As compared to the rest of the country, its starting to get cool around here in SO CA. Ehhh....... it 53F outside :p

Anyway, the engine is starting to slightly nail when first started up in the morning. Back out the driveway, pedal slightly down and I can hear a slight nail. It goes away pretty quickly (within a second or two).

My fuel mileage is not as good as my previous 300D. I assume the nailing will over time get worse.

Will a treatment of Diesel Purge clean things out or should I be budgeting for rebuilding the injectors?

Experiences? Suggestions?
Thank you in advance.

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84 300DT Puke Yellow. Totalled after 438,000
84 300DT Orient Red. 169,000 (actual mileage may vary)
2002 Explorer EB (wife's)

Check chain stretch and injection timing before doing injectors -- sounds to me more like late timing that bad injectors. My 220D (12 degrees late) rattled like a coffee can full of marbles for the first half mile.

late timing will give you terrible power and low milage.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!

one cylinder nailing (tap...tap...tap) or more of a all of them rattling (rattle rattle rattle)?
That would be important in deciding what to check
my number 1 injector nails like mad unless I drive 100miles at 85 on the freeway...then its smooth as glass..
I blame the EGR for attacking that cylinder and its pre combustion chamber/injector

I take it Mercedes diesels don't rattle like a japanese diesel. My Isuzu is really noisy when the engine is cold, worse when the air temp is near freezing or below. I hope to find out someday (about Mercedes diesels first hand by owning one).

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1991 GMC Sonoma Ext Cab w/Isuzu diesel (converted March Mar 2003) - sold
1994 S10 Ext Cab w/Isuzu diesel (converted Mar 2008)
1998 Toyota Sienna XLE
B6100HST Kubota CUT DIESEL

1994 S10 with Isuzu diesel and 5spd
http://img.photobucket.com/albums/v6...S15/SigPic.jpg

Chain is less than one degree. The IP has not been timed since I have owned the car. I'll check that prior to proceeding.

__________________
84 300DT Puke Yellow. Totalled after 438,000
84 300DT Orient Red. 169,000 (actual mileage may vary)
2002 Explorer EB (wife's)