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Symptom Chart

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.
SYMPTOM CHART

Condition Possible Sources Action
  • Difficult starting
  • Damaged ignition system.
  • Refer to the appropriate Engine article for the procedure. REFER to the appropriate SELF-DIAGNOSTICS article.
  • Damaged fuel system.
  • Refer to the appropriate Engine article for the procedure. REFER to the appropriate SELF-DIAGNOSTICS article.
  • Damaged starting system.
  • Refer to the appropriate Engine article for the procedure. REFER to the appropriate SELF-DIAGNOSTICS article.
  • Damaged charging system/battery.
  • Repair if necessary.
  • Burnt valve.
  • INSTALL a new valve.
  • Worn piston.
  • INSTALL a new piston.
  • Worn piston rings.
  • INSTALL new piston rings.
  • Worn cylinder.
  • REPAIR or INSTALL a new cylinder block.
  • Damaged head gasket.
  • INSTALL a new head gasket.
  • Damaged cooling system.
  • Refer to the appropriate Engine article for the procedure. REFER to the appropriate SELF-DIAGNOSTICS article.
  • Poor idling
  • Vacuum leaks.
  • Refer to the appropriate Engine article for the procedure. REFER to the SELF-DIAGNOSTICS article.
  • Malfunctioning or damaged ignition system.
  • Refer to the appropriate Engine article for the procedure. REFER to the SELF-DIAGNOSTICS article.
  • Malfunctioning or damaged fuel system.
  • Refer to the appropriate Engine article for the procedure. REFER to the SELF-DIAGNOSTICS article.
  • Damaged valve tappet or lash adjuster.
  • INSTALL a new valve tappet or lash adjuster.
  • Damaged valve tappet guide or lash adjuster.
  • INSTALL a new valve tappet guide or valve tappet.
  • Damaged head gasket.
  • REPAIR or INSTALL a new valve or valve seat.
  • Damaged head gasket.
  • INSTALL a new head gasket.
  • Abnormal combustion
  • Malfunctioning or damaged fuel system.
  • Refer to the appropriate Engine article for the procedure. REFER to the appropriate SELF DIAGNOSTICS article.
  • Malfunctioning or damaged ignition system.
  • Refer to the appropriate Engine article for the procedure. REFER to the appropriate SELF DIAGNOSTICS article.
  • Malfunctioning or damaged air intake system.
  • Refer to the appropriate Engine article for the procedure. REFER to the appropriate SELF DIAGNOSTICS article.
  • Damaged valve tappet or lash adjuster.
  • INSTALL a new valve tappet or lash adjuster.
  • Damaged valve tappet guide or valve tappet.
  • INSTALL a new valve tappet guide or valve tappet.
  • Burnt or sticking valve.
  • REPAIR or INSTALL a new valve.
  • Weak or broken valve spring.
  • REPAIR or INSTALL a new valve.
  • Carbon accumulation in combustion chamber.
  • ELIMINATE carbon buildup.
  • Excessive oil consumption
  • Leaking oil.
  • REPAIR oil leakage.
  • Malfunctioning PCV system.
  • REPAIR or INSTALL new necessary components.
  • Worn valve stem seal.
  • INSTALL a new valve stem seal.
  • Worn valve stem or valve guide.
  • INSTALL a new valve and valve guide.
  • Sticking piston rings.
  • REPAIR or INSTALL new piston rings.
  • Worn piston ring groove.
  • INSTALL a new piston and piston pin.
  • Worn piston or cylinder.
  • REPAIR or INSTALL a new piston or cylinder block.
  • Engine noise
  • Leaking exhaust system.
  • REPAIR exhaust leakage.
  • Incorrect drive belt tension.
  • Malfunctioning generator bearing.
  • Refer to the appropriate Battery And Charging System article for the procedure.
  • Malfunctioning water pump bearing.
  • Malfunctioning or damaged cooling system.
  • Malfunctioning or damaged fuel system.
  • Refer to the appropriate Engine article for the procedure. REFER to the appropriate SELF-DIAGNOSTICS article.
  • Loose timing chain/belt (6268).
  • ADJUST or INSTALL a new timing chain/belt.
  • Damaged timing chain tensioner (6L266).
  • INSTALL a new timing chain tensioner.
  • Excessive main bearing clearance.
  • ADJUST clearance or INSTALL a new crankshaft main bearing (6333).
  • Seized or heat damaged crankshaft main bearing.
  • INSTALL a new crankshaft main bearing.
  • Excessive crankshaft end play.
  • INSTALL a new thrust bearing or crankshaft (6303).
  • Excessive connecting rod bearing clearance.
  • INSTALL a new connecting rod bearing or connecting rod (6200).
  • Heat damaged connecting rod bearing (6211).
  • INSTALL a new connecting rod bearing.
  • Damaged connecting rod bushing (6207).
  • INSTALL a new connecting rod bushing.
  • Worn cylinder.
  • REPAIR or INSTALL a new cylinder block (6010).
  • Worn piston (6108) or piston pin (6135).
  • INSTALL a new piston or piston pin.
  • Damaged piston rings.
  • INSTALL new piston rings.
  • Bent connecting rod.
  • INSTALL a new connecting rod.
  • Malfunctioning valve tappet (6500) or lash adjuster.
  • INSTALL a new valve tappet or lash adjuster.
  • Excessive valve tappet or lash adjuster clearance.
  • ADJUST clearance or INSTALL a new valve tappet guide or valve tappet.
  • Broken valve spring (6513).
  • INSTALL a new valve spring.
  • Excessive valve guide clearance.
  • ADJUST clearance or INSTALL a new valve guide (6510) or valve.
  • Insufficient power
  • Malfunctioning or damaged ignition system.
  • Rpair if necessary.
  • Malfunctioning or damaged fuel system.
  • Rpair if necessary.
  • Malfunctioning or damaged air intake system.
  • Repair if necessary.
  • Damaged or plugged exhaust system.
  • INSPECT exhaust system.
  • Incorrect tire size.
  • Dragging brakes.
  • Slipping transmission.
  • Repair if necessary.
  • Malfunctioning valve tappet or lash adjuster.
  • INSTALL a new valve tappet or lash adjuster.
  • Damaged valve tappet guide or valve tappet.
  • INSTALL a new valve tappet guide or valve tappet.
  • Compression leakage at valve seat.
  • REPAIR or INSTALL a new valve, valve seat or cylinder head (6049).
  • Seized valve stem.
  • INSTALL a new valve.
  • Weak or broken valve spring.
  • INSTALL a new valve spring.
  • Worn or damaged camshaft.
  • INSTALL a new camshaft.
  • Damaged head gasket (6051).
  • INSTALL a new head gasket.
  • Cracked or distorted cylinder head.
  • INSTALL a new cylinder head.
  • Worn or damaged piston.
  • INSTALL a new piston and piston pin.
  • Worn or damaged piston.
  • INSTALL a new piston and piston pin.
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