I have 30,000 miles on my 2004 DWR 4x4, and It's had the injector knock since about 4000 miles. 2 of the injectors have been replaced, and another is on back order. The dealer will order more than 1 injector at a time. I travel alot with the truck, and can not sit around waiting for injectors so I just drive it until I get a chance to get into the dealer to get it replaced. I was told by the service writer and the "Head Cummins Guy" ( yea right!) that there is no problem driving with the bad injector. The fuel mileage is less since the Knock than it was the first few thousand miles, so I guess that is a problem.
Now to the point of this posting:
I get my oil analyzed at every oil change since new ( I know, a little compulsive). Well here is what I have found.
Since the first analysis, my Aluminum and Potassium seem to be very high. On
my 1996 Cummins, the analysis was way under the universal averages from my first analysis until the last at 235,000 miles with 7,500 to 10,000 miles between changes. This 2004 unit seems very high as listed below.
-------- Universal---------5246 miles--------12976 miles-------19492 Miles
-------- Averages--------Change & ---------Change & ---------Change &
---------------------------Analysis------------Analysis------------Analysis
Aluminum----4--------------7------------------11----------------16
Potassium----1-------------29-----------------67----------------64
All numbers are in Parts per million.
The analysis comments suggest a coolant leak in the upper end which is affecting wear on the pistons.
What I am worried about is internal damage that will not be appearent until after the warranty. The dealer told me that they can not do any checking unless something breaks.
Do these numbers show any concern?
What should I do?
Could the injector knock have any affect that could cause this?
Thanks in advance.
Now to the point of this posting:
I get my oil analyzed at every oil change since new ( I know, a little compulsive). Well here is what I have found.
Since the first analysis, my Aluminum and Potassium seem to be very high. On
my 1996 Cummins, the analysis was way under the universal averages from my first analysis until the last at 235,000 miles with 7,500 to 10,000 miles between changes. This 2004 unit seems very high as listed below.
-------- Universal---------5246 miles--------12976 miles-------19492 Miles
-------- Averages--------Change & ---------Change & ---------Change &
---------------------------Analysis------------Analysis------------Analysis
Aluminum----4--------------7------------------11----------------16
Potassium----1-------------29-----------------67----------------64
All numbers are in Parts per million.
The analysis comments suggest a coolant leak in the upper end which is affecting wear on the pistons.
What I am worried about is internal damage that will not be appearent until after the warranty. The dealer told me that they can not do any checking unless something breaks.
Do these numbers show any concern?
What should I do?
Could the injector knock have any affect that could cause this?
Thanks in advance.
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