
Lonn
Orange Level
Joined: 16 Sep 2009
Location: Назарово,Russia
Points: 29817
|
Post Options
Thanks(0)
Quote Reply
Posted: 06 Jul 2015 at 1:48pm |
|
My combine sat from may 2012 to August 2012 and it gummed up bad enough to ruin the pump. Biofuel really blows.
|
|
-- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... -
Wink
I am a Russian Bot
|
|
