Pre-chamber collar coming out with injector! Help! :(
 

I tried to loosen the #2 injector to replace my nozzle and the pre-chamber collar came loose with the injector....what do I do??:eek::eek::o

Nevermind, the properties of thermal dynamics saved me. I tightened both back down nice and good, then I Sprayed the injector with the "freezer penetrant" then brake cleaner to get it cold, waited a bit, and took it out, and it came loose. WSHEW. :eek:

This was only cylinder 2 of 5, so I hope they don't all have these anomalies....:rolleyes:

Does anyone have a good idea why three of my five cylinders would have a puddle of oil in them when the injector was pulled? :confused: What causes that? I had a puddle of oil on the heat shield washer thing in Cylinders: 1, 2, and 4. 3 and 5 were pretty much dry. I use 5w40 Mobil 1 synthetic, and change it every 5-6k....this time I will be doing an oil analysis....but my "makeup oil" between changes is only 1.5-2qts.....and a lot of that is from it marking its territory....it drips quite a bit, and a lot ends up in the air cleaner from blowby....so burning must be little to nothing. Lately consumption even went down a bit....I only had to add less than half a quart in the past 2,800 miles...

Smoke was minimal before pulling the injectors, and it started and idled smooth, only issue was poor performance, I had to go to work so I didn't quite finish it yet....and it started raining. I have to put the little "injection line clamps" in place on the 1/2/3 lines yet. Then I'll crank it up and see how those bosio's do.

I injured myself more swapping the injectors out today than I did doing the whole driveline project! :dizzy2:

Also, the old Bosch injector nozzles (they were german ones) were SHOT. The needle valves FELL OUT of the nozzle when I took them apart. Very loose fit, and they were rusted, and charred on the tip pretty bad. I am betting the bosio's will run MUCH nicer....we'll see....in about 4 hours when I get home.....

How did you test the pop pressures and balance?

How did the pre chambers look?

I didn't....:D it was running smoothly before, just was a bit low on torque/power compared to my dad's SD, which does have the bosios...and gained all that power by switching to them, so the consensus from what I read in past threads here on the forum, and from what it says on dieselgiant's pictorial....its not necessary. Plus I saved $125. :) Overall I probably could have gotten away with not doing anything to it, but I like to over-maintain. ;)


They all looked fine, all of them had the ball intact....and everything was black in there....and I could see the tip of each glowplug. :D

We'll find out tonight when I get home how well it runs and if I did it right (I sure hope I did....:rolleyes:)

So does anyone know why there'd be oil in the holes where the injectors are screwed in? The car doesn't burn oil, there's no headgasket issues...etc...so I have no clue where it'd come from.

Just because I am paranoid I will be doing an oil analysis this coming change.... :dizzy2:

I'm done! And successful! I finished everything up, cranked for what seemed like forever, and all the sudden it caught and ran smoothly, no sputtering to speak of. I let it idle 5 mins or so....inspected for leaks of any sort, and there are ZERO. Nada. Very very glad about that. At that point I hopped in, noticed how incredibly smooth the idle is, its so subtle at idle you can barely feel it at all! :eek: Put er' in gear, took off up the street at a gentle pace till the engine was fully warmed up....after driving along at 35-40ish for a few miles, I was stopped at a light, and I decided to gun it on green...:D....it was raining also, I completely broke the tires loose, I did not really move at all, just spun for about 5 seconds till I let off the power and tried again! :eek::eek: Incredible! With MICHELIN tires! I could NEVER do that before I changed the nozzles...and believe me I tried....

It has MEGA torque from a standstill, it plows forward like it should. I was amazed. I then went on the freeway, and wound it all the way to 70 in third gear before I shifted. Not only is it smooth and powerful all the way there, it seems to be quieter too! At speed (about 75-77....) it is absolutely smooth and pleasant. Noticeable difference from before.

Overall it wasn't that bad of a job, and it made a tremendous difference in engine performance. The old nozzles were so worn out and messed up that the needle valves FELL OUT of them when I took them out. And a couple had to be pounded out of the injector because they had rusted into it. :dizzy2:

The old injectors probably did that, I bet its not oil but diesel fuel. I suspect that somehow when they are pissing it may cause the wetness under them. I know I had a couple that were wet, but I also had five injectors that were pissing. After getting them sorted out, and driving 10k miles on working injectors, when I pulled them last they were all bone dry.

The only way engine oil can really get in the pre chamber is if the head is cracked.

Now that I think about it, it does make sense, it was just diesel with carbon mixed into it....= black oily liquid. :D The old injectors were in amazingly bad shape, I am surprised it ran as well as it did. :dizzy2: