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Symptom Chart

WARNING: This page is about a different car, the 2002 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE SYMPTOM CHART

Condition Possible Sources Action
  • Difficult Starting
  • Damaged Ignition System.
  • Damaged Fuel System.
  • Damaged Starting System.
  • Damaged Charging System/Battery.
  • Burnt Valve.
  • INSTALL A New Valve.
  • Worn Piston.
  • For 2.3L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Piston & Piston Pin. For 4.0L Engines, INSTALL A New Piston & Connecting Rod Assembly.
  • Worn Piston Rings.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL New Piston Rings.
  • Worn Cylinder.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Cylinder Block.
  • Damaged Head Gasket.
  • INSTALL A New Head Gasket.
  • Damaged Cooling System.
  • Poor Idling
  • Vacuum Leaks.
  • Malfunctioning Or Damaged Ignition System.
  • Malfunctioning Or Damaged Fuel System.
  • 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.
  • Incorrect Valve-To-Valve Seat Contact.
  • REPAIR Or INSTALL A New Valve Or Valve Seat.
  • Damaged Head Gasket.
  • INSTALL A New Head Gasket.
  • Worn Or Damaged Engine Support Brackets.
  • INSTALL New Engine Support Brackets.
  • Worn Or Damaged Engine Support Insulators.
  • INSTALL A New Engine Support Insulator.
  • Worn Or Damaged Transmission Insulator & Retainer.
  • INSTALL A New Transmission Insulator & Retainer.
  • Abnormal Combustion
  • Malfunctioning Or Damaged Fuel System.
  • Malfunctioning Or Damaged Ignition System.
  • Malfunctioning Or Damaged Air Intake System.
  • 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.
  • INSTALL A New Valve Spring.
  • 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 & Valve Guide.
  • Sticking Piston Rings.
  • For 2.3L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL New Piston Rings. For 4.0L engines, Install A New Piston & Connecting Rod Assembly.
  • Worn Piston Ring Groove.
  • For 2.3L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Piston & Piston Pin. For 4.0L Engines, Install A New Piston & Connecting Rod Assembly.
  • Worn Piston Or Cylinder.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Piston Or Cylinder Block.
  • Engine Noise
  • Leaking Exhaust System.
  • REPAIR Exhaust Leakage.
  • Incorrect Drive Belt Tension.
  • Malfunctioning Generator Bearing.
  • Malfunctioning Water Pump Bearing.
  • Malfunctioning Or Damaged Cooling System.
  • Malfunctioning Or Damaged Fuel System.
  • Loose Timing Chain/Belt.
  • ADJUST Or INSTALL A New Timing Chain/Belt.
  • Damaged Timing Chain Tensioner.
  • INSTALL A New Timing Chain Tensioner.
  • Excessive Main Bearing Clearance.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, ADJUST Clearance Or INSTALL A New Crankshaft Main Bearing.
  • Seized Or Heat Damaged Crankshaft Main Bearing.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. CHECK The Cylinder Head Distortion. For 3.0L Engines, INSTALL A New Crankshaft Main Bearing.
  • Excessive Crankshaft End Play.
  • For 2.3L Engines, INSTALL A New Short Block. For 3.0L & 4.0L Engines, INSTALL A New Thrust Bearing Or Crankshaft.
  • Excessive Connecting Rod Bearing Clearance.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Connecting Rod Bearing Or Connecting Rod.
  • Heat Damaged Connecting Rod Bearing.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Connecting Rod Bearing.
  • Damaged Connecting Rod Bushing.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Connecting Rod Bushing.
  • Worn Cylinder.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Connecting Rod Bushing.
  • Worn Piston Or Piston Pin.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Piston Or Piston Pin.
  • Damaged Piston Rings.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL New Piston Rings.
  • Bent Connecting Rod.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Connecting Rod.
  • Malfunctioning Valve Tappet 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.
  • INSTALL A New Valve Spring.
  • Excessive Valve Guide Clearance.
  • ADJUST Clearance Or INSTALL A New Valve Guide & Stem.
  • Insufficient Power
  • Malfunctioning Or Damaged Ignition System.
  • Malfunctioning Or Damaged Fuel System.
  • Malfunctioning Or Damaged Air Intake System.
  • Damaged Or Plugged Exhaust System.
  • INSPECT Exhaust System.
  • Incorrect Tire Size.
  • Dragging Brakes.
  • Slipping Transmission.
  • Malfunctioning Valve Tappet Or Lash Adjuster.
  • INSTALL A New Valve Tappet Or Lash Adjuster.
  • Damaged Valve Tappet Guide Or Valve Tappet.
  • For 2.3L & 3.0L Engines, INSTALL A New Valve Tappet Guide Or Valve Tappet. For 4.0L Engines, INSTALL A New Cylinder Head.
  • Compression Leakage At Valve Seat.
  • For 2.3L & 3.0L REPAIR Or INSTALL A New Valve, Valve Seat Or Cylinder Head. For 4.0L Engines, INSTALL A New Cylinder Head.
  • Seized Valve Stem.
  • For 2.3L & 3.0L Engines, INSTALL A New Valve. For 4.0L Engines, INSTALL A New Cylinder Head.
  • Weak Or Broken Valve Spring.
  • INSTALL a New Valve Spring.
  • Worn Or Damaged Cam.
  • For 2.3L & 3.0L Engines, INSTALL A New Camshaft. For 4.0L Engines, INSTALL A New Cylinder Head.
  • Damaged Head Gasket.
  • INSTALL A New Head Gasket.
  • Cracked Or Distorted Cylinder Head.
  • INSTALL A New Cylinder Head.
  • Damaged, Worn Or Sticking Piston Ring(s).
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, REPAIR Or INSTALL A New Piston Ring(s).
  • Worn Or Damaged Piston.
  • For 2.3L & 4.0L Engines, INSTALL A New Short Block. For 3.0L Engines, INSTALL A New Piston & Piston Pin.
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