That was what the TSB was issued for...
Rotate approx. 30 degrees at a time till it's quieter...
what you're talking about is lash. The CP3 is turned by the cam. It's possible to get gear lash between the CP3 gear and the cam gear. This is not what this thread is about.
FYI ..... direct from the service manual
FUEL INJECTION PUMP TIMING
With the Bosch injection pump, there are no mechanical adjustments needed or necessary to accomplish fuel injection timing. All timing and fuel adjustments are electrically made by the engine mounted Engine Control Module (ECM).
As you can see.... the CP3 is NOT timed so it's not something the factory forgot to do.
Gear lash!!
Not Valve lash!!
TY explained it!!
BUT once again, this is NOT the noise we are hearing.....My truck does have a tapping noise at idle and above probablly because I did a complete build but it doesn't bother me NEAR as much as this timing rattle / clatter / pinging!!!
Please do not tell me what I am talking about. I am talking about the timing or phasing of the CP3 pump to the cam.
I thought that this thread was about a noise, not a certain cause. I am simply offering a suggestion of what might be the cause.
Are you aware that most of the time, the way the factory does something isn't the same way that the service folks would do it? That is appearantly the case with timing the CP3 because as I have said before, the plant times or phases the pump to the cam to reduce noise.
If you continue to say that the factory doesn't time the CP3, please tell me where you get your information, who did you talk to? Because the service manual is just that. A service manual.
Right, I didn't specify "gear" lash because I thought it was understood that we weren't talking about valves.
Hope you get it figured out.*bdh*
Please do not tell me what I am talking about. I am talking about the timing or phasing of the CP3 pump to the cam.
I thought that this thread was about a noise, not a certain cause. I am simply offering a suggestion of what might be the cause.
Are you aware that most of the time, the way the factory does something isn't the same way that the service folks would do it? That is appearantly the case with timing the CP3 because as I have said before, the plant times or phases the pump to the cam to reduce noise.
If you continue to say that the factory doesn't time the CP3, please tell me where you get your information, who did you talk to? Because the service manual is just that. A service manual.
OK if the pump gear is timed with the cam, then this theory would only affect engines that have had the timing cover off and removed the gear. Changing the pump would not affect anything.
Rob
Please do not tell me what I am talking about. I am talking about the timing or phasing of the CP3 pump to the cam.
I thought that this thread was about a noise, not a certain cause. I am simply offering a suggestion of what might be the cause.
Are you aware that most of the time, the way the factory does something isn't the same way that the service folks would do it? That is appearantly the case with timing the CP3 because as I have said before, the plant times or phases the pump to the cam to reduce noise.
If you continue to say that the factory doesn't time the CP3, please tell me where you get your information, who did you talk to? Because the service manual is just that. A service manual.
that's someones guesstimate. Now, if the TSB said this I don't know. We don't have 6.7's though which he said the TSB was for.
I have the same rattle and it is ecm related some how. It also affects my fuel milage, low end, smoke, and ticks loud when at an idle. It started when my truck was bone stock with a quadzilla race module. The extra timing gave me the same rattle, but when I turned it back to stock it was still there only a little quieter. I run into the same thing with the smarty jr. 2 weeks ago I put a new ecm in my truck and all the problems went away. My lowest milage hand calculated was 19.8. One night when I turned my truck off there was a single chime like when a code comes up, but there was no codes. Then my milage went to 16.7 on the next tank after that. The rattle was back, poor low end, smoke. I set the ecm back to stock (unloaded the smarty jr.) and still there just like before. I spent hours yesterday looking for wires that might have bare spots etc., but could find none. The other thing I get is boost in range low codes. Also threw an over boost and boost in range low at the same time. Maybe this is a different animal, but it is starting to become a real pain. I know how it should run, but it does not.
Overboost I understand, but why low boost and it is not all the time. Plus why get an overboost and low boost at the exact same time. Smarty jr. gives fooling ability to 36 psi. Talked to quadzilla about boost fooling for low end and they said the fooler does not do anything for low boost. HTT said they have not had any problems with low boost codes on this turbo with a bone stock truck.
No codes show on a starscan that I could not get with the smarty jr.
The tic at idle is more like a rod knock. Way louder than when it was running right.