I put my fuel pump on today but I have some pressure issues. It starts out about 7 pounds at idle, 16 pounds at 1500 RPM, 18 pounds at about 2000 RPM. I took my wife down to a body shop to drop her car off, about 3 miles round trip. By the time I got back to the house it was at 3 pounds at idle, 7 pounds at 1500 RPM. I bled the air/water from my filter (Stock filter) nothing changed except this time I took it around the block and it was back to 3 PSI.

Can someone help me out on how to fix this, do I need to tweak the spring in the regulator? I called DTT at 4 PM west coast time but didn't get an answer. They must have gone home early. I need to fix this quick as I am down to one car.

 

Wow that sounds mind boggling! I dont even know what to say....

 

That pump runs low at idle and should increase with RPM's . You can adjust it, it has a regulator on it to adjust the pressure. Idle pressure should be no lower then 5PSI.






Diesel Transmission Technology - DTT Performance Diesel Transmission and Power Accessories

 

I figured it out. I am getting some debris in the regulator from the install. I have cleaned the spring actuated regulator out twice tonight.

I need to figure out what I can do in the long term. I was thinking about a small can type filter between the pump and tank for a while.