Post Your Successful Diesel Mods At Dieseldatabase

Have you completed a successful mod on your diesel truck? and did you take pictures and discovered tips that might help others? Your post is welcome here. All you have to do is register on this site. Then contact us via the the contact form on the ABOUT page (see menu), letting us know you […]

NXD Stacker Nitrous System

SO you're on the fence about the whole Nitrous issue. Well what if there was a product out there that was mild enough for the daily driver, wouldn't break the bank to purchase and easy enough even the most novice shade tree mechanic could install it? Well here ya go – The guys at Nitrous […]

Cummins 12V Idle Adjustment Q&A

Subject: [RTML] Cummins idle speed How do I adjust the idle speed on my Ram diesel? The idle speed seems too high. First, trace the accelerator linkage to the connection on the fuel pump. With the ENGINE OFF have someone floor the accelerator and watch the fuel arm move. The best position I can describe […]

12V Cummins Governor Lever Adjustment

Here is the ins and outs of the secret governor lever adjustment This is a cut away view of the governor of a P7100 pump. Notice how the lever hit the cam plate flush at the very bottom edge. To check your adjustment the throttle lever needs to be moved until the lever just touches […]

A Recommendation for Trailer Pullers

I pull a 27 foot fifth-wheel RV trailer. I’ve had it all over the West. As you know, there is a hill or two out here. In fact just south of my town, Bend, Oregon, there is a grade that slowed my previous truck with this trailer to 45 mph top speed. I’ve always hated […]

SCT Livewire

Since hands down the SCT is the tuner of choice I’ve noticed for hardcore diesel enthusiasts, there have been a lot of threads as of late on the LiveWire. Since it’s a fairly new product I figured I’d put something together to highlight some of its features and hopefully demystify it for everyone. My first […]

Diesel Troubleshooting Chart

Complaint ————-> Probable Cause WillNotStart HardToStart StartsAndStalls DiesOnDeceleration RunsRough LackOfPower BlackSmoke WhiteSmoke Low Cranking Speed X X             Incorrect StartingProcedure X X             Some or All Glow Plugs Bad X X     X     X No Fuel to Cylinders X       […]

Cummins Diesel Fan Belt Replacement

1. Remove the belt by inserting the drive nose of a 3/8″ ratchet into the square hole in the idler pulley. Use the ratchet to unload the idler tension from the belt by rotating the ratchet counterclockwise as viewed from the front of the engine. The best position for the ratchet is almost straight up […]

Detailed Dodge Diesel Oil Change

Supplies: 3 Gallons Oil; Mobil Delvac Super 1300 is what I use, I should probably be using the Synthetic stuff. But I don’t. Oil Filter; My Fleet Guard Filter supply was tapped out so I had to run to advanced auto and get a Purolator… $15 !! The Fleet Guard Filters can be had for […]

Stewart Warner B755 Memory Tachometer Install Sheet

Click the link below for the pdf version of Stewart Warner B755 Memory Tachometer Install Sheet Stewart Warner B755 Memory Tachometer Install Sheet [thanks to Stewart Warner sw-performance.com used with permission]

12V TPS Wiring Diagram

For TPS adjustment, Joe G. suggested using a potentiometer in the ground circuit. I decided to try it and It really gives a much better range of adjustment than elongating holes in the TPS body. Here is a schematic drawing showing how to wire it. Using the above circuit, adjusting the potentiometer adds resistance to […]

Pyro Tap Help

Install Help. Note: Tap Size May Vary [thanks to DIS dieselpage.com used with permission]

12V Cummins Thermostat Replacement

Symptom/Condition: The vehicle may not warm completely, especially in cold ambient temperatures. This condition may be due to a thermostat that is stuck in the partial open position by debris in the cooling system. NOTE: THE COOLING SYSTEM USED ON THE CUMMINS DIESEL ENGINE EQUIPPED VEHICLES PROVIDES THE CAPACITY AND PROTECTION OF THE HIGHER GVWR […]

Bronco Fuel Tank Mod

When I upgraded my Fuel System pick-ups and returns, and try to plumb a balance line between the front and rear tanks. I found out that the Broncos used a single 33 gallon rear mounted tank. With the combined capacity of about 38 gallons using the OEM F-series tanks, I figured I could loose the […]

How to adjust the idle speed on a Dodge Diesel

How do I adjust the idle speed on my Ram diesel? The idle speed seems too high. First, trace the accelerator linkage to the connection on the fuel pump. With the ENGINE OFF have someone floor the accelerator and watch the fuel arm move. The best position I can describe is that it is under […]

Turning Up a P7100 Pump

The steps for turning up a P7100 pump are: 1) Remove your AFC Housing 2) Mod Your Fuel Plate either slide it forward or purchase a cut one 3) Adjust the governor lever to contact the fuel plate 4) Crank the star Wheel Towards the motor 5) Slide The AFC housing all the way forward […]