743 kubota diesel running fluffy

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16100

Member
Joined
Dec 25, 2017
Messages
8
I changed glow plugs opened up a fuel line or so in doing that. ive turned the bleeder valve, still fluffy (or rough, weak, lack of power).
the fuel gauge seems to stop reading correctly. whats the easiest correction available?
 

laurencen

Well-known member
Joined
Oct 3, 2016
Messages
234
Iv always bled them at the injectors, loosen the nut on the top 1/4 to half turn let it run till no more air comes out, messy but works for me
 

Tazza

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Staff member
Joined
Dec 7, 2004
Messages
16,840
So, the issue only started once you changed the glow plugs?

If you only cracked fuel lines at the pump or injectors, that really shouldn't have been an issue.

Are you getting any smoke? smoke tells us a lot about what is going on
 

oiu789

Well-known member
Joined
Dec 23, 2017
Messages
152
Did the glow plugs come out all intact? Ie tip not broke off. If the tip broke off it could be stuck in the valve. Do a compression test or leak down test or pull the valve cover and check the valve lash. Let us know what you found on this issue!
 

Markle

Well-known member
Joined
Sep 8, 2020
Messages
85
Not sure we will see closure on this one…it really helps to see final solution/fix. Lack of power, I'm thinking compression has dropped. OP?
 

thwerench

Active member
Joined
May 29, 2022
Messages
43
Years ago I was working on a pick up truck with a diesel in it. Dont remember what I was doing to it but being careful I stuffed a rag into the intake of the turbo to make sure nothing fell in. And I forgot to take it out
Upon initial start up the engine ran terrible. Rough. Shaking. No power. Until it finally ate the rag
I wonder ??
 

oiu789

Well-known member
Joined
Dec 23, 2017
Messages
152
Sounds like you might have air getting into the fuel system. Make sure bleeder valve is closed. Is the primer bulb soft or collapsed? It should get hard with only a squeeze or 2 if there is no air in the system. When you bleed the filter does bubbles come out around the bleed screw? It could bubble at first and then it should stop bubbling and be just solid fuel.
 
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