Engine Description: Notes
WARNING: This page is about a different car, the 2003 Ford RV Cutaway, 2003 Ford Econoline, 2003 Ford E550 Super Duty, 2003 Ford E450 Super Duty, and 2003 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The 7.3L diesel engine is:
- A four-cycle turbocharged V8 with overhead valves.
- 7.3 liter (444 cubic inch) displacement.
- Separated into two banks, the right bank numbered 1, 3, 5, 7 and the left bank numbered 2, 4, 6, 8.
- Rated at 215 horsepower at 3000 rpm.
The cylinder block (6010) has been designed to withstand the loads of diesel operations by using:
- Four-bolt main bearing caps.
- Internal piston cooling oil jets (6C327).
- A forged steel crankshaft (6303).
- Heavy-duty forged steel connecting rods (6200).
The piston is:
- Made of aluminum alloy.
- Fitted with an upper keystone compression ring.
- Fitted with a lower rectangular compression ring.
- Fitted with oil control rings.
The piston pins (6135) are:
- A free-floating type permitting the piston pin to move/float freely in the piston pin bore.
- Retained in the piston and rings by piston pin retainers (6140).
The camshaft (6250) is:
- Supported by five insert-type camshaft bearings (6A251).
- Driven by the crankshaft through the use of the crankshaft gear and the camshaft gear.
The hydraulic valve tappets (6500):
- Minimize engine noise.
- Maintain zero valve lash.
- Incorporate camshaft follower guides.
- Incorporate a roller follower design that reduces camshaft wear.
The cylinder heads (6049) are designed:
- To incorporate electronically controlled/hydraulically actuated fuel injectors (9F593).
- To locate the fuel injectors in the center of the combustion chambers between the rocker arms (6564).
- With integral high-pressure oil galleries.
The glow plug system is:
- Designed to preheat the cylinders for faster cold weather starts.
- Controlled by the powertrain control module (PCM) (12A650).
- Mounted directly into the cylinder heads.
- Activated by the glow plug control module (12B533).
The manifold intake air heater:
- Is designed to preheat intake air to reduce smoke and odor during cold weather starts.
- Is controlled by the powertrain control module (PCM).
- Is mounted into the compressor manifold to heat intake air.
The optional block heater (6A051) is:
- Designed to heat the engine coolant and oil for improved cold weather starts.
- Located near the oil filter (6731) in the oil cooler (6A642).
- Powered by a 120-volt external power source.
- Not repairable; a new block heater must be installed.
The fuel injection system used on the engine:
- Is controlled by the powertrain control module.
- Utilizes an electric in-line fuel pump (9350).
- Circulates through a combination fuel filter, fuel heater and water separator assembly.
- Uses eight electronically controlled/hydraulically actuated fuel injectors.
- Maintains operating pressures between 448-482 kPa (65-70 psi).
The engine lubrication system:
- Is divided into two systems: the low-pressure system lubricates the engine (6007), the high-pressure system actuates the fuel injectors.
- Maintains pressures between 69-414 kPa (10-60 psi) for the low-pressure system and 2,758-20,685 kPa (400-3,000 psi) for the high-pressure system.
- Is cooled by an engine oil cooler.
- In the high-pressure system uses an injection control pressure (ICP) sensor (9F838) and injection pressure regulator (IPR) valve (7A139) to maintain and control pressure.
- Actuates the exhaust back-pressure warm-up system integral to the turbocharger.
- In the high-pressure system is used to inject fuel.