Dodge Cummins 5.9L - 215,000 total - 14,000 Mobil Delvac 1300S

[wwillson]

This UOA looks much better after replacing the lift pump. Fuel in the 200k UOA was 4%.

code:

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215k 200k 185k 170k 158k 145k



Aluminum 11 12 21 6 7 3

Chromium 2 2 2 2 3 2

Iron 34 39 43 26 41 34

Copper 2 2 4 2 3 4

Lead 6 12 15 5 7 1

Tin 2 1 1 3 4 1

Moly 4 6 10 30 46 2

Nickel 0 0 0 1 0 0

Manganese 0 0 1 0 0 0

Silver 0 1 2 1 0 0

Titanium 0 0 0 0 0 0

Potassium 23 42 85 4 4 0

Boron 1 2 6 21 31 0

Silicon 4 5 11 5 6 2

Sodium 1 1 3 0 3 4

Calcium 3765 3123 3497 3391 3226 2780

Magnesium 12 26 68 357 464 15

Phosphorus 1320 1166 1202 1381 1326 895

Zinc 1575 1423 1523 1693 1710 1037

Barium 0 0 1 0 0 0



SUS Vis 68.1

Flash Point 415

Fuel
Antifreeze ?

Water 0

Insolubles 0.2

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[Bio-T]

You are really getting a trend on this truck. I am really surprised that you went 14K on this run knowing you had fuel dilution. Also I am sure Terry is looking at the Potassium numbers. Trending down, but is the leak still there? Just curious.

 

[wwillson]

59,

"I am really surprised that you went 14K on this run knowing you had fuel dilution."

So am I! Sometimes I just can't make my brother listen.... We'll watch the potassium levels.

Wayne

 

[md_lucky_13]

If you continue to have a problem, you may still consider getting the injectors at least cleaned..

Injectors on the common rails are a known weak spot if you use pressure boxes, but can also just plain wear out.

Do you use any fuel additives? I personally use power service every time I add fuel. Maybe a few good rinses with their fuel injector cleaner might do, otherwise it might be time to have the injectors pull and professionally cleaned.

Just replacing the lift pump shouldn't make much of a difference... Glad it worked, just confused why?