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Installation - A&P Auto Parts

Installation Instructions for Remanufactured Engines

At A&P Auto Parts, we provide you with exceptional remanufactured auto parts AND offer you guidance during the installation of your new car part from A&P. Use the step-by-step tips and checks listed here to ensure you install your new remanufactured auto part right the first time. If you aren’t installing the part yourself, provide your mechanic with this handy installation info.

Before Installing Your Remanufactured Engine …

  • Verify the root cause of the original engine failure.
  • Check engine assembly for shipping damage.
  • Verify the engine ordered and the engine received is correct for the application.
  • Read all warning tags and additional information supplied with the engine.
  • Have shop manual available for torque, timing and other factory specifications.

IMPORTANT: Check your existing auto components before beginning installation.

1) Intake manifold must be thoroughly cleaned and free of all debris. Debris such as old piston, piston ring or valve material can be trapped in the intake, plenum, and EGR system. The debris can and will be pulled into the replacement engine causing the replacement engine to fail. DO NOT GLASS BEAD, SAND BLAST OR USE ANY TYPE OF MEDIA THAT COULD GET LODGED IN THE INTAKE.

2) Installer must DIAGNOSE, REPAIR and INSURE proper operation of engine-related systems and subsytems. Here are some parts linked to the engine’s cooling system that are especially important to check:

  • Fan (motor, wiring, relays, switches or clutch)
  • Hoses
  • Thermostat
  • Water Pump
  • Fuel System
  • Volume and pressure
  • Quality – (sugar, water, debris)
  • Injectors
  • Vacuum Hoses
  • Control – PCV & EGR
  • Catalytic converters – (plugged, leaking or restricted)
  • Air induction – (air cleaner and inlet hoses)
  • Electrical/Electronic systems
  • Starting
  • Charging
  • Ignition
  • Computer Controls
  • All associated wiring, relays and sensors

After Installing Your Remanufactured Engine…
1) Check engine for interference. Rotate the crankshaft by hand a minimum of four complete revolutions before engaging the starter. Nuts, bolts, washers or other small parts that may have been dropped into the intake manifold or intake ports can severely damage replacement engine. If engine cannot be rotated by hand, inspect for foreign objects in combustion chamber.

2) Check Oil Pressure. The oil pump on this engine must be primed and the entire oiling system must be purged of air before the drive belts are installed and the engine is started.

  • The preferred method is to use a pressurized system to push clean oil through the entire oiling system.
  • A distributor type engine can be primed with a priming tool and drill motor to rotate the oil pump shaft. The technician must make sure that oil flows to the top of the engine and into the rocker arms.
  • A distributor-less engine should be primed before the drive belt and spark plugs are installed. First, disable the fuel and ignition systems and crank engine in short durations until oil pressure is achieved. Second, crank engine an additional two minutes in short durations to insure the oiling system is purged of air.
  • Check and adjust oil level after priming and purging is complete.
  • Oil coolers need to be replaced and the cooler lines cleaned of all debris.

3) Check Cooling System

  • Fill to manufacturer’s recommended levels.
  • Fill with proper concentration of manufacturer’s recommended coolant.
  • Air bleed (Many late model cooling systems MUST be air bled or overheating will occur).

4) Readjust Valve Lash

  • Engines equipped with adjustable rocker assemblies must be readjusted after engine “run in”.

5) Replace Oil Cooler

IMPORTANT: Oil cooler MUST be replaced. The Technical Department offers the following information concerning the reuse of oil coolers:

  • Some vehicles are originally equipped with oil coolers which are part of the radiator assembly; others may have aftermarket coolers added to the oiling system.
  • Regardless of design, the OIL COOLER MUST BE REPLACED or the remanufactured engine warranty will be void.
  • Small bearing and crankshaft material cannot be entirely removed by simply flushing the cooler. If this is attempted and the original cooler is REUSED, it will contaminate the engine’s oil system, resulting in multiple engine failures.

Any time you’re installing remanufactured auto parts, you need to work methodically and do your best to get it right the first time. If a mistake is made early on, it could mean hours of excess work. If you’re not comfortable with your mechanical skills, contact your local repair shop and ask if they install remanufactured parts. Search around for the shop with the best deal and experience and request their installation services. When you find a qualified engine installer, provide them with the information here.

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