Cummins 4BT & Diesel Conversions Forums banner

Discussions Showcase Albums Media Media Comments Tags Marketplace

1-4 of 4 Results
  1. General Discussion
    I just finished getting the 4b in my boat restarted after having sucked air from the fuel tank. This is the second time I've done it in recent years and am surprised at how long it takes to get it to fire after confirming fuel through the high pressure (HP) pump. After the first time sucking...
  2. General Discussion
    After getting air in the fuel lines do I need to bleed all four cylinders, or can I get a start with only bleeding three? Thanks for suffering this totally NOOB question.
  3. General Discussion
    Last year I installed a mid-1980s 4b (NA) Cummins motor in my 32' salmon gillnet boat. I've been running the motor at a steady 2000 rpm and have been burning about 0.8 gallons per hour of #2 diesel. So far I've got about 60 hours on the motor in this boat and I'm comfortable that the motor is...
  4. General Discussion
    Hey all- I've got a marinized 4BT3.9 that I'd like to drop into a boat that I'm working on. The motor has no air filter or filter housing. I'd like something as low as possible as the engine compartment is tight. What are my options? Thanks in advance.
1-4 of 4 Results