Bath for injector parts ? - Page 2 - PeachParts Mercedes-Benz Forum

Stevo · #16 12-11-2003, 10:13 PM

"I thought he said 1/16"

Where did you see that? Anyway a "skosh" is between 1/16 "and 1/8",

the point is,.. you see if its better that way, if not try the other way. Actually my problem turned out to be injectors. Good luck

Steve

BoostnBenz · #17 12-11-2003, 11:36 PM

I searched something about white smoke and seen that post in a thread somewhere.

Stevo · #18 12-12-2003, 10:38 PM

I let them soak in lacquer thinner for about 24 hours. It did a good job. I was amazed at the amount of stuff at the bottom of each can containing an injector in pieces. I dipped the parts in diesel and reassembled them.

BoostnBenz · #19 12-17-2003, 03:25 PM

I used one of those cheap odorless paint thinners for 24hours and it did NOTHING, so at the moment I brought a couple containers of parts in and swapped one to carb cleaner and the other to reactive reducer (stuff used in automotive painting). Maybe the new cleaners will do better? Maybe the heat will make a difference? While I can clean the carbon off the nozzle I can't clean the grooves inside it so it is really upto this stuff to do all that work.

leathermang · #20 12-17-2003, 03:51 PM

LOL... yes,,, I have seen that too.... there is a lot of difference between " mineral spirits" and ' lacquer ' thinner...
one or the other may or may not work on what the other works on.... LOL... how about that for sentence structure.. try diagraming it.... LOL

BoostnBenz · #21 12-17-2003, 06:01 PM

If you want an interesting experiment mix the two. Precipitation forms (white) and it becomes exothermic then the precipitation forms a goo which goes to an almost plastic like form in gobs.

The carb cleaner appears to be working a little bit better right now, I guess I'll go fill up the other two containers with real thinner or carb cleaner. One thing I notice and really appreciate is that my car has 5 injectors, of which two are rebuilds, three are probably stock. Of the two rebuilds both are rusted pretty bad, the other three have nearly nothing. LOL Makes me want to go buy a rebuilt alternator or something....

Oh and I accept no liability if you poke yourself in the eye reading this or do something I say whether humorous or not.

Stevo · #22 12-17-2003, 08:22 PM

"no liability if you poke yourself in the eye reading this "

Well good luc......aaaauuhhhh..

..PAIN ..I just spilled a cup of HOT coffee in my lap while reading YOUR post, you will be hearing from my attorney .

Last spring I bought new tips for about $25.00 ea and then borrowed a pop tester to check them. they were all the same, spot on. I wish I had a pop tester to check the ones I just soaked and cleaned up, they are spares now

BoostnBenz · #23 12-17-2003, 09:48 PM

LOL, I wonder if I still have my legal disclaimer page up on my old site, it was pretty funny. It started off serious and worked its way off....

I was searching for a POP tester as well, a truck shop wanted $65, I found some other place that said around $45 but I don't find that incredibly appealing as I can buy an injector for that price! I thought I found the bosch pop tester on ebay for $50 but it turned out to be for a gasser. It looks just like the diesel version in the factory manual. The ones for sale on ebay are pretty fancy and expensive. I can justify the compression tester I just bought, but a $250-500 POP tester that I'll use a few times isn't worth it.

The injectors didn't really have a problem anyway, however they had about 1/64" of carbon on them. My car needs an italian tune up!!

Stevo · #24 12-18-2003, 12:54 AM

"I wonder if I still have my legal disclaimer "

Sorry, too late for that, think I,m looking at early retirement here.

I would sure pay $45 or $60 for a pop tester but not hundreds. Do they have used stuff like that at truck stops, sounds logical they would.

soypwrd · #25 12-18-2003, 05:43 AM

Quote:

Originally posted by BoostnBenz
My whole fuel system has this black coating on it, inside every line and hose (well that I haven't replaced recently) so I'm expecting at least that much in the injectors.

One thing you might consider is to fuel up with a biodiesel blend, say a B20 (20% biodiesel) to B50. Biodiesel is a strong solvent and will break down the petroleum deposits in the fuel system. Have a spare fuel filter on hand for when the gunk finally clogs the filter. There are some who have claimed that running B100 has actually cleaned a heavily deposited intake on TDIs. I know when I pulled my injectors they where very clean after 25K on B100/B75. Next time I pull them they are going to take a B100 bath.

BoostnBenz · #26 12-18-2003, 10:45 AM

LOL, I guess it was worth a try.

The $65 was a shop pop testing it for me, just seems like a waste for that much. Then they didn't actually know if they had an adapater to fit it either.

Would WVO have any of the same effect or is it just the excess methanol in the biodiesel which cleans stuff off? All of my clear lines have a funky hue in them now so that'd be nice if I could get all of that cleaned out. I wouldn't mind converting to WVO, but all I ever seem to do is think about it and not do it!

Stevo · #27 12-18-2003, 08:24 PM

"The $65 was a shop pop testing it for me"

Oh well.. so much for my fantasy about garage sales at truck stops, Man.. my lawyer is getting more material to work with every minute

Steve

BoostnBenz · #28 12-22-2003, 02:31 PM

I just wanted to share a few more final thoughts with my current experience before this thread goes off into the archives:
1- Rebuilt injectors are crap, only rusted nozzles I had were on the rebuilt injectors (they weren't all replaced at once for some reason or another), take the time to install new nozzles don't just trade them in on somebody's elses crap.
2- Diesel Purge actually does work, I ran diesel purge a little bit before and the insides of the injectors actually appeared quite clean.
3- Carb cleaner works better than lacquer thinner, mineral spirits doesn't work at all for this. If you let it soak for more than a day it'll start rusting and you'll only make more work for yourself.
4- Don't always drive like you're driving Ms. Daisy, diesels love being ran hard if you don't you'll have a carboned up motor like mine is at the moment. Never just redline it unloaded.
5- The injectors may get stuck, rather than using a huge breaker bar get out the impact wrench. My 25" breaker bar didn't want to loosen the 5th injector (I could have pulled harder but I was worried about snapping the injector) so instead I went with the 425ft/lb impact wrench to loosen it, didn't take much effort.

Stevo · #29 12-22-2003, 07:09 PM

Sounds like good advice.....instelling new tips does seem the way to go.

That engine is still noisy so the new injectors (not really new, but pop tested and found to be good) did not cure my problem. Will go back to timing. I am wondering if a problem with pre chambers could be the cause of the extre noise. The engine starts easy, has little T chain stretch, only 165K on it....I dano

TomJ · #30 12-22-2003, 07:59 PM

But..., where in he** do you find just injectors parts like new tips?