Here's a breakdown:
* No Separate Lift Pump: The 1989 Ford diesel trucks did not have a separate electric or mechanical lift pump mounted near the fuel tank.
* Integrated Lift Pump: The lift pump was integrated into the injection pump itself.
* How it Works: The injection pump's internal lift pump would draw fuel from the tank and deliver it to the injection pump. This pump was driven by the engine camshaft.
Important Notes:
* Fuel Pressure Issues: If you're experiencing low fuel pressure or problems with the 1989 Ford diesel truck's fuel system, the integrated lift pump within the injection pump could be the culprit.
* Injection Pump Repair: To address issues with the lift pump, you would typically need to repair or replace the injection pump.
* External Lift Pump Installation: Some owners may choose to install an external lift pump to increase fuel pressure or to isolate the injection pump from potential problems.
If you have any further questions or need more information about the 1989 Ford diesel truck's fuel system, feel free to ask!
