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Troubleshooting Engine Performance Problems Part 6



Find possible causes of engine problems by the symptoms your car is displaying.
More...
» Part 1: Hesitation...
» Part 2: Hissing...
» Part 3: Tapping...
» Part 4: Rattling...
» Part 5: Smoking...
» Part 6: Overheats...
» Part 7: Fuel Usage...
» Part 8: Smells...
» Part 9: Surges...
» Part 10: Stalls...
 

  • Engine is using more oil than normal. Oil puddles under the car when parked:
    The oil level is low between oil changes. You see puddles of oil under the car. Obviously you have an oil leaks. You may or may not see smoke or smell oil burning when you stop at a light, stop sign. or park the car. You should make sure the engine always has the proper oil level.

    Possible causes:
    1. The PCV system is not working properly: Replace PCV valve. Check and repair PCV system as required.

    2. The engine's gaskets and seals may be damaged: Replace gaskets and seals as required.

    3. Oil filter may not be tightened properly: Tighten or replace oil filter.

    ~~~~~~~~~~

  • Engine quickly overheats:
    Engine runs fine but gets very hot shortly after you start it. This problem usually occurs after only five minutes of running or after traveling about a mile. You may or may not notice steam coming from the hood or smell coolant.

    Possible causes:
    1. Engine coolant level may be very low: Refill coolant to proper level.

    2. Engine's drive belts may be broken or slipping: Tighten or replace belts.

    3. The electric cooling fan may not be coming on: Repair or replace cooling fan. Repair wiring. Replace cooling fan temp sensor.

    4. The ignition timing may be set wrong: Adjust ignition timing.

    5. There may be a vacuum leak: Check and replace vacuum lines as required.

    6. The engine may have mechanical problems: Check compression to determine engine condition.

    7. The engine's thermostat may be stuck closed: Replace thermostat.

    8. There may be a leak in the cooling system: Repair leak and refill coolant.

    9. Cylinder head gasket(s) may be bad: Replace cylinder head gasket(s).

    ~~~~~~~~~~

  • Engine overheats:
    Engine runs fine but gets very hot while driving. This problem usually occurs after moderate to extended periods of driving. You may or may not notice steam coming from the hood or smell coolant.

    Possible causes:
    1. Engine coolant level may be too low: Refill coolant to proper level.

    2. Engine's drive belts may be broken or slipping: Tighten or replace belts.

    3. The electric cooling fan may not be coming on: Repair or replace cooling fan. Repair wiring. Replace cooling fan temp sensor.

    4. The ignition timing may be set wrong: Adjust ignition timing.

    5. There may be a vacuum leak: Check and replace vacuum lines as required.

    6. The engine may have mechanical problems: Check compression to determine engine condition.

    7. There may be a leak in the cooling system: Repair leak and refill coolant.

    8. Cylinder head gasket(s) may be bad: Replace cylinder head gasket(s).

    9. Car is over loaded or driven too hard: Lighten the load and back off the gas.

    10. The radiator or block may be clogged: Reverse flush cooling system and fill with fresh coolant.

    ~~~~~~~~~~

  • Your engine or oil light comes on while driving:
    The oil light may be marked engine. If this is the case, this light and warning system monitors the water temperature of the engine in addition to the oil. If this light stays on regardless of how fast you run the engine, there is a serious problem. Sometimes the light will come on when the engine is idling and go out when the engine's speed is increased. In most cases, this problem becomes more evident as the problem gets worse.

    Possible causes:
    1. The engine has lost oil pressure or has low oil pressure: Oil pump has failed. Stop the engine and have it repaired. (Not a DIY job)

    2. The oil pressure sending unit is bad: Replace sending unit.

    3. The engine is very low on oil: Check and fill oil.

    4. The engine is overheating: Repair cooling system.

    More...
    »
    Part 1       » Part 2       » Part 3       » Part 4
    »
    Part 5       » Part 6       » Part 7       » Part 8
    »
    Part 9       » Part 10
    Additional Information provided courtesy of
    ALLDATAdiy.com and Warranty Direct
    © 2000-2007 Vincent T. Ciulla

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