Honda Civic. Manual — part 309

Excessive oil pump clearance

Reduce oil pump

clearance, See

ENGINES

Oil pickup tube or screen blocked

Remove restrictions

Main, rod or cam bearing clearance excessive

Replace bearing to

reduce clearance, See

ENGINES

High Oil Pressure

Improper grade of oil

Replace with proper

oil

Oil pressure relief valve stuck closed

Eliminate binding

Oil pressure sender or gauge faulty

Replace sender or

gauge

Noisy Main Bearings

Inadequate oil supply

Check oil delivery to

main bearings

Excessive main bearing clearance

Replace main

bearings, See

ENGINES

Excessive crankshaft end play

Replace crankshaft,

See ENGINES

Loose flywheel or torque converter

Tighten attaching bolts

Loose or damaged vibration damper

Tighten or replace

vibration damper

Crankshaft journals out-of-round

Re-grind crankshaft

journals

Excessive belt tension

Loosen belt tension

Noisy Connecting Rods

Excessive bearing clearance or missing bearing

Replace bearing, See

ENGINES

Crankshaft rod journal out-of-round

Re-grind crankshaft

journal

Misaligned connecting rod or cap

Remove rod or cap

2008 Honda Civic EX

GENERAL INFORMATION Trouble Shooting - Basic Procedures

and realign

Incorrectly tightened rod bolts

Remove and re-tighten

rod bolts

Noisy Pistons and Rings

Excessive piston-to-bore clearance

Install larger pistons,

See ENGINES

Bore tapered or out-of-round

Rebore block

Piston ring broken

Replace piston rings,

See ENGINES

Piston pin loose or seized

Replace piston pin,

See ENGINES

Connecting rods misaligned

Realign connecting

rods

Ring side clearance too loose or tight

Replace with larger or

smaller rings

Carbon build-up on piston

Remove carbon

Noisy Valve Train

Worn or bent push rods

Replace push rods,

See ENGINES

Worn rocker arms or bridged pivots

Replace push rods,

See ENGINES

Dirt or chips in valve lifters

Remove lifters and

remove dirt/chips

Excessive valve lifter leak-down

Replace valve lifters,

See ENGINES

Valve lifter face worn

Replace valve lifters,

See ENGINES

Broken or cocked valve springs

Replace or reposition

springs

Too much valve stem-to-guide clearance

Replace valve guides,

See ENGINES

Valve bent

Replace valve, See

ENGINES

2008 Honda Civic EX

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Loose rocker arms

Retighten rocker arms,

See ENGINES

Excessive valve seat run-out

Reface valve seats,

See ENGINES

Missing valve lock

Install new valve lock

Excessively worn camshaft lobes

Replace camshaft, See

ENGINES

Plugged valve lifter oil holes

Eliminate restriction

or replace lifter

Faulty valve lifter check ball

Replace lifter check

ball, See ENGINES

Rocker arm nut installed upside down

Remove and reinstall

correctly

Valve lifter incorrect for engine

Remove and replace

valve lifters

Faulty push rod seat or lifter plunger

Replace plunger or

push rod

Noisy Valves

Improper valve lash

Re-adjust valve lash,

See ENGINES

Worn or dirty valve lifters

Clean and/or replace

lifters

Worn valve guides

Replace valve guides,

See ENGINES

Excessive valve seat or face run-out

Reface seats or valve

face

Worn camshaft lobes

Replace camshaft, See

ENGINES

Loose rocker arm studs

Re-tighten rocker arm

studs, See ENGINES

Bent push rods

Replace push rods,

See ENGINES

Broken valve springs

Replace valve springs,

2008 Honda Civic EX

GENERAL INFORMATION Trouble Shooting - Basic Procedures

See ENGINES

Burned,Sticking or Broken Valves

Weak valve springs or warped valves

Replace valves and/or

springs, See

ENGINES

Improper lifter clearance

Re-adjust clearance or

replace lifters

Worn guides or improper guide clearance

Replace valve guides,

See ENGINES

Out-of-round valve seats or improper seat width

Re-grind valve seats

Gum deposits on valve stems, seats or guide

Remove deposits

Improper spark timing

Re-adjust spark timing

Broken Pistons/Rings

Undersize pistons

Replace with larger

pistons, See

ENGINES

Wrong piston rings

Replace with correct

rings, See ENGINES

Out-of-round cylinder bore

Re-bore cylinder bore

Improper connecting rod alignment

Remove and realign

connecting rods

Excessively worn ring grooves

Replace pistons, See

ENGINES

Improperly assembled piston pins

Re-assemble pin-to-

piston, See ENGINES

Insufficient ring gap clearance

Install new rings, See

ENGINES

Engine overheating

Check cooling system

Incorrect ignition timing

Re-adjust ignition

timing, See TUNE-UP

Excessive Exhaust Noise

Leaks at manifold to head, or to pipe

Replace manifold or

pipe gasket

2008 Honda Civic EX

GENERAL INFORMATION Trouble Shooting - Basic Procedures