blackhbkid

Engine

1. Engine will not rotate when attempting to start.

Battery terminal connections loose or corroded.
Battery discharged or faulty.
Automatic transmission not completely engaged in park or clutch not compressed.
Broken, loose or disconnected wiring in the starting circuit.
Starter motor pinion jammed in flywheel ring gear.
Ignition switch faulty .
Starter pinion or flywheel teeth worn or broken.

2. Engine rotates but will not start.

Fuel tank empty.
Battery discharged (engine rotates slow.)
Leaking fuel injectors, faulty fuel pump, pressure regulator, etc.
Fuel not reaching fuel rail.
Ignition components damp or damaged.
Worn, faulty or incorrectly gapped spark plugs.
Loose distributor is changing ignition timing.
Broken, loose, or disconnected wires at the ignition coil or faulty coil.

3. Engine hard to start when cold.

Battery discharged or low.
Malfunctioning fuel system.
Injector leak.
Distributor rotor carbon tracked.

4. Engine hard to start when hot.

Air filter clogged.
Fuel not reaching the fuel injection system.
Corroded battery connection, especially ground.

5. Starter motor noisy or excessively rough in engagement.

Pinion or flywheel gear teeth worn or broken.
Starter motor mounting bolts loose or missing.

6. Engine starts but stops immediately.

Loose or faulty electrical connections at distributor, coil or alternator.
Insufficient fuel reaching fuel injectors.
Vacuum leak at the gasket between the intake manifold and throttle body.

7. Oil puddle under engine.

Oil pan gasket and/or oil pan drain bolt washer leaking.
Oil pressure sending unit leaking.
Cylinder head covers leaking.
Engine oil seals leaking.

8. engine lopes while idling or idles erratically.

Vacuum leakage.
Leaking EGR valve.
Air filter clogged.
Fuel pump not delivering sufficient fuel to the fuel injection system.
Leaking head gasket.
Timing belt and or pulleys worn.
Camshaft lobes worn.

9. Engine misses at idle speed.

Spark plugs worn or not gapped properly.
Faulty spark plug wires.
Vacuum leaks.
Incorrect ignition timing.
Uneven or low compression.

10. Engine misses throughout driving speed range.

Fuel filter clogged or impurities in the fuel system.
Low fuel pressure.
Faulty or incorrectly gapped spark plugs.
Incorrect ignition timing.
Cracked distributor cap, disconnected distributor wires or damaged components.
Leaking spark plug wires.
Faulty emission system components.
Low or uneven cylinder compression.
Weak or faulty ignition system.
Vacuum leak in fuel injection system, intake mani, air control valve, or vacuum hoses.

11.Engine stumbles on acceleration.

Spark plugs fouled.
Fuel injection system faulty.
Fuel filter clogged.
Incorrect ignition timing.
Intake manifold air leak.

12. Engine surges while holding accelerator steady.

Intake air leak.
Fuel pump faulty.
Loose fuel injector wire harness connectors.
Defective ECU or information sensor.

13. Engine stalls.

Idle speed incorrect.
Fuel filter clogged and/or water and impurities in the fuel system.
Distributor components damp or damaged.
Faulty emissions system components.
Faulty or incorrectly gapped spark plugs.
Faulty spark plug wired.
Vacuum leak in the fuel injection system, intake manifold or vacuum hoses.
Valve clearances incorrectly set.

14.Engine lacks power.

Incorrect ignition timing.
Excessive play in distributor shaft.
Worn rotor, distributor cap or wires.
Faulty or incorrectly gapped spark plugs.
Fuel injection system out of adjustment or excessively worn.
Faulty coil.
Brakes binding.
Automatic transaxle fluid level incorrect.
Clutch slipping.
Fuel filter clogged and/or impurities in the fuel system.
Emission control system not functioning properly.
Low or uneven cylinder compression.
Obstructed exhaust system.

15. Engine backfires.

Emission control system not functioning properly.
Ignition timing incorrect.
Faulty secondary ignition system.
Fuel injection system malfunctioning.
Vacuum leak at fuel injection, intake manifold, air control valve or vacuum hoses.
Valve clearances incorrectly set and/or valves sticking.

16. Pinging or knocking engine sounds during acceleration or uphill.

Incorrect grade of fuel.
Ignition timing incorrect.
Fuel injection system faulty.
Improper or damaged distributor components.
EGR valve not functioning.
Vacuum leak.

17. Engine runs with oil pressure light on.

Low oil level.
Short in wiring circuit.
Faulty oil pressure sender.
Worn engine bearing and/or oil pump.

18. Engine continues to run after switching off.

Idle speed to high.
Excessive engine operating temperature.
Ignition timing in need of adjustment.


Engine Electrical System

1. Battery will not hold a charge.

Alternator drivebelt defective or not adjusted properly.
Battery electrolyte level low.
Battery terminals loose or corroded.
Alternator not charging properly.
Loose, broken or faulty wiring in the charging circuit.
Short in vehicle wiring.
Internally defective battery.

2. Alternator light fails to go out.

Faulty alternator or charging circuit
Alternator drivebelt defective or out of adjustment.
Alternator voltage regulator inoperative.

3. Alternator light fails to come on when key is turned on.

Warning light bulb defective.
Fault in the printed circuit, dash wiring or bulb holder.



Modified by blackhbkid at 9:40 AM 2/5/2008

crazyguy

this is a nice write up. rep

blackhbkid

thank you

1988_96hb

very nice, i vote sticky.lol

blackhbkid

i will put some more stuff up tomorrow but it snowing like a mad man here so im going to attempt to drive home