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Engine Operation
The Four Stroke Cycle <ul><li>Intake </li></ul><ul><li>Compression </li></ul><ul><li>Power </li></ul><ul><li>Exhaust </li>...
Intake <ul><li>Intake valve opens </li></ul><ul><li>Air fuel mixture enters the cylinder </li></ul><ul><li>Piston moves do...
Compression <ul><li>Piston moves upward </li></ul><ul><li>Intake valve closed </li></ul><ul><li>Air-fuel mixture is compre...
Power <ul><li>Spark plug fires </li></ul><ul><li>Ignition proceeds </li></ul><ul><li>Piston is forced down </li></ul>
Exhaust <ul><li>Exhaust valve opens </li></ul><ul><li>Piston moves upward </li></ul><ul><li>Spent gas pushed into exhaust ...
Diagnosis <ul><li>T hree vital systems to establish a diagnostic routine for the engine. </li></ul><ul><li>Fuel </li></ul>...
Fuel system diagnosis <ul><li>Is there gas in the tank? </li></ul><ul><li>Is there gas to the intake manifold? </li></ul><...
Compression system <ul><li>Is the air filter clean? </li></ul><ul><li>Is the exhaust system flowing? </li></ul><ul><li>Com...
Ignition System <ul><li>Is there spark at the spark plug? </li></ul><ul><li>Is there spark from the coil? </li></ul><ul><l...
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Engine operaion

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Engine operaion

  1. 1. Engine Operation
  2. 2. The Four Stroke Cycle <ul><li>Intake </li></ul><ul><li>Compression </li></ul><ul><li>Power </li></ul><ul><li>Exhaust </li></ul>
  3. 3. Intake <ul><li>Intake valve opens </li></ul><ul><li>Air fuel mixture enters the cylinder </li></ul><ul><li>Piston moves down </li></ul>
  4. 4. Compression <ul><li>Piston moves upward </li></ul><ul><li>Intake valve closed </li></ul><ul><li>Air-fuel mixture is compressed </li></ul>
  5. 5. Power <ul><li>Spark plug fires </li></ul><ul><li>Ignition proceeds </li></ul><ul><li>Piston is forced down </li></ul>
  6. 6. Exhaust <ul><li>Exhaust valve opens </li></ul><ul><li>Piston moves upward </li></ul><ul><li>Spent gas pushed into exhaust system </li></ul>
  7. 7. Diagnosis <ul><li>T hree vital systems to establish a diagnostic routine for the engine. </li></ul><ul><li>Fuel </li></ul><ul><li>Compression or Air </li></ul><ul><li>Ignition or Fire </li></ul>
  8. 8. Fuel system diagnosis <ul><li>Is there gas in the tank? </li></ul><ul><li>Is there gas to the intake manifold? </li></ul><ul><li>Filters? </li></ul><ul><li>Pressure test? </li></ul>
  9. 9. Compression system <ul><li>Is the air filter clean? </li></ul><ul><li>Is the exhaust system flowing? </li></ul><ul><li>Compression Test </li></ul>
  10. 10. Ignition System <ul><li>Is there spark at the spark plug? </li></ul><ul><li>Is there spark from the coil? </li></ul><ul><li>Is there power to the coil? </li></ul><ul><li>Results of a system diagnostic test? </li></ul>

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