So I installed my BD Supermax, LBZ CP3, and my Mitusa pump. Went to start and she just cranks. I primed it and primed it over and over and nothing happens. Am I missing something. I programmed the truck after everything was in, but I did try to start it before hooking up the laptop. Not sure what to do. Any help would be greatly appreciated.

 

Are you sure the fuel pressure regulator on the cp3 got pluged in? Any codes? Check to make sure your getting fuel to the cp3. We did a mitusa here on a LB7 and it took along time to get it to prime.
Did you get the mitusa regulator log hooked up right?

 

where should I check at the cp3 if Im getting fuel. I will take a picture of it and post all connects.

 

Right next to the high pressure out let is the inlet of the Cp3. Did you remove the stock fuel filter bowl? If not take to hose off thats going to the pump. It has an arrow on the filter housing that shows the direction of fuel flow. If fuel comes out while cranking than check for codes if you can. Check fuel rail pressure. Is it building any? Did the gear get tightend to the pump?

 

are you talking the high pressure out of the cp3, am i suppose to look at the fuel inlet to the cp3. I did not remove the fuel filter assembly. So take off the hose that supplys fuel to the factory filter assembly from the Mitusa. Are you taking the gear on the mitusa. I unscrewed the plug on the factory filter and when i used the drill to prime it, fuel was pouring out.

 

If you have fuel to the pump and no rail pressure. You either have a bad cp3, loose gear, or a bad fuel pressure regulator. Since you know you have fuel there. Get a scan tool and see if its building rail pressure while cranking.

 

Like Jags said hook up your EFIlive and log fuel rail pressure while cranking and see what kind of pressure you are getting.

 

Well i finally hooked up the computer last night, what i got was 1.6 min and 2.9 avg MPa on the fuel rail pressure. What should it be? Should the desired fuel rail presure be 42?

 

Well i finally hooked up the computer last night, what i got was 1.6 min and 2.9 avg MPa on the fuel rail pressure. What should it be? Should the desired fuel rail presure be 42?

 

Did EFIlive say 42 for desired? I don't have my truck around to check what mine is.