Procedure to Fix Leaking Fuel Line - Special Tool or Wrench Needed?

[halg]

Hello. While flushing and changing radiator hoses, I saw this leak. From the accumulated dirt looks like its been going on a while. No issues from the tractor performance wise. It is not missing or anything.

I've never messed with diesel injector lines before. None of my wrenches fit even my flare wrench. The nuts holding the lines are super close together.

1. Can someone give advice on the procedure to fix a leak like this?
2. Is a special socket or wrench needed?

Thanks for any replies.

Hal

 

[Matt Ellerbee]

Should be a 17mm. Remove the one beside it to tighten.

Zooming in, looks like the line may be cracked? Inspect it to be sure.

 

[JimDeL]

Should be a 17mm. Remove the one beside it to tighten.

Zooming in, looks like the line may be cracked? Inspect it to be sure.

The crack/hole in the line may be clear up by the clamp, since there's evidence of leakage up there.

 

[Russell King]

In more detail on how to do this:
Find the open end wrench size required to fit the line nut.
Find the open end wrench size required to fit the large nut on the pump top.

You will need to remove the lines starting from the end. You will probably have to remove the complete line by taking it loose at the injector also. You may be able to loosen it at the injector and rotate it around out of the way.

If you can hold the larger nut below the line nut while you loo the line nut, that is better and insures that the larger nut doesn’t rotate. If you can’t hold it the draw a mark on the larger nut and the pump so that you can see if it moves.

Since you have the leak, you can just try to tighten that leaking nut. If you have a cracked line you will need to order a replacement line and then replace the one that is leaking. You may want to price out all new lines and just replace them all if not that costly, since you have to remove half of the lines anyway.

Good luck, please report back what you find out was causing the leak.

 

[North Idaho Wolfman]

I would spray it off with brake parts cleaner, and then look for a leak / wear spot, here:

 

[halg]

Great info thanks everyone. I'll have a closer look tomorrow and try to determine if there is a crack or not. I suspect there is one. It seems pretty unlikely to me that things got loose somehow and just tightening it will fix the problem.

I'll inspect closer tomorrow and call around Monday to see about the cost of new lines.

Depending on their cost, I think I agree with Russell that if I am going to take the lines off to inspect & tighten I probably might as well replace if they are suspect.

Thanks again.

-hal