Removing fuel line from pump to carb, really stuck! Any tips?

[arrkerr]

This is on my 1990 Mercruiser 3.0...

I need to remove my valve cover, and my fuel line from the pump to the carb runs right over the top. Removing the nut attaching the line to the pump was easy enough, but I can't budge the line from the receptacle on the pump. On the carb end I believe the big outside one on the cab side holds still, the smaller one on the fuel line screws in to it. My problem is that I can't budge the darn thing. The pump end has a nut removed but won't come loose, on the carb end I can't budge the nut. I've put an extension on my wrench and it is just starting to round out the nut. Am I turning the wrong one?

Is there any trick here, or did someone just use some ridiculous loctite on these things, or way over-tighten them? I know the manual calls for a bit of loctite 592., but this is crazy.

If worst comes to worse I might just have to cut it off and make a new one. I know they sell fuel lines at the auto stores around here, but the books says they need to be USCG approved (Type A), and I don't know if they are.

Thanks for the help.

 

[JustJason]

Re: Removing fuel line from pump to carb, really stuck! Any tips?

Its righty tighty lefty loosey..... The big nut you see is the seat for the flare on the steel tube. You need the correct flare nut wreches or else 50% of the time you will just round the brass off. Use 2 wrences... 1 on the seat nut to hold it steady and the other on the flare tube nut. If it fights you try to tighten down the small nut just a hair, just enough to get it to move. If you get it to move then slowly and patiently start rocking it back and forth.

 

[Rocky_Road]

Re: Removing fuel line from pump to carb, really stuck! Any tips?

First...and most important...is to get the correct flare nut wrench. These will not round off the nuts.

Then, get a can of CRC Freeze Off, and just follow the directions. A second method is a 50/50 mixture of ATF and acetone. In either case, be sure to allow the solution to soak for a spell...!

Happy boating!

 

[jtybt]

Re: Removing fuel line from pump to carb, really stuck! Any tips?

...and get the flare-nut wrench end just a little off-set and use one hand instead of trying to muscle it with two. You'll actually be putting more direct pressure with one hand.

 

[cr2k]

Re: Removing fuel line from pump to carb, really stuck! Any tips?

I usually loosen the outer nut on the fuel pump and then take the whole fitting from the pump.

on the carb you got to hold the big nut and loosen the small one with a tubing wrench.

 

[fat fanny]

Re: Removing fuel line from pump to carb, really stuck! Any tips?

If it's that tight remove the caeb with the line intact then work all the suggestions the fellas gave it isn't worth snapping thr fitting off the carb.