View Full Version : ADII 200 Question

10-25-2011, 05:12 PM
I installed an ADII 200 lift pump on my 2004 cummins a while back and just recently got around to installing a fuel pressure gauge. With the pressure regulator at the factory setting i was getting 30psi of fuel pressure. I thought these were supposed to be set between 15-17 psi at the factory. When i adjusted the regulator out as far as it will go i can only get it down to around 23 psi. Just wondering if i have a problem or if this is normal with this big of a lift pump feeding a stock single cp3? The truck runs fine, just not sure if this high of pressure is good for my cp3. Thanks for your time -Jake