Question about replacing fuel lines

[Stainless]

I attempted to make more progress in my project of replacing the original fuel lines with the black SS ones from DPI. One of the original lines has an electrical connection. I don't know what it does and how it comes apart so I can hook it up to the new lines. Here's the new and old lines in question:
41943

41944

Any help or direction is appreciated.

[Bitsyncmaster]

That is the frequency valve (FV) which has to be removed from the old line and installed on your new line.

[Stainless]

What is the procedure for removal from the old line? Do I just cut the old line and use the short rubber hose and clamps that came with the kit to hook it up to the new line?

[Ryan S.]

I believe that is what we did when we replaced fuel lines at our tech day. Stephen and Dave had DPI lines and we just cut the old line and left about an inch and squeezed it into cone shaped metal part. I don't think we used any clamps for that.
You should double check that w Josh to make sure.

[PJ Grady Inc.]

I believe that is what we did when we replaced fuel lines at our tech day. Stephen and Dave had DPI lines and we just cut the old line and left about an inch and squeezed it into cone shaped metal part. I don't think we used any clamps for that.
You should double check that w Josh to make sure.

Yes to the rubber hose but if you didn't use the clamps go back and do so or risk losing your car in a fireball....seriously! If you didn't get any with the kit you still need to find some and pronto. Take your other car to the store though!
Rob

[Ryan S.]

Looks like Stephen put a couple of clamps on it. No fire ball for Stephen
41976

[Stainless]

I finally wrapped up the replacement of the original fuel lines last night. I fixed the small leak in the hard line connection on the bottom of the fuel filter by removing the thread tape and cranking it down as tight as I could. So far so good.

Before:
42020

After:
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I was surprised how hard it was to start the car and keep it running after replacing all the lines. I would start it, it would fire right up, but then die after about 2 seconds. Giving it gas didn't help and only seemed to kill it faster. After several attempts, it finally stayed running, but was idle hunting worse than I had ever seen. After about a minute, it seemed to find its stride. I started shooting video towards the end of the idle hunting, shown in the video below.

I also noticed a small area that looked wet on the top-right side of the fuel distributor, which you can see in this video:

https://www.youtube.com/watch?v=-FWzdRPWam4&feature=youtu.be

I tightened down the three connections on the right just a smidge to see if I could get that to go away, and I think I was successful. I am paranoid about leaking fuel now that I've seen so many threads lately on DeLoreans catching fire, particularly after recent work was done on the fuel system. Any more tips before I take it for a drive?

[Delorean Industries]

Two clamps are supplied with the kit for the frequency valve connection. While this line is only return pressure you must use clamps here. Any fuel leak is a bad fuel leak.

[Stainless]

Oh, and one more thing: I was reassembling everything at night with a work light last night. I couldn't get the air filter assemble to seat properly. Come to find out, I had caught something and ended up breaking it off. That's what I get for not being careful and just wanting to get it put back together so I could go to bed. I don't recall what this thing is called and what function it serves. Is it fine to leave it broken like that, or do I need to replace it?
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[dn010]

Dab some super glue on the end of that and put it back into the rubber plug.


Oh, and one more thing: I was reassembling everything at night with a work light last night. I couldn't get the air filter assemble to seat properly. Come to find out, I had caught something and ended up breaking it off. That's what I get for not being careful and just wanting to get it put back together so I could go to bed. I don't recall what this thing is called and what function it serves. Is it fine to leave it broken like that, or do I need to replace it?
42026

[PJ Grady Inc.]

Oh, and one more thing: I was reassembling everything at night with a work light last night. I couldn't get the air filter assemble to seat properly. Come to find out, I had caught something and ended up breaking it off. That's what I get for not being careful and just wanting to get it put back together so I could go to bed. I don't recall what this thing is called and what function it serves. Is it fine to leave it broken like that, or do I need to replace it?
42026
That is a CO plug tool that you broke free from the rubber. As long as the rubber plug you can see in the picture is still secure then your OK. Don't bother reinserting it in the rubber plug as it will just fall out eventually and could cause some unforeseen issue if it lands in the wrong spot. Murphy's law dictates that it will!
Rob

[Stainless]

That is a CO plug tool that you broke free from the rubber. As long as the rubber plug you can see in the picture is still secure then your OK. Don't bother reinserting it in the rubber plug as it will just fall out eventually and could cause some unforeseen issue if it lands in the wrong spot. Murphy's law dictates that it will!
Rob

Sounds good. The rubber plug is secure, so I'll move on to the next issue causing me to lose sleep at night: the possibility that not all my new fuel lines are 100% leak free. Any additional tips are appreciated.