The purpose of New Product Information is to highlight or indicate
important product changes from the previous model year.
Changes may include one or more of the following items:
| • | A component comparison from the previous year |
| • | Torque values and/or fastener tightening strategies |
| • | Changed engine specifications |
| • | New sealants and/or adhesives |
| • | Disassembly and assembly procedure revisions |
| • | Engine mechanical diagnostic procedure revisions |
| • | New special tools required |
Component Comparison
| • | New Central Multipoint Flexible Injection (MFI) fuel system. |
| • | EGR valve and components are deleted. |
| • | Revised lower intake manifold due to the deletion of the EGR. |
Torque Values and/or Fastener Tightening Strategies
| • | Cylinder head bolts, the crankshaft bearing cap bolts, the connecting
rod bolts, and balance shaft bolt apply a torque angle strategy. |
| | In an on-vehicle situation where a torque angle meter may not
fit into the vehicle packaging, a three step tightening process may be followed
using a torque wrench. |
| • | Certain fasteners should not be reused. Bolts, studs, or other
fasteners that must be replaced will be called out in the specific service
procedure. |
Changed Engine Specifications
| • | Crankshaft Main Bearing Bore Out-of-Round spec is
now 0.05 mm (0.002 in). |
| • | Cylinder Bore Out-of-Round-Production spec
is now 0.017 mm (0.0007 in). |
| • | Cylinder Head Deck Surface Flatness spec is now 0.050-0.152 mm
(0.002-0.006 in). |
| • | Piston Ring-to-Groove Clearance-Second Compression
Ring-Production spec is now 0.076-0.280 mm (0.0030-0.0110 in). |
| • | Piston Ring-to-Groove Clearance-Oil Control
Ring-Service spec is now 0.076-0.200 mm (0.0030-0.0079 in). |
New Sealants and/or Adhesives
No new sealants or adhesives have been added.
Disassembly and Assembly Procedure Revisions
| • | Intake manifold disassembly and assembly has changed due to the
deletion of the EGR and new Central (MFI) fuel system. |
| • | Measuring Connecting Rod Bearing Clearances has changed due to
a tool revision. |
| • | Engine Preluber procedure has been added to this section. |
| • | Discard all used gaskets, seals or O-ring seals unless
otherwise indicated. |
| • | MFI fuel system procedure. |
Engine Mechanical Diagnostic Procedure Revisions
| • | Coolant in Combustion Chamber diagnostic information has been
added. |
| • | Coolant in Engine Oil diagnostic information has been added. |
New Special Tools Required
No new special tools are required.
