Engine - 3.0L V6 - VIN U & 2: Other Ford Taurus IV

FUEL PRESSURE RELEASE & FUEL LINE CONNECTIONS

Scheme 242

Scheme 243

1. Remove fuel tank cap to release fuel tank pressure. Using EFI Pressure Gauge (T80L-9974-B), release fuel pressure from pressure relief valve on fuel rail. (Scheme 242)
2. Before disconnecting fuel lines, disconnect negative battery cable. To disconnect fuel lines, remove retaining clip from outside of fuel line coupling.
3. Use Spring Lock Coupling Remover (D87L-9280-A) for 3/8" line, or (D87L-9280-B) for 1/2" line. Install spring lock coupling remover on fuel line coupling so it enters cage opening. (Scheme 243)
4. Push spring lock coupling remover into cage opening to release female fitting from garter spring. Pull couplings apart. Remove spring lock coupling remover.
5. When installing fuel lines, install NEW "O" rings on fuel lines. Use only specified Brown fuel resistant "O" rings. Before installing, lightly coat "O" rings with clean engine oil. Clean fittings and replace garter spring (if necessary).
6. Install female fitting to male fitting and push until garter spring snaps over flared end of female fitting. Ensure lines are locked together and garter spring is over female fitting flared end.
7. Install retaining clip. Ensure horseshoe portion of clip is over coupling. DO NOT install retaining clip over rubber fuel line.

Note. Install Black retaining clip on fuel supply line, and Gray clip on fuel return line.

CMP SYNCHRONIZER

For camshaft position sensor synchronizer removal, installation and alignment procedure, see

1. 2000 REMOVAL, OVERHAUL & INSTALLATION article in ENGINE PERFORMANCE
2. 2001 «REMOVAL, OVERHAUL & INSTALLATION - CARS - GAS»(ref-40675) article in ENGINE PERFORMANCE

CYLINDER HEAD

Note. When valve and/or valve seat are machined, valve clearance is reduced and may cause improper valve operation. Valve lifter must be collapsed and clearance checked. See VALVE CLEARANCE ADJUSTMENT under ADJUSTMENTS.

Check cylinder head warpage at deck surface. Resurface cylinder head if warpage exceeds specification. See CYLINDER HEAD table under ENGINE SPECIFICATIONS.

Valve Springs

1. Inspect valve spring free length and pressure. Replace valve spring if not within specification. See «VALVES & VALVE SPRINGS»(ref-97390-S13616494602001050300000) table under ENGINE SPECIFICATIONS.
2. Measure valve spring installed height from top of spring seat to underside of spring retainer. If installed height is not within specification, replace valve spring. See «VALVES & VALVE SPRINGS»(ref-97390-S13616494602001050300000) table.

Valve Stem Oil Seals

Intake and exhaust valve stem seals are not interchangeable. Intake valve seal contains a Silver band, and exhaust valve contains a Red band around seal.

Valve Guides

1. Ream valve guides for oversize valves if valve stem-to-guide oil clearance exceeds specification. See «CYLINDER HEAD»(ref-97390-S31637142442001050300000) table under ENGINE SPECIFICATIONS. Valves are available in .015" (.38 mm) and .030" (.76 mm) oversize.
2. Bore out valve guides, and fit with a service guide if oversize valves are not available or guide is damaged. Ream valve guides until proper valve stem-to-guide oil clearance exists.

Note. DO NOT ream valve guides from standard to maximum oversize in one step. Ream valve guides to oversize in gradual steps, so valve guides are reamed in relation to valve seat. Grind valve seats when valve guide is reamed or replaced.

Valve Seat

Ensure valve seat angle, seat width and seat runout are within specification. See CYLINDER HEAD table under ENGINE SPECIFICATIONS. Grind valve seats when valve guide is reamed or replaced. Replacement information is not available from manufacturer.

Valves

Ensure head diameter, valve face runout, stem diameter and valve margin are within specification. See VALVES & VALVE SPRINGS table under ENGINE SPECIFICATIONS.

Valve Seat Correction Angles

If valve seat width is too wide after grinding valve seat, use a 60-degree angle stone to remove stock from bottom of seat (to raise seat) or a 30-degree stone to remove stock from top of seat (to lower seat).

Fitting Pistons

1. Standard size pistons are color coded Red, Blue and Yellow on piston dome. Measure piston skirt diameter at 90-degree angle to piston pin, 1.65" (42 mm) from top of piston. Replace piston if piston diameter is not within specification.
2. Measure cylinder bore 1/2" below cylinder block head surface and 1/2" above piston when at bottom of cylinder bore. Use proper piston to obtain correct clearance. See «PISTONS, PINS & RINGS»(ref-97390-S42698227182001050300000) table under ENGINE SPECIFICATIONS.

Scheme 244

Piston Rings

Ensure ring end gap and side clearance are within specification. See PISTONS, PINS & RINGS table under ENGINE SPECIFICATIONS. Ensure piston ring gaps are not aligned.

Rod Bearings

1. Ensure connecting rod and cap have matching identification marks. Ensure bearing oil clearance and side play are within specification. See «CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS»(ref-97390-S32219379882001050300000) and «CONNECTING RODS»(ref-97390-S04011046682001050300000) tables under ENGINE SPECIFICATIONS.
2. If oil clearance exceeds specification, try using a different combination of rod bearings. See «SELECTIVE MAIN & ROD BEARINGS»(ref-97390-S30324064532001050300000) table. Use only bearing combinations listed in table.
3. If oil clearance cannot be adjusted to standard specification with listed bearing combinations, grind crankshaft and use undersize bearings. Rod bearings are available in .010" (.25 mm), .020" (.50 mm) and .030" (.75 mm) undersizes. Tighten connecting rod bearing cap nuts to specification. See «TORQUE SPECIFICATIONS»(ref-97390-S29067385472001050300000) .

Crankshaft & Main Bearings

1. Ensure main bearing caps are numbered for location. Arrow on cap points toward front of engine. Ensure main bearing journals are within specification. See «CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS»(ref-97390-S32219379882001050300000) table under ENGINE SPECIFICATIONS.
2. Position crankshaft on "V" blocks. Using a dial indicator, check crankshaft runout. If runout is not within specification, replace crankshaft. Install crankshaft in block. Check oil clearance using Plastigage method.
3. Check one bearing at a time. If engine is in vehicle, support crankshaft counterweight adjoining bearing being checked. DO NOT position jack under crankshaft pulley. Tighten main bearing cap bolts to specification. See «TORQUE SPECIFICATIONS»(ref-97390-S29067385472001050300000) .
4. If oil clearance exceeds specification, try using a different combination of main bearings. See «SELECTIVE MAIN & ROD BEARINGS»(ref-97390-S30324064532001050300000) table. Use only bearing combinations listed in table.
5. If oil clearance cannot be adjusted to standard specification with listed bearing combinations, grind crankshaft and use oversize bearings. Oversize main bearings are available in .010" (.25 mm), .020" (.50 mm) and .030" (.75 mm). Tighten main bearing cap bolts to specification.

SELECTIVE MAIN & ROD BEARINGS

Thrust Bearing

Thrust bearing is located on main bearing No. 3. Replace bearing if crankshaft end play is not within specification. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table under ENGINE SPECIFICATIONS.

Cylinder Block

1. Using a straightedge and feeler gauge, check for cylinder block deck surface warpage. Machine cylinder block if warpage exceeds specification. See «CYLINDER BLOCK»(ref-97390-S18025642522001050300000) table under ENGINE SPECIFICATIONS. CAUTION: Do not machine more than .010" (.25 mm) of material from original cylinder block head surface.
2. Check cylinder bore diameter, out-of-round, taper and scoring. Cylinder bore is measured 1/2" below cylinder block deck and 1/2" above piston when at bottom of cylinder bore. Cylinder block must be bored if not within specification. See «CYLINDER BLOCK»(ref-97390-S18025642522001050300000) table under ENGINE SPECIFICATIONS.

Oil Pressure

Normal oil pressure is 40-60 psi (2.8-4.2 kg/cm 2 ) at 3000 RPM with engine at normal operating temperature.