| “This site contains affiliate links for which OEMDTC may be compensated” |
| General Service Bulletin (GSB): | 6.7L Diesel Fuel System Service Tips |
| This GSB targets the diagnosis, inspection and repair of the 6.7L diesel fuel system. | Some 6.7L diesel vehicles may experience drivability concerns due to fuel system failures. Fuel system failures and/or metal debris are most commonly caused by fuel system contamination. |
| NOTE: This information is not intended to replace or supersede any warranty, parts and service policy, Work Shop Manual (WSM) procedures or technical training or wiring diagram information. | |
A Guide to Properly Diagnose Contamination and Repair Diesel Fuel Systems
NOTICE: This GSB should be utilized whenever the PC/ED leads you to check for fuel contamination, metal debris from the high pressure fuel pump or results in direction to replace the High Pressure (HP) Fuel Injection Pump.
Fuel contamination on a 6.7L diesel engine can damage fuel system components including the High Pressure (HP) fuel injection pump and fuel injectors. Engine operation on fuels and additives that do not meet the lubrication, cooling and anticorrosion properties required by the HP fuel system components may cause symptoms including, but not limited to, the following:
- Crank No Start
- Long Crank/Hard Start
- Runs Rough
- Reduced Power
- Engine Knocking
- Exhaust Smoke
- Fuel Rail Pressure (FRP) slow to build
NOTICE: Failure to follow these procedures may result in fuel system and/or engine damage and may require vehicle warranty cancellation submission.
Repairs required due to the use of improper fluids and fuel are not covered by the New Vehicle Limited Warranty, Extended Service Plan (ESP), or Service Part Warranty (SPW). Refer to Warranty and Policy Manual and Customer Information Guide for details.
NOTE: The most common sources of fuel contamination are:
- Vehicle-mounted auxiliary fuel tanks
- Lack of filter maintenance/unapproved filters
- Lack of WIF draining maintenance
- Municipal/Fleet storage tanks
- Infrequently used fuel sources
- Refueling errors (DEF or gasoline introduced into the fuel tank)
NOTE: The best course of action to avoid fuel system concerns is to ensure the vehicle is only fueled from sources with a known quality of diesel fuel verified to be free of water and other contaminants.
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SaleBestseller No. 1
Hot Shot's Secret Everyday Diesel Treatment 16 Ounce Squeeze Bottle (HSSEDT16ZS)
- Take Care Of Your Engine With An Every-Tank Solution For Better Performance And Health
- Boosts Cetane Up To 7 Points For Better Fuel Economy And Maintenance
- Adds Lubricity To Protect Fuel System Including Pump And Injectors
- Prevents Rust And Corrosion, Disperses Moisture And Adds Stability To Fuel
Bestseller No. 2
Power Service Diesel Kleen + Centane Boost 64oz Bottle (6 Pack)
- Cleans dirty injectors and prevents injector sticking in both High Pressure Common Rail (HPCR) and older systems
- Boosts cetane up to 6 numbers – engines run smoother with less power lag and faster cold starts
- Effective in all diesel fuels, including ULSD, biodiesel and biodiesel blends
- Fit type: Universal
- Part number: 3064-06
Bestseller No. 3
Archoil AR6500 Diesel Treatment (40.6 oz) - Treats 400 Gallons - Additive for All Diesel Vehicles
- 40.6 oz bottle treats 400 gallons - Use at every fill-up
- Formulated to address issues with modern diesel fuels
- Incorporates Archoil's proven combustion modifier technology and a strong cetane boost to increase power and response
- Cleans, lubricates and protects your fuel system (including HPCR systems)
- Increases fuel economy (MPG)
SaleBestseller No. 4
Hot Shot's Secret Diesel Extreme, 1 Qt (Packaging May Vary) (P040432Z) Amber, 32 Fluid Ounce
- Cleans Fuel System – Deeply cleans any diesel engine’s fuel system including injectors, cylinders, fuel lines, tank, and tank in one fuel treatment lasting up to 6,000 miles
- Cleans Fuel Injectors – Safely removes and prevents Internal Diesel Injector Deposits (IDIDs), External Diesel Injector Deposits (EDID’s) and other forms of varnish and deposits
- Boosts Cetane – Increases cetane by up to 7 points after the fuel system is fully cleaned, for an even more effective boost in combustion, fuel economy, and engine power while reducing DPF regens
- Increases Mileage – Maximizes your MPG's and helps you save at the pump by improving engine performance and fuel combustion, so you can get the most out of your diesel fuel
- Stabilizes and Prevents Rust, Disperses Moisture – Keeps diesel “healthy” using a military grade non-alcohol-based water dispersant plus rust and corrosion inhibitors
Bestseller No. 5
Performance Formula One Shot 8oz, Case of 24 Bottles Treats 30 gallons Diesel Fuel per Bottle
- Restores/Increase Horsepower: detergents clean deposits in the injection system
- Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent
- Cetane Improver improves combustion resulting in better engine starting, running and reduced noise
- Reduces Wear: Lubricity improvers restore lubricity to ultra low sulfur diesel fuels
- Reduces Emissions reduces Smoke and Particulates
Bestseller No. 6
4 Bottles of Stanadyne 38564 Performance Formula 8 oz Diesel Fuel Additive
- Restores/Increase Horsepower: detergents clean deposits in the injection system
- Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent
- Cetane Improver improves combustion resulting in better engine starting, running and reduced noise
- Reduces Wear: Lubricity improvers restore lubricity to ultra low sulfur diesel fuels
- Reduces Emissions reduces Smoke and Particulates
Bestseller No. 7
Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40.6 oz) + AR6400-D Diesel Fuel System Cleaner
- Includes AR6500 Diesel Treatment (40 oz)
- Includes AR6400-D Diesel Fuel System Cleaner
- Restore key fuel system components - injectors, turbo & dpf
- Boost cetane, improve performance and MPG
- AR6400-D is not the remedy for HEUI injector stiction. Please use AR9100 Friction Modifier instead
Bestseller No. 8
Power Service Diesel Kleen+Cetane Boost 12 oz., Pack of 9
- Cleans dirty injectors and prevents injector sticking in both High Pressure Common Rail (HPCR) and older systems
- Removes both internal and external deposits on fuel injectors
- Restores lost power and fuel economy
- Contains Slickdiesel Lubricator to protect fuel pumps and injectors from increased wear caused by poor quality Ultra Low Sulfur Diesel (ULSD) fuel
- Effective in all diesel fuels, including ULSD, biodiesel and biodiesel blends
Bestseller No. 9
Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12
- Restores/Increase Horsepower: detergents clean deposits in the injection system
- Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent
- Cetane Improver improves combustion resulting in better engine starting, running and reduced noise
- Reduces Wear: Lubricity improvers restore lubricity to ultra low sulfur diesel fuels
- Reduces Emissions reduces Smoke and Particulates
Bestseller No. 10
Lucas Oil 10013 Fuel Treatment - 1 Gallon
- Cleans and Lubricates Fuel System: The product contains a blend of detergents and additives that help to clean and lubricate the fuel system, including the fuel injectors, carburetor, and combustion chamber.
- Improves Fuel Economy: The product can help to improve fuel economy by removing deposits and contaminants from the fuel system and improving the efficiency of fuel combustion.
- Reduces Emissions: By improving fuel combustion, the product can also help to reduce exhaust emissions, including harmful pollutants such as carbon monoxide and nitrogen oxides.
- Increases Power and Acceleration: The product can also help to increase power and acceleration by improving the flow of fuel through the system and reducing the buildup of deposits that can impede engine performance.
- Neutralizes Low Sulfur Fuel Problems: Lucas Oil 10013 Fuel Treatment contains a blend of detergents and additives that help to neutralize sulfur and other harmful contaminants that may be present in the fuel system. The detergents work to clean the fuel injectors and carburetor, which can become clogged with sulfur deposits over time.
Last update on 2024-04-06 / Affiliate links / Images from Amazon Product Advertising API
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