LBZ FUEL LEAK

No worries brother I'm happy to help. Make sure you grease the o rings on the return fittings when you install them so this doesn't happen again if they ever fail.

snowcrazed440 said:

I think what I’m going to try is a large syringe. I’ll attach a small hose to it and force diesel down the return hole flushing any debris from the fittings onto my garage floor. I mean what’s a little more diesel at this point right? 😂

I’ll then install the new lines.

I am struggling to remove the line that goes along the firewall. Just doesn’t want to budge. Can’t even see where it goes.

Been thinking about the issues I’ve had with this truck over the last 16 years and I’d bet 90% of the issues were related to corrosion. I mean it’s crazy. Brake lines rotting out and now the fuel lines doing the same.

Click to expand...

Yes these are notorious for that if you don't under coat them every year. The line at the rear goes from the 7th injector to a t the to the 8th injector to the fuel rail. You will most likely have to remove the glow plug control module,fuel line brackets and the glow plug and injector harness from that location. I wouldn't force anything into the injector. That is asking for trouble. There's no need to flush the lines out if the new kit came with new ones which it should have. Also the first and last injector have the elbow fittings not the t fittings. This is definitely not a fun project which is why you only want to do it once. Oem or metal fittings are the only ones I would go with. The dorman brand from any parts store will fail in short order as I have seen many many times. Hope you get it all squared away!

Well the new lines are in.

sort of. 😂

I lost two retaining clips. No clue as to where they went. Can’t find the part number. I tell you it would be much easier if GM provided parts schematics. What the hell are they trying to hide anyways? So we all don’t go running to RockAuto?

I thought I had all of the plastic out of the injectors but when I went to put in the new fittings they didn’t insert all the way. Because I’m not a full time diesel mechanic I was unfamiliar with injectors so when I looked in the top by taking magnified pictures I didn’t see any plastic. I just saw a rusty cup and diesel.

I’ll be the first to say it’s not easy to remove plastic from an installed injector. But I did it.

Now I still have to reinstall everything that I disassembled to get to everything. Good call on the removal of the glow plug module. Not to say I’d ever want to do it but I had so much stuff disassembled that with a few more things removed I could have changed out the injectors which have always intimidated me. But being an LBZ and not under the valve covers I’d call it doable.