Quote:
Originally Posted by mowoc
Thanks all for the responses.
Once I got a little better understanding I was able to peruse the DIY a bit and figure out some stuff.
I am going to try the old Italian tune up on the injectors to see how that works. I did have a problem earlier where the ALDA got all sooted up and was not working correctly. I think that may have caused some build up as I ran it a bit like that before someone here pointed me in the right direction. From my reading that type of build up can cause the car to smoke a bit.
As for the GP's, I don't know. I found a receipt for a reputable Indy that had both Injectors and GP's out for testing at 146k (I have 181k now). They indicated they were both fine for whatever that is worth.
I also have a block heater, so I really don't rely on the GP's in the winter. I have noticed hard starting sometimes but I don't know if that is all GP related or perhaps a zealous operator.
On the bright side they also did a compression test. It indicated 300 straight across. From my reading that is good. I would kind of expect that given these engines and the fact that this car was pretty well cared for.
I will continue to fuddle my way through this stuff as I really like it. It is sometimes difficult to tell the difference between opinion and fact on this board. There are some fun discussions that I don't really follow as I am no where near as technical although I do understand most of the basics.
Y'all sure do know these cars.
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Trusting an OHM test is a common diagnostic error on glow plugs.
The glow plug is a HIGH temperature heating element = the element can (and does) frequently read OK on an OHM test but is bad/shorted.
The critical factor is electrode resistance at full operating temperature, testing at low ambient is not valid.
Heating to a minimum temperature of 850°C is critical for diesel engine start-up.
Glow plugs run 1000° - 1300°C = up to "2372° Fahrenheit" optimal temperature range.
This is why many members choose to remove the glow plugs, put them in a vice, and manual glow them (often finding bad units that OHM good).
The older Mercedes Benz diesels (pre CDI) have a Pre-combustion Chamber that houses the glow plugs.
Carbon build up on glow plug electrodes acts as an insulating blanket, reducing durability life and making the glow plugs ineffective.
Every time the glow plugs on engines equipped with a pre-combustion chamber are replaced, it should be reamed out to remove any carbon build up.
http://www.wellmanautomotive.com/glowplugs.php
http://www.ngk-dpower.com/en/technik/keramik-gluehkerzen/
Excellent study material.
Glow plugs link thread
All diesel models
http://www.peachparts.com/shopforum/diesel-discussion/137732-glow-plugs-link-thread.html#post1019018
Starter health is important to your diesel!!!
http://www.peachparts.com/shopforum/diesel-discussion/107318-starter-health-important-your-diesel.html#post739798
Cold weather starting links
http://www.peachparts.com/shopforum/diesel-discussion/137674-cold-weather-starting-links.html#post1018529
Other links that may interest you.
Fuel/Water Separator....I SEARCHED!!
Fuel/Water Separator....I SEARCHED!!
Lower than 10 Micron Fuel Filter Mod pics
Lower Micron Fuel Filter Mod
Why do I have vacuum in my diesel tank.....................?
Why do I have vacuum in my diesel tank.....................?
Fuel Tank Light
Fuel Tank Light
Fuel Gauge and Sending Unit threads
Fuel Gauge and Sending Unit threads
Fuel Sender 85 300D- Cleaned (Pics)
Fuel Sender 85 300D- Cleaned (Pics)
MB diesel filtration, how it works.
http://www.peachparts.com/shopforum/diesel-discussion/141211-mb-diesel-filtration-how-works.html#post1055075
fuel filter change
http://www.peachparts.com/shopforum/diesel-discussion/112664-fuel-filter-change-post824006.html
Diesel filters, no tank strainers please.
http://www.peachparts.com/shopforum/diesel-discussion/140349-diesel-filters-no-tank-strainers-please-post1046422.html?posted=1
Primary filter melted by biodiesel?
Primary filter melted by biodiesel?
I'm baffled and at wit's end!?!?!?!?!
I'm baffled and at wit's end!?!?!?!?!
Algae/Fungus fixation...
Algae/Fungus fixation...
Biobor, what is it, why do I need it???
http://www.peachparts.com/shopforum/diesel-discussion/105304-biobor-what-why-do-i-need.html#post723857
Filters, Fungus, Biocide, etc.
http://www.peachparts.com/shopforum/diesel-discussion/115952-filters-fungus-biocide-etc-post823378.html
Algae Clogged Filter Pic StarTron WORKS !
Algae Clogged Filter Pic StarTron WORKS !
Braided fuel lines weep. 1984 300TD turbo
Braided fuel lines weep. 1984 300TD turbo
300SD Fuel Filter Replacement Instructions
300SD Fuel Filter Replacement Instructions
240D fuel tank removal and cleaning
Good for any W123 sedan.
http://www.peachparts.com/shopforum/diesel-discussion/92826-240d-fuel-tank-removal-cleaning-post813925.html
Check out this fuel pickup screen
Check out this fuel pickup screen
W123 Fuel Tank Screen Replacement
W123 Fuel Tank Screen Replacement
Recommended diesel fuel additives?
http://www.peachparts.com/shopforum/diesel-discussion/166888-recommended-diesel-fuel-additives.html#post1298228
fuel additives
http://www.peachparts.com/shopforum/diesel-discussion/32674-fuel-additives.html#post179712
Additives
http://www.peachparts.com/shopforum/diesel-discussion/89658-additives.html#post589420
Diesel Engine Additives (Fuel, Oil, Trans, Brake, etc.)
http://www.peachparts.com/shopforum/diesel-discussion/198602-diesel-engine-additives-fuel-oil-trans-brake-etc.html#post1607735
Why Put Transmission Fluid In Diesel Tank?
http://www.peachparts.com/shopforum/diesel-discussion/51956-why-put-transmission-fluid-diesel-tank.html#post304476
Alternative fuel links (Diesel)
Alternative fuel links (Diesel)
Have a great day.