Heavy Equipment Repair Questions? Ask an Expert Now.
Hi Cat Man,
The code recorded is 653.7 the book says this code is "injector fuel flow is lower than expected for number 3" This info is coming out of the engine management book that came witht the new computer.
Side note: the new computer is not working properly or not being allowed to work properly because there is a problem with the eingine? This what the PGL people told me that sold me the new computer.
I pulled the valve cover and inspected the line and harness to the injectors, not sure which cylinder is number 3? Did not see any obvious problems.
Thanks Cat Man,
which is injector 3? do you start from the front of the engine or back, are the one two three in a row or is there a firing order that tells me which is number 3?
Sorry it took me so long to get back toy you, I have not been able to get to the machine to check the advice you gave me, other things taking my attention, should I accept and will I be able to to talk to you some more?
I see oil coming out of the rocker, it looks as if the oil is falling short of the injector, also can you tell me proceedure on how to pull this injector, do I need any special tools?
I do not see any screws holding the injector in?
Thanks for the information.
Here is the procedure to replace the injector. If you have never replaced an injector in a 6.6, there are a few things you need to know.
First, these fuel systems are common rail. This means that all of the fuel pines that you remove in order to replace an injector must be replaced. They are a one-time use. Please do not break the fuel lines loose after installing them and try to bleed the fuel. It is not necessary and is EXTREMELY DAANGEROUS due to the high-pressure fuel that will come out. And lastly, these are software injectors. This means that there is software that must be installed into the engine ECM after installation of the injector. Make sure to write down the serial number and 4 digit confirmation code. In order to program the software, you will need Cat ET software.
http://dl.dropbox.com/u/11922365/Electronic%20Unit%20Injector.pdf << click here