I installed a new fuel system i.e. Erics full Big Line kit but when attempting to bleed the air it took all my strength with a 19 mm wrench (big wrench) and I could not get any of them to loosen. I had to bleed the main feed to the injection pump and it fired right up.

 

Now if/ when I need to loosen an injection line in the future it seems the 19mm nut will strip before loosening. It had to be the dealer that installed the in tank pump and new VP44 that over tightened them. Any tricks out there before I strip a nut or ruin a high pressure line?

 

Thanks in advance.

Edited April 7, 20178 yr by JAG1

@Me78569 or @Mopar1973Man can one of you guys move this to the correct section??

 

I would just try to use a different face, or get an line wrench to tighten and loosen them. 

Sorry if I did get this in the wrong forum section.

 

I bought a set of in line wrenches but did not see they skipped the 19mm in the set until this happened.

 

So you think it won't do damage the h/p line?

If you don't need to touch them yet, don't. Rounding one off is a bad idea. 

19mm and 3/4 are the same, and that's probably why they skipped it. I'd try to find a 3/4 line wrench if they're that tight.  

Actually purging air out of Erics 1/2 inch big line kit at the VP44 was easier than doing the injection lines. I did not think it would properly prime the system but it fired right up.

 

It's key that you not overtighten the big line kit at the factory filter nor the VP. Just lightly snug and then more if they leak.

I've got a 3/4" plumbing wrench that is awesome for thing like that but rarely does it fit where you need it to because of it a 6 sided wrench.

Edited April 7, 20178 yr by Mopar1973Man

A crows foot is a good investment. Saved me more than once.

 

https://www.grainger.com/product/12A311?gclid=CK-fiJ2Dk9MCFYuKaQod72YDmQ&cm_mmc=PPC:GOOGLEPLAA-_-Hand Tools-_-Sockets and Bits-_-12A311&AL!2966!3!166596453554!!!g!82128471717!&s_kwcid=AL!2966!3!166596453554!!!g!82128471717!&ef_id=WKMvJAAAAFPZqhME:20170407185748:s

thanks for the link. That helps reaffirm what I needed.

 

I tell ya those pressure line nuts are on so tight that when I get gutsy and really put force behind it, you can feel it springing back

Nothing against the one that is linked but I got a set of 5 or 6 different sizes for about half of what the one cost thru Northern Tool I believe. Nothing against the pricier one though. I bet I have used mine a total of twice in four years. 

Nothing wrong with cheaper tools. HFT or NT are both good sources. Eventually I need to get a set of crows feet for my tool box.

4 hours ago, Mopar1973Man said:

Nothing wrong with cheaper tools. HFT or NT are both good sources. Eventually I need to get a set of crows feet for my tool box.

 

The other day I needed to take an intake manifold off a Volvo and one of the 10mm bolt heads is partway behind a

thermostat housing.  The distance between the manifold and the housing is about .30".  A Snap-on 10mm crows foot is to thick to fit and would have to be ground down.  Harbor Freight's 10mm crows foot was .27" thick and came in a  seven piece set for $10. 

On 4/7/2017 at 10:19 PM, dripley said:

Nothing against the one that is linked but I got a set of 5 or 6 different sizes for about half of what the one cost thru Northern Tool I believe. Nothing against the pricier one though. I bet I have used mine a total of twice in four years. 

 

Was just the first one that popped up with the "line" wrench end. The others do not work as well and like to spread I've found.