Mine was knocking like a jackhammer..louder than the old ones...first I thought it was the Fram filter clogging the oil jets...but it never came back (as loud) after I put some fuel additive in there. Not sure what caused it but it went away and never came back...(knock on wood). Had the Fram oil filter taken off ASAP...and things have been good for the most part...sometimes it's louder than other times but not sure what causes that, but the dealer knows about it so if it blows...I'm covered, I hope. : : ;D

 

BamBam I remember your thread about your knock awhile back and was wondering the other day whatever became of it. Glad to hear the noise went away

Prarie Dog over on TDR had a strange knock in his when it was new but after about 3-4K miles it faded away and hasn't come back (been at least 10K I believe since then).

Vaughn

 

I added the fuel additive and haven't heard it since. It's still a little louder at times but not sounding like a jack hammer. Changed the oil and filter right away.

 

Mine also does this kinda off and on...more so when it's cold outside. I also was a bit concerned about the cooling jets and have dismissed this as being part the "nature of the beast" so to speak. I intend to bring this to the attention of the dealer whenever I finally gather up some more complaints and take it in for servicing....so far so good on the complaints issue (other than the insistant pulling to the right issue).

 

What I have noticed as of late was while cruising down the road with the engine warm & quiet, I will get the old diesel sound from the engine for a few minutes and then go away. Any answers on why this would be happening?

 

I know I would be running a Fleetguard Filter LF 3894 Stratapore on that baby instead of a Fram.

 

No more Fram filters for me...ever....again :-X :-X

 

It is normal for the engine to knock like a gasser pinging when pulling away from idle, It is a combination of rail pressure increasing and pilot injection changing. I am amazed that the dealer would not know this. But of course, how many times have we heard the dealer say "that's normal". After 30K miles I would consider it strange if it didn't make the noise. Happy dieseling.

 

The service managaer says...that the engine will de-fuel when coming off a freeway. So the Knocking is just the fuel rail de-fueling..??? . Not sure they know what they are talking about...its only happened once...if it was that then one would expect it to happen every time...right???

 

I'm on my 3rd tank of fuel using Stanadyne, which has cured the lower rev knocking/pinging, and it also seems to have cured the noticeable ticking sound in the lower gears. I guess the ticking going away could also have been normal break-in. I also just changed the oil for the 3rd time, 1st was Delvac 1300, 2nd was the dealer, and I'm back to Delvac 1300 again, and the engine seems quieter. Now I just hear a bit of what seems like valve train noise when warming up, which I might try to further quieten with a careful valve adjustment.

Anyone else notice the engine getting quiter with an oil change ? Knows what oil Dodge dealers use ?

 

I thought I heard here on this very site that using fuel additives was a NO NO...not sure why. I use them and have not had any problems (yet).... :

 

[quote author=1sttruck link=board=20;threadid=21567;start=15#msg210620 date=1069100852]
I'm on my 3rd tank of fuel using Stanadyne, which has cured the lower rev knocking/pinging, and it also seems to have cured the noticeable ticking sound in the lower gears. I guess the ticking going away could also have been normal break-in. I also just changed the oil for the 3rd time, 1st was Delvac 1300, 2nd was the dealer, and I'm back to Delvac 1300 again, and the engine seems quieter. Now I just hear a bit of what seems like valve train noise when warming up, which I might try to further quieten with a careful valve adjustment.



Anyone else notice the engine getting quiter with an oil change ? Knows what oil Dodge dealers use ?


[/quote]

I performed my first oil change last night and had a slight knock/ticking which was intermittent. I used Delvac 1300 as you have and did notice things were quieter. No ticking whatsoever. I've driven about 50 miles since the change, and still no noise. Probably a bit premature to draw final conclusions, so I would put some more miles to see if this is permanent. I've only got 3500 miles on the truck, so I'm sure things might quiet down on their own as the motor breaks in a but more.

Dan

 

I did some online research before trying a fuel additive and based on what I found I felt comfortable trying some Stanadyne. Stanadyne seemed to do well in a test (advertisment) by Southwest Research Institute, which seems to be a well regarded research and test facility. Stanadyne is also endorsed by Ford (I think that they make the Ford fuel additive), GM, VW, and so forth, unlike other additives.

Fleetguard has some bulletins on fuel additive usage based upon temperature, and it seems that they've also put together an all season product like Stanadyne has, see below. They suggest using one dose for pour point / cold filter plug point reducer when the temperatures are below 32F, and doubling the dose when it gets below 0F, so why not also bebefit from a lubricity and cetane additive too:

The Fleet-tech™ Turbo Diesel All Seasons Fuel Additive is a convenient additive package that will address all major fuel quality concerns in one simple dosing step.
The additive provides the following benefits:
• Pour Point and Cold Filter Plugging Point Suppression
• Fuel Line Freeze-Up Prevention
• Corrosion Inhibition
• Fuel Economy and Power Optimization
• Fuel Injector Cleaner (meets Cummins L10 Spec.)
• Fuel filter Life Extension
• Cetane Booster to Reduce Hard Starts and Engine Noise
• Lubricity Enhancement
How Does the Fleet-tech™ Turbo Diesel All Seasons Fuel Additive Work? One pint of the additive will treat between 30 and 50 gallons of fuel. [part number listed was LT15210].

 

The U.S. has some of the worst Diesel in the world, no question about it. Try a bottle of Stanadyne and see how it plays out. At least get the C's up a little with an additive and see if it quiets things down a bit.

Diesel is a byproduct of gasoline, and we know AZ has their problems in that department, so I can't argure with the bad fuel logic. Also, the best place to buy fuel is a truck stop that sells a lot of fuel. Chances for contamination or old fuel is much lower, regardless of the brand. Your local mom and pop gas station may only fill the diesel tank a couple of times a year. That same thing can be said of the big guys who sell diesel in an area with lower demand.

Also, if you continue to have problems, take the truck to a Cummins Shop and have them take a look at it, or find a dealer that sells a lot of the CTD's. Going to your average Dodge/Chrysler/Jeep dealer, they work on a lot of everything else but your CTD.