OT: Compact Tractor diesel compression test
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Lead Driver
Joined: Jun 2013
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From: north of Minneapolis, MN
Lead Driver
Joined: Jun 2004
Posts: 6,340
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From: Amarillo, TEXAS!
If it was me, I might try getting a pry bar between the pump fittings to kind of jam them against each other so they don't turn, then take one line at a time off completely. From what you've posted so far, I kind of have a feeling it's going to end up being a valvetrain issue . . .
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Lead Driver
Joined: Jun 2013
Posts: 5,647
Likes: 891
From: north of Minneapolis, MN
I have tried the method you have suggested. ..they are tight. But I will get after it again.
I tried to gain access to the GP's ....no dice until I remove the intake, which needs the lines off prior.
I tried to gain access to the GP's ....no dice until I remove the intake, which needs the lines off prior.
Lead Driver
Joined: Jun 2004
Posts: 6,340
Likes: 588
From: Amarillo, TEXAS!
Is there enough room to get a flare nut wrench on the line fitting? I know those fittings tend to be "sticky," for lack of a better word. I've found that getting a wrench on it and giving it a sharp rap with a hammer is usually effective.
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Lead Driver
Joined: Jun 2013
Posts: 5,647
Likes: 891
From: north of Minneapolis, MN
I wedged some tools between the fittings, got them off.
So, I didn't have a proper GP adaptor for the Harbor Frieght compression tester. Lacked a oring seal, I will make a proper adapter but I did get some rough numbers.
1) ~400
2) ~400
3) ~380
4) ~360
5) ~360
Kubota gives a compression range of 400-440, with a low limit of 315, and max variance between cylinders of 45. I'm sure the numbers will get better with good tools.
It appears that this is going to turnout to be a fuel issue.
I'm going to adjust the valves and perform another compression test with a new GP adapter.
So, I didn't have a proper GP adaptor for the Harbor Frieght compression tester. Lacked a oring seal, I will make a proper adapter but I did get some rough numbers.
1) ~400
2) ~400
3) ~380
4) ~360
5) ~360
Kubota gives a compression range of 400-440, with a low limit of 315, and max variance between cylinders of 45. I'm sure the numbers will get better with good tools.
It appears that this is going to turnout to be a fuel issue.
I'm going to adjust the valves and perform another compression test with a new GP adapter.
Thread Starter
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Lead Driver
Joined: Jun 2013
Posts: 5,647
Likes: 891
From: north of Minneapolis, MN
The pump and the injectors are going to the service shop for a rebuild anyway.
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Thread Starter
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Lead Driver
Joined: Jun 2013
Posts: 5,647
Likes: 891
From: north of Minneapolis, MN
I set the valves, did a compression test. Although stone cold room temp, the results were nearly the same, high of 390, low of 370.
Now how the get the pencil style injectors out...they are stuck tight, I imagine with carbon. I've looked at the attachments that fit on a slide hammer, (and the Kubota WSM shows the same) I guess I'll fab something up.
Now how the get the pencil style injectors out...they are stuck tight, I imagine with carbon. I've looked at the attachments that fit on a slide hammer, (and the Kubota WSM shows the same) I guess I'll fab something up.
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Lead Driver
Joined: Jun 2013
Posts: 5,647
Likes: 891
From: north of Minneapolis, MN
I made a gadget to remove the injectors. They gave it up pretty quickly. So tomorrow the injectors and pump go to the service shop. Now to find someone to go through the starter.
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Lead Driver
Joined: Jun 2013
Posts: 5,647
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From: north of Minneapolis, MN
Update.
Injection service shop called. Good news I guess. The 5 injectors check out fine, but two of the five injection ports on the pump don't build any pressure. I gave him the OK to fix it. Now I guess I wait.
Injection service shop called. Good news I guess. The 5 injectors check out fine, but two of the five injection ports on the pump don't build any pressure. I gave him the OK to fix it. Now I guess I wait.
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Lead Driver
Joined: Jun 2013
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Likes: 891
From: north of Minneapolis, MN
Trying to locate someone that can work on it....a replacement panel is ~$1000.