LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2007 >> B2300 Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Symptom Troubleshooting - Engine (3 Of 4) >> Symptom Troubleshooting Chart - Engine Mechanical

Symptom Troubleshooting Chart - Engine Mechanical

SYMPTOM TROUBLESHOOTING CHART - ENGINE MECHANICAL

Symptom Troubleshooting Chart - Engine Mechanical
Problem Possible Cause ACTION
  • Difficult Starting
  • Damaged ignition system
 
  • Damaged fuel system
 
  • Damaged starting system
 
  • Damaged charger system/battery
 
  • Burnt valve
  • Replace valve.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Worn piston
  • Replace piston and piston head.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Worn piston rings
  • Replace piston ring.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Worn cylinder
  • Repair or replace cylinder block.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Damaged head gasket
  • Replace head gasket.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
  • Poor Idling
  • Vacuum leaks
 
  • Malfunctioning or damaged ignition system
 
  • Malfunctioning or damaged fuel system
 
  • Damaged valve tappet (2.3L and 4.0L engine)
 
  • Damaged valve tappet guide or lash adjuster (3.0L engine)
  • Improper Valve-to-Valve Seat Contact
  • Repair or replace valve or valve seat
 See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Damaged head gasket
  • Abnormal Combustion
  • Malfunctioning or damaged fuel system
 
  • Malfunctioning or damaged ignition system
 
  • Damaged valve tappet (2.3L and 4.0L engine)
 
  • Damaged valve tappet guide or valve tappet (3.0L engine)
  • Replace valve tappet or lash adjuster.
See HYDRAULIC LASH ADJUSTERS REMOVAL / INSTALLATION - 3.0L .
 
  • Burnt or sticking valve
  • Repair or replace valve.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Weak or broken valve spring
  • Replace valve spring.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Carbon accumulation in combustion chamber
  • Eliminate carbon buildup.
  • Excessive Oil Consumption
  • Leaking oil
  • Repair oil leakage.
 
  • Malfunctioning PCV system
  • Repair or replace the necessary components.
 
  • Worn valve stem seal
  • Replace valve stem seal.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Worn valve stem or valve guide
  • Replace valve stem and valve guide.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Sticking piston rings
 See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Worn piston ring groove
  • Replace piston and piston pin.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Worn piston or cylinder
  • Repair or replace piston or cylinder block.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
  • Engine Noise
  • Leaking exhaust system
  • Repair exhaust leakage.
 
  • Improper drive belt tension.
 See DRIVE BELT INSPECTION - 3.0L for the 3.0L engine.See DRIVE BELT INSPECTION - 4.0L for the 4.0L engine.
 
  • Malfunction generator bearing
 
  • Malfunctioning water pump bearing
 See WATER PUMP REMOVAL / INSTALLATION 3.0L--> for the 3.0L engine.See WATER PUMP REMOVAL / INSTALLATION 4.0L--> for the 4.0L engine.
 
  • Malfunctioning or damaged cooling system
 See COOLING SYSTEM INSPECTION 3.0L--> for the 3.0L engine.See COOLING SYSTEM INSPECTION 4.0L--> for the 4.0L engine.
 
  • Malfunctioning or damaged fuel system
 
  • Loose timing chain/belt
  • Adjust or replace timing chain/belt.
See TIMING CHAIN REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See TIMING CHAIN REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See TIMING CHAIN REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Damaged timing chain tensioner
  • Replace timing chain tensioner.
See TIMING CHAIN REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See TIMING CHAIN REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See TIMING CHAIN REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
  • Excessive Main Bearing Clearance
  • Adjust clearance or replace crankshaft main bearing.
 See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Seized or heat damaged crankshaft main bearing
  • Replace crankshaft main bearing.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3 L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Excessive crankshaft end play
  • Replace thrust bearing or crankshaft.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
  • Excessive Connecting Rod Bearing Clearance
  • Replace connecting rod bearing or connecting rod.
 See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Heat damaged connecting rod bearing
  • Replace connecting rod bearing.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Damaged connecting rod bushing
  • Replace connecting rod bushing.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
  • Worn Cylinder
  • Repair or replace cylinder block.
 See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Worn piston or piston pin
  • Replace piston or piston pin.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Damaged piston rings
  • Replace piston rings.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Bent connecting rod
  • Replace connecting rod.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Malfunctioning valve tappet or lash adjuster
  • Replace valve tappet or lash adjuster.
See VALVE TAPPET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See HYDRAULIC LASH ADJUSTERS REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See VALVE TAPPET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Excessive valve tappet or lash adjuster clearance
  • Adjust clearance or replace valve tappet guide or valve tappet.
See VALVE TAPPET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See HYDRAULIC LASH ADJUSTERS REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See VALVE TAPPET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
  • Broken Valve Spring
  • Replace valve spring
 See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Excessive valve guide clearance
 See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
  • Insufficient Power
  • Malfunctioning or damaged ignition system
 
  • Malfunctioning or damaged fuel system
 
  • Damaged or plugged exhaust system
  • Inspect exhaust system.
 
  • Incorrect tire size
  • See owners manual.
 
  • Dragging brakes
 
  • Slipping transmission
 
  • Malfunctioning valve tappet (2.3L and 4.0L engine)
  • Replace valve tappet or lash adjuster.
See VALVE TAPPET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See VALVE TAPPET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Damaged valve tappet guide or valve tappet (3.0L engine)
 
  • Compression leakage at valve seat
 See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
  • Seized Valve Stem
  • Replace valve stem.
 See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Weak or broken valve spring
  • Replace valve spring.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See the CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Worn or damaged cam
  • Replace camshaft.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Damaged head gasket
  • Replace head gasket.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
 
  • Cracked or distorted cylinder head
  • Replace cylinder head.
See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 2.3L for the 2.3L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 3.0L for the 3.0L engine.See CYLINDER HEAD GASKET REMOVAL / INSTALLATION - 4.0L for the 4.0L engine.
  • Damaged, Worn or Sticking Piston Ring(s)
  • Repair or replace piston ring(s)
 See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
 
  • Worn or damaged piston
  • Replace piston and piston pin.
See ENGINE DISASSEMBLY AND ASSEMBLY - 2.3L for the 2.3L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 3.0L for the 3.0L engine.See the ENGINE DISASSEMBLY/ASSEMBLY - 4.0L for the 4.0L engine.
scientia non olet · About LEMON Manuals