here are my injectors i pullled last night in my 7.3. this is what they look like. what causes them to look rusted and with build up on them? just from being old?






here is the new stuff
<a href="http://s1095.photobucket.com/albums/i463/91dirtydiesel/?action=view&amp;current=newfuel.jpg" target="_blank"><img src="http://i1095.photobucket.com/albums/i463/91dirtydiesel/newfuel.jpg" border="0" alt="Photobucket"></a>

 

If I remember correctly, mine looked somewhat similar. Maybe not as much rust but a little carbon and a little rust - they were 20 years old. Those say BB so I'm guessing they aren't original?

 

replaced once about 150,000mi ago. one of them is a different type. i had one side that was leaking out of the return lines pretty bad and all of those injectors were in ok condition on the outside of them. the ones in the picture is the side where i had no leaks what so ever. So since you had some carbon and rust does that lead to other problems in the future?

 

No poblems with them so far, I just made sure that the injector hole was clean when I put th new ones in. Also make sure no copper washers stuck to the bottom. I would say to torque them to 45ft/lbs. Manual says 35ft/lbs but they might leak with only that and I like 45 better and no leaks so far.

 

How did you clean it out? I tried to shop vac some of the crap out. Seemed to do the job

 

Shop vac, same as you.

 

I got delphi bb from Pensacola coming monday! Can't wait to try em out with the uhaul ip I just got! My ip was stock so should be like a new truck

 

Be happy that your injectors came out to begin with, I've been working on mine all afternoon and only five came out intact - #5 and #6 came apart, #1 is probably gonna do the same tomorrow. I ground the big threads on the upper sections of the and threaded them back in (after pulling the springs and shims out of the bores), and #5 came out fairly easy, but #6 is stuck real good. It makes scary screeching noises when I turn it clockwise, and if I grab it with the channel locks it wiggle a bit, but simply don't wanna let go of the head. Any suggestions on a way to remove the darn thing? All injectors were soaked with PB blaster last night before I started work today, now this one is drowned in PB blaster again and will stay like that overnight again... Is there anything else that I can dump in there that will eat away or at least soften the carbon buildup and help the injector let loose?

And I still have #1 to deal with tomorrow, I really hope it comes out like #5 did and I don't have another #6 mess on my hands...

 

Mine was leaking diesel pretty good so they soaked with diesel for about a week, I used a 1 inch deep socket and just tapped the rachet with a hammer lightly untill they broke loose

 

Since everything above the copper washer is just a void between the head and injector, rust and grime in that area mean little.

Drop a little diesel down arounf the injector, it lays there till it seeps down through the injector threads, and is then trapped above the copper washer.
Heat over time turns it into grease/tar like substance.

If you have carbon or soot in that area, your copper washer was leaking compression.


As for disolving the soot, other than the fact it evaporates so fast, brake clean does a good job cutting it.

PB Blaster does soften it up, but don't really cut it out.

Just remember, when you spray liquids around the injectors, after tehy are all out crank the engine over at least two revolutions before you reinstall the injectors.

 

I was suggested Diesel Kleen and Seafoam, any experience with those as soot/carbon dissolving agents?

 

Either would probably work, brake clean is just faster.

 

What about carb cleaner, it don't evaporate as quick as brake cleaner - will that do?

 

I welded a loop on top of the injector with the threads ground off so I could pry up on it. I had one that still wouldn't come out. A slide hammer did the trick. Just make sure it's threaded into the stuck tip well...

 

The only thing Pblaster has ever proven effective at separating is money from my wallet ( heck, I haven't even been able to get it to perform their famous styrofoam dissolving trick they like to brag about, although, I have no idea what that is supposed to have to do with breaking through rust . What you need is a REAL commercial grade penetrating oil. Get some Aero Kroil and soak those suckers for a day or so and they should come right out