Fuel

Bleeding the Fuel System To bleed the system, first make sure you have at least 5 gallons of fuel in the tank, do not trust the gauge. Then locate the bleed bolt on the top of the fuel filter housing and loosen it. Now locate the primer on the lift pump. Pump the Primer on the lift pump until bubble free air comes out of the bleed bolt. This may take

Checking For Air In Your Fuel There are many ways to check for air in your fuel, in this article I’ll name off the more common ones. Loosening Bleed Bolt method Then locate the bleed bolt on the top of the fuel filter housing and loosen it a couple turns. Now locate the primer on the lift pump. Pump the Primer on the lift pump

94-98 12 Valve Cummins not Starting. In this article we’ll troubleshoot the mighty Cummins not wanting to breathe life. I’m going to assume that the engine is cranking over like it should, but isn’t firing.  If you are having issues with the engine not cranking over, please wait patiently for me to write a “Starting System Diagnostics” article, Thank you.   Things to check:

Finding & Fixing your air leak. So you found out that you have an air leak somewhere.  In this article we’ll find it. In addition to this article, this is also a good read. Joe G's Fuel System Write-up The air leak can be anywhere from inside the fuel tank, to the lift pump.   Finding the Air Leak If the leak is large enough, it may drip

How to Adjust your Idle RPM Big thanks to: Illflem, and Rumbus528 on youtube.   Adjusting the idle speed on the diesel engine is not difficult. The adjustment is located on the driver side of the injector pump near the rear of the pump. You will need a 10 mm wrench. Correct speed is: 1994-1998 with AT - in drive with AC on 750 -800 RPM 1994-1

Injector Disassembly, Cleaning & Inspection  Cleanliness is very important, any dirt or debris that get inside the injector will wear on the tight tolerance parts.   Injector Diagram: Torque Specs 15mm Nozzle Retaining Nut - 22 ftlb's 10mm Injector Bleed-off bolt - 6 ftlb's 24mm Injector Retaining Nut - 44 ftlb's Things we'll need. 19MM Open end wrench (For Pop Tester). 15MM Open end/box end wrench (For Injector Disassembly an

How to remove injectors on a 12 valve Cummins.   Clean area thoroughly. Remove 10mm bolts holding down intake horn, oil tube, injector lines, grid heater, and injector return line. Remove injector lines (19mm). Remove injector return line 10mm banjo bolts. Remove injector return line 12mm banjo bolt at fuel filter. Remove injector return line. Loosen Injector hold down nuts. Remove injectors.

94-98 12 Valve Cummins Low Power, Sputtering, White Smoke. In this article we’ll troubleshoot low power, or the engine just not running right. If the engine doesn’t want to start at all, go here: Engine Not Starting   Is it normal? If you start the engine, and immediately floor it, it will get to about 2000 RPM, and then pop, sputter, white smoke, and RPM won't clim

How to pin time your pump from ground zero with a dial indicator. If you're using a dial indicator, you'll need the plunger lift charts, I've supplied them at the bottum of the article!  One's metric and the other is inches, otherwise they're identical. OK, well first things first is you'll need to find #1 TDC.  TDC (Top Dead Center) is where #1 piston is at the absolute top of it's stroke.  We also need to make sure that's it's the compre