Bled the fuel system, still can't get it to start.

procraftmike

Member

Equipment
1977 B7100DT w/B219 FEL
Jan 27, 2016
277
10
18
Neenah, WI
I replaced the fuel filter on my B7100 today. I installed the new filter, left the filter canister a little loose, opened the fuel valve until fuel started coming out the canister, then tightened it down. Tractor started right up but sputtered and died 30 seconds later.

I figure I still have air in the lines yet. I opened the bleeder at the top of the filter until fuel started running out, then I loosened the bleeder at the injection pump until fuel came out, then opened the lines at the 3 injectors. I still have tiny bubbles coming out of the 3 injector lines, but I have cranked and cranked on this thing. I did have a time where it almost started about 6 times, now I am back to cranking and it won't even try to start again.

I certainly believe I have turned this over enough times to bleed the air out. The battery is about dead on it now. I have the charger on it now.

What am I missing here? Thanks!!!
 

85Hokie

Moderator
Staff member
Lifetime Member

Equipment
BX-25D ,PTB. Under Armor, '90&'92-B7100HST's, '06 BX1850 FEL
Jul 13, 2013
10,791
2,601
113
Bedford - VA
Mike,

Get that battery charged up and hit those injectors again - let em bubble some more......

I got my fingers crossed! It will purrrrrrrr!:)
 

procraftmike

Member

Equipment
1977 B7100DT w/B219 FEL
Jan 27, 2016
277
10
18
Neenah, WI
Bled them one last time, it started up, acted like it was going to die a few times, then it cleared up and purrs like a kitten again.

Is there anything to make this easier next time, so I don't have to bleed the lines so much to get it started? Maybe a procedure in a specific order?
 

Daren Todd

Well-known member
Lifetime Member

Equipment
Massey Ferguson 1825E, Kubota Z121S, Box blade, Rotary Cutter
May 18, 2014
10,253
6,835
113
Vilonia, Arkansas
I think you may not have had all the air out of the system when you started it. It's pretty easy to do.

First service I did on mine, I had the same issue.

Second time I left the bleeder open on the injection pump for a little longer and didn't have to bleed the air from the ip to the injectors.


Sent from my iPhone using Tapatalk
 

85Hokie

Moderator
Staff member
Lifetime Member

Equipment
BX-25D ,PTB. Under Armor, '90&'92-B7100HST's, '06 BX1850 FEL
Jul 13, 2013
10,791
2,601
113
Bedford - VA
Bled them one last time, it started up, acted like it was going to die a few times, then it cleared up and purrs like a kitten again.

Is there anything to make this easier next time, so I don't have to bleed the lines so much to get it started? Maybe a procedure in a specific order?
See that finger cross thing-ma-bobber did it!!!!

glad you got her running!!!!:)
 

Bulldog

Well-known member

Equipment
M 9000 DTC, L 3000 DT
Mar 30, 2010
5,440
78
48
Rocky Face, Georgia
On my old 7100 when I did the filter I would loosen the line that goes to the injector pump then turn the engine over. When fuel shot out, tighten the line down and fire it up. Had that tractor for 15 or so years and never once had to bleed injector lines and never had problems with it starting after service or running out of fuel a few times.