Walt,
I recently had issues with efi and conventional fuel hose as well. Stuff was not cheap either. It's concerning to say the least. It was all from napa. Which to this point has been my fallback tried and true.
It was for the pilot system to the "thing that identifies as a ranger" that my son drives... I am running the evil energy lines on it now before we were ready for final fitment...and have had real good luck with those and the summit stuff on several projects the last few years ...... the napa line was only in service since last September...so I was disappointed about that. I actually spent more on the napa line then my evil energy stuff with all of the AN fittings. What a sad state of development we are in.
I took all of the efi line back and some of the conventional and told them they better have somebody figure that shit out... I am not expecting much.
I actually find the ni chrome much more difficult to properly double flare with conventional tools.
It's often too soft and you have to really pay attention. The problem, well....as my tiny little mind sees it anyway.
...it is really overly forgiving and will seal good on a situation that is going to work fail in a short period where conventional line will piss all over to the point you are over torquing and you know you are fawking up.
These days....Here in rust belt central I most often am repairing what look like perfectly good ni chrome lines because this stuff lets inexperienced people think they flared it right. So there is give and take in my experience....
And I am guilty of not following proper etiquette as well.....
I was just adjusting the brakes on the bronco (drums front and rear ) and overlooking the lines front to rear on it and the ranger .... and just realized I totally forgot to make and install the brackets on the hard lines to keep them from work hardening...and I am contemplating putting all new line in now...and was just looking at what was in the garage stock a little bit before I seen this....I went back out and took a picture of what is typical...
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I have been through...probably 12 or 15 rolls of this since 08 or so in automotive brake applications. It is waaaaay better in the salt belt. But not foolproof.
As you can see there is variation.....there is a piece of stick, and some coil. They handle totally different.....all are ni chrome.
I use the block method to straighten it...and it seems to not negatively effect it..overall....best thing for automotive if your paying attention.
In control applications for oil field equipment.....I have run thousands of feet. And quit using it and went back to fighting with stainless steel..... because this stuff will tolerate no abuse comparatively.
Fuel line and brake line are critical. Be informed.