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Second Chance Garage

For the Classic Car Restoration Enthusiast

Second Chance Garage


Second Chance Garage

For the Classic Car Restoration Enthusiast

Second Chance Garage

Second Chance Garage

For the Classic Car Restoration Enthusiast

Second Chance Garage

TROUBLESHOOTING

1953-1960 Classic Car Engines Troubleshooting Guide: Lack of Power or High Speed Performance

Things to Look For:

It should be noted that the altitude at which the car is operated has a decided effect on performance. A car adjusted for normal altitudes will lack performance at high altitudes, whereas a car which operates normally at high altitudes may have a lean carburetor adjustment and show signs of preignition when operated at sea level.

  1. Ignition timing incorrect.
  2. Centrifugal governor advance not operating properly.
  3. Vacuum advance not operating properly.
  4. Ignition points burned, pitted, sticking or bouncing (due to weak breaker arm spring).
  5. Faulty spark plugs.
  6. Faulty ignition cables.
  7. Faulty ignition coil.
  8. Faulty carburetion.
  9. Lack of engine compression.
  10. Preignition.
  11. Inoperative manifold heater valve (stuck closed).
  12. Restricted carburetor inlet resulting from dirty air cleaner or choke valve not fully open.
  13. Carburetor throttle lever loose on shaft.
  14. Throttle linkage not properly adjusted.
  15. Carburetor throttle valve not completely open.
  16. Carburetor accelerating pump not functioning properly.
  17. Improper fuel pump operation.
  18. Partially restricted exhaust pipe, muffler or tail pipe.
  19. Clutch slippage.
  20. Excessive rolling resistance resulting from (a) dragging brakes, (b) tight wheel bearings, (c) misalignment of power transmitting units, (d) misalignment of rear axle, (e) underinflated tires.
  21. Incorrect rear axle gear ratio.
  22. Oversize tires.
  23. Incorrect valve timing.
  24. Inaccurate speedometer (gives impression of lack of performance).

The Complete Guide to Troubleshooting 1953-1960 Era American Classic Car Engines