Which style of line disconnect tool works best? I've not used any yet.
These: https://www.harborfreight.com/fuel-l...-pc-63595.html
These: https://www.harborfreight.com/3-piec...set-38732.html
Or these: https://www.harborfreight.com/4-piec...fuel+line+tool

 

I use the second option you have a link too, works great for what it is

 

I actually have a set of all those. Some fit in tight spaces and others work with good access.

 

The only things I know I will be using them for in the near future is the front fuel line at the fuel rail and air conditioner lines this summer.

Do the plastic ones work OK on both? Saw someone on YouTube use the white plastic ones and it seemed to be fine, but not sure for the AC lines.

This part of the fuel line to disconnect from the metal lines in and out:

 

I used the second one on my fuel line and used a set like the first one for my ac line. If I remember correctly the second one was too small for the ac line.

 

I used the 3rd set on my 98.

 

Think the plastic one will work for both? A plastic set at Northern Tool looks like it might be built a little better too.

 

I used the type at the first link, cheap set bought at my store, for when doing my radiator to take the lower tranny line off.
So really can't comment on how it would work for fuel.
The one thing I can say is that make sure you get all the crap out of there before you use the tool.
The crap prevents you from getting the tool in as far as you need to.
Fuel line being higher up probably less of an issue though.

 

I did plan on flushing the connections with PB Blaster to clean out as much of anything as possible, and trying to give it a twist before using the tool too.

 

Do yourself a favor and get the metal ones. I have the second link style and they have worked for me for fuel line and transmission line disconnects.

 

OK

From what I read in reviews, I should look closely at them to see that the leading edge is thin to get past the clip inside the fitting.

 

What is going on with the lower connection on the front rubber fuel line? The part connected to the line from the tank.

How does that come off the metal line?

 

^^^^ That part doesnt come apart without destroying the line.

Also, I have all three of the tools you listed. The plastic ones work on most things. The multicolored aluminum ones work great for what they fit in. I have been in a few scenarios where the metal ones just wont fit. But if I remember right, I had to use the metal ones for the AC stuff since they had a spring inside the clip.

 

Does the rubber part come off without destroying the plastic?

Do I have to replace the whole freaking line from rail to filter just to replace that rubber part?

 

I bought these for an engine swap. They worked on A/C, trans cooling lines, and fuel.

Lisle 39400 Angled Disconnect...