The engine technical category is dedicated to technical diesel articles like what diesel fuel is the best and how turbochargers increase diesel performance. Scroll down for more technical articles for the Ford PowerStroke, Ram Cummins, and more diesel engines.
Purpose:To verify that the Fuel Delivery Command Signal (FDCS) system is functioning correctly. Recommended Procedure Connect OBDII Scan Tool to the data link connector (DLC) under the dash. Access FUEL PW PID on NGS Tester and monitor while cranking engine. No fuel command signal when ICP, RPM and VPWR signals are correct usually indicates a loss…
Purpose:To determine if there is enough oil or oil of sufficient quality to operate the injectors. Recommended Procedure: Check oil level with dipstick when vehicle is on level ground. If there is no oil or very little oil in the crankcase, the injectors will not operate. If the oil level on the dipstick is overfull, it…
NOTE: The long term integrity of the charge air cooler system is the responsibility of the vehicle and component manufacturers; however, the following symptoms can be checked by any authorized repair location. Intake Manifold Pressure Check Install pressure gauge, Part No. ST-1273, to the fitting in the turbocharger outlet. Install another pressure gauge, Part No. ST-1273, in…
Flush the CAC internally with solvent in the opposite direction of normal air flow. Shake the CAC and lightly tap on the end tanks with a rubber mallet to dislodge trapped debris. Continue flushing until all debris or oil is removed. CAUTION: Do not use caustic cleaners to clean the CAC. Damage to the CAC will…
CAUTION All air compressors have a small amount of lubricating oil carry over which lubricates the piston rings and moving parts. When this lubricating oil is exposed to normal air compressor operating temperatures over a period of time, the lubricating oil will form varnish or carbon deposits. If the following inspections are not done, the…
As diesel engine owners and technicians we are very concerned with the treatment and protection of our engines. One of the primary concerns is the quality of air that enters the turbo and subsequently the engine. Even very small amounts of dust and dirt can be extremely damaging. Which is the reason for using an…
Often times we get questions about why someone’s well running diesel truck isn’t “rollin’ coal” or making black smoke. The simple answer is, the fact that you are not seeing any black smoke is a good thing. A properly running diesel engine should not have any smoke at all. Black smoke is an indication of restricted…
Often, printed auto repair manuals provide only general information on a range of vehicles. Online auto repair manuals save you time and money …Just by selecting the make, year, model of your vehicle, you will immediately get all the updated information for your specific vehicle. Diagnostic Flow Charts, testing, inspection sections and factory Technical Service Bulletins(TSBs)….
Split injector tips are often caused by dry starts and there is also a theory about water in the fuel causing this. Splitting the injector tips are primarily caused by improper fuel system bleeding after servicing the fuel system, including a filter change or other issues where the injectors stop getting fuel. Because “dry starts” cause…
Warm it up Diesel engines clatter when they are cold. This is because diesel engines rely on the heat generated by compressing air in the cylinders in the engine for the diesel to ignite, with a cold block and cold air, combustion is not very efficient. When you start a diesel engine for the first…
There are several reasons why diesel engines in passenger cars and light trucks haven’t gained as much popularity in the U.S. as in other countries. For the most part it is due to misinformation or ideas based on much older technology. Today’s diesel engines are more efficient, more powerful, more durable, and cleaner running than…
Why Do Diesel Fuel Injectors Fail? There are two major causes of diesel fuel injector failure associated with the properties of the fuel itself: excess wear and deposits. 1) Common Reasons Diesel Injectors Fail: Excessive Wear One mode of injector failure is excess wear. Prior to 2006, diesel fuels in the United States contained relatively…
