It's interesting what one learns by just doing the job .
1984 300CD
To - day's plan was to do a compression test , removing all five injectors and replacing them with recently pop tested ones and try to check the Injection Pump timing .
I discovered the # 5 injector's nose was soaking wet with Diesel fuel ~ this is (I think) a good thing because I'm still having exhaust smoking and minor spitting of raw fuel droplets out the exhaust , they fly back and splatter the recently washed and waxed Cove and Deck lid , sorely vexing me .
The compression test is fine although not as even as I'd hoped considering this engine was rebuilt about 35,000 miles ago .
#1 420 #
#2 420
#3 380
#4 400
#5 380
I removed the compression tester and cleaned up the oil that dribbled down from the open oil filler (oops) , filled the open injector well then pooled in the # 1 cylinder ~ when you crank the engine sans injectors and a bit of oil drools into one cylinder , it blows out in an impressive fog and spray of tiny droplets that covers every thing under the hood including the sound deadening pad , both front fenders , some of the windshield , the radiator and of course , the hapless fool who's standing over by the battery jumping the starter connections 
. (hey ~ who wants rusty hair ?) .
. (hey ~ who wants rusty hair ?) .I was working from back to front so I decided to do # 1 cylinder last and only after I laboriously cleaned all the oil collected in the threads in the injector well .
I also wisely decided to remove the heat shield because I was concerned oil might be pooled up under it and forcing oil droplets into a compression gauge is a good way to explode it in your (my) face 
.
.Of course , I then decided to remove and clean up all the other heat shields and discovered another important thing :
Although it isn't mentioned anywhere , you're supposed to remove the heat shields _before_ installing the compression tester adapter as it seals by bottoming out and ruining said heat shields .
Oops (again , there's a pattern here I think) .
Did I mention it was beastly hot to - day ? .
There I was : all done and ready to install my five fresh non drooling injectors and go for a nice test drive but no ~ they cannot be installed sans heat shields and there's no place to buy them @ 6PM Saturday afternoon 
.
.So , I worked up a traveling tool bag and rolled out my Motocycle and rode it here to the free WiFi spot , I'll check the local OnLine Junk Yards for Mercedes Diesels and head over to the one with the most of them to - morrow morning as I'm far from any of my other running (THREE more dead ones 10' from my now dead Mercedes) vehicles , buy a bunch more used fuel injectors tp lay with and grab some heat shields.......
But Nate I hear you ask , what about the I.P. timing ? ~ isn't it easier to do when all five injectors are out ? .
Yes Grasshopper , you're quite correct but no matter where I positioned the engine I couldn't get it to make any difference in how many drops dripped out of the timing tool so that's on hold .
At least I should have it running to - morrow on much less smoke and hopefully no more spitting out the exhaust pipe .
After all the used injectors I've bought , you'd think I'd have a bag full of good used , cleaned and ready to go heat shields but for some inexplicable reason I don't know , I didn't grab any .
Stay tuned , more hilarity (?) to come .
Of course , no one close by is available to drive me to the Junk Yard to - morrow so I'll go on my Moto , tool bag hanging on my chest . cane and gloves etc....
Pay attention here and learn from MY mistakes 
.
.-Nate
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Posted by: Nate <vwnate1@yahoo.com>
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