SHOULD I REPLACE BOTH BRAKE LINES INSTEAD OF JUST THE DAMAGED ONE?
should,can,may,must - all loaded questions. You are going to be crawling around down there and you are going to be bleeding the brakes anyway ;so,I do them all at once. That doesn't mean you have to.
You would need the right tools and knowledge to do so. I suggest you take the van over to a local brake and muffler shop, and have them replace the lines. The metal line comes on a big spool and they are custom bent and have flared fittings at all connection points, which if not done properly will leak. Brakes are important so leave it to the pros.
Tom - again you catch the flip side. I figured that since he was doing the job that he would know what he was doing and that he was merely asking whether other guys did just the leak or did they go all the way. You may have caught a newbie and given life saving advice, I have to watch assuming knowledge that the asker may not have. I kind of know the newbie that asks the silly question but one that asks a question that could be taken two ways? I may just start every answer from now on with: Have you ever crawled under the car before except to shoo the cat away?
Looking for a Used E-150 in your area?
CarGurus has 125 nationwide E-150 listings starting at $3,000.
Search Ford E-150 Questions
Ford E-150 Experts