Use the following starting procedures on electronic fuel injection 6.5L diesel engines. 1. Have all passengers fasten their seat belts. 2. Apply the parking brake. 3. For automatic transmissions, do the following: • Shift the transmission to P range (vehicle not moving) or N range (vehicle moving). For manual transmissions: • Shift the transmission to… Read More »
The 6.5L V8 diesel engine consists of the following major component groups (figure 1-3): • Mechanical System • Lubrication System • Cooling System • Accessory Drive System • Air Induction/Exhaust Systems • Fuel System • Electrical System Each of these systems was covered in detail in the prerequisite “6.5 Liter V8 Turbo Diesel Engine” training… Read More »
The 6.5L EFI V8 diesel is derived from the same block as the non-EFI 6.5L engine. All 6.5L engines share the following attributes: • a four-stroke cycle • a compression ratio of 21.3:1 • eight cylinders, each with a bore measurement of 103 mm (4.055 in) and piston stroke of 97 mm (3.818 in) •… Read More »
The 6.5L EFIV8 diesel engine has a seven-character identification code stamped on the upper surface of the cylinder case near the #1 cylinder intake manifold runner (figure 1 -2). The stamping contains a broadcast code that describes the engine configuration of the vehicle and a digital code that describes vehicle manufacturing information. The fuel injection… Read More »
The focus of this booklet and its related two-day course is electronic fuel system operation and diagnosis on the 6.5L EFI V8 diesel engine (figure 1 -1). This course is intended for technicians who have diesel engine mechanical experience, but who may be less familiar with electronic engine management systems and “Scan” tool diagnostics. Because… Read More »
In the 1992 model year, General Motors introduced a 6.5-Liter V8 diesel engine, RPO code L65, for light-duty trucks with Gross Vehicle Weight Ratings (GVWR) between 8,500 and 15,000 pounds. Among its many features, this engine was outfitted with a camshaft-driven mechanical fuel pump that delivered metered fuel to the engine’s eight injection nozzles. Forthe… Read More »