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 […]

Diesel Fault Finding Chart

Symptom Key # symptom 1 Engine Running Hot 2 Poor Transient Response 3 Smoke 4 Engine Lacks Power 5 Black Exhaust Smoke 6 Blue Exhaust Smoke 7 High Oil Consumption 8 Turbocharger Noisy 9 Cyclic Sound From the Turbocharger 10 Oil Leak from Compressor Seal 11 Oil Leak from Turbine Seal   Note: R = […]

Cummins Governor Spring Replacement Aid

Here’s the dust cover that needs to be removed to access the governor springs Once the dust cover is removed you’ll need to turn the motor over till a set of springs is lined up perfectly in the opening … there are 2 sets of springs they are mounted opposite of each other Here’s how […]

Clutch Replacement

TOOLS: Tranny jack 2 or 3 ratchet straps porta power (this will make removing the cross member MUCH eaiser) A bottle jack and a piece of 4×4 will work in a pinch. Drill a hole in the end of the 4×4 to allow the bottle jack shaft to go in the 4×4 a couple of […]

24V Cummins Fueling System Diagram

1998 CTD No Description 1 Fuel Transfer (Lift) Pump 2 Fuel Return Line (to Fuel Tank) 3 Fuel Supply Line (Low Pressure, to Engine) 4 Fuel Heater 5 Water-in-Fuel (WIF) Sensor 6 Fuel Filter / Water Separator 7 IAT Sensor 8 Map (Boost) Sensor 9 Fuel Drain Manifold 10 CKP Sensor 11 CMP Sensor 12 […]

BHAF – Big Honking Air Filter

BHAF = Big Honking Air Filter This is a very easy mod and the benefits are great … Cooler Egts … Better flow … More Whistle !!! First remove the air intake line running from your factory Air box to your Turbo Then remove your air box … just pull straight up This area it […]

Anti-Freeze Replacement

From Steve St.Laurent : Here’s how I did mine and I got approximately 5.5 gallons into the system, first I opened the petcock on the radiator (turn it, then pull on it a little, turn, pull, turn, pull – until it starts draining), that will drain the fluid out of the overflow bottle, once the […]

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 […]

Vulcan Fittings

This is a comparison between a Vulcan fitting and your stock banjo set up. The Vulcan Fittings are CNC Stainless Steal and are avalible with a tap in them for running a Fuel Pressure gauge. Vulcans Fitting replace The Stock Banjo’s at the following locations : VP44 inlet Fuel Filter Housing Inlet Fuel Filter Housing […]

Stewart Warner B779 Add-On Shift Light Install Sheet

Click the link below for the pdf version of Stewart Warner Add-On Shift Light Install Sheet Stewart Warner Add-On Shift Light Install Sheet [thanks to Stewart Warner used with permission]

Exhaust Stack Gallery

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Mixing Gasoline with Diesel

My wise old mechanic who has worked on Mercedes for years told me that if I put one gallon regular gas to a diesel tankfull after about every four tanks that it would perform essentially the same job as a fuel injector cleaner at a fraction of the cost. I would like to hear a […]

Rotary Axis Supply Pump Installation 24V CTD

[thanks to K-O Engineering] Click the link for the pdf version of the RASP installation manual for the 24V CTD motor. RASP installation manual

On Board Air Tank

It’s always handy to have compressed air with you for filling your flat tires, other people’s flat tires, air horns, blowing mulch or straw out of your bed, the list can go on and on.  I use compressed air mainly for my air horns. I’ve had a 9 gallon air tank in my aluminum bed […]

Automotive Formulas

How To Calculate CFM: Engine size (CID) x maximum RPM / 3456 = CFM CFM @ 100% volumetric efficiency Cylinder volume (displacement): 3.1416 x bore x bore x stroke Compression ratio: Vi ñ V2(Where Vi is total volume of one cylinder and V2 is volume of space above piston at top of stroke) Brake Horsepower […]

Dodge 24V Cummins Lift Pump Replacement

Procedures for a 1999 Ram NOTE: You may be able to improve this but this is exactly what we did and changed two pumps in less that two hours) TOOLS: 17 mm wrench & socket, 10 mm wrench & socket, 7/16 socket, 1/2 inch socket. 1. Lay a non-conducting material over the battery posts (fender […]