Just had my truck analyzed. Was told I need a new fuel pressure regulator and as I suspected injectors. Estimate came back at 5300.00. I have an automotive background (gas) but I am going to try and do this repair. Thanks to all the help on this website, I think I can do it.

Question about the FPR. Can a bad FPR cause the injectors to malfunction? My balance rates were from -0.8 to -4.5. He said 5 of the 8 were out of speck. Also looking up FPRs. I see a lot of people selling Bosch FPR's. Are they good, should I go with genuine Chevy part or is there another brand I should consider?

Thank you

 

It can if its regulating too low of pressure only buy bosh I'd buy injectors from merchant automotive boshs no eBay remans and look into a cat furl filter upgrade to prevent lots of future injector issues

 

Bosh parts on fuel side are OEM same as gm dealer would carry bosh supplied fuel system for the duramax and common rail cummins

 

Bosch is quality and OEM as stated above. And a bad FPR can cause injector damage. Make sure when you replace it, you stick with an LB7 regualtor. A lot of guys will pitch you and LBZ regulator, which you can use, it is just a nightmare for tuning.