Pages 20–24 (5 pages)

Checking carburetor performance and road testing

From the 1949–1951 Ford of Canada Fuel System Master Repair Manual

Preliminary checks to make before blaming the carburetor: ignition, engine compression with an altitude chart, and fuel pump pressure. The on-car procedure then covers the automatic choke, idle speed and mixture, the dashpot on automatic transmission cars, fuel level with gauge X-9550E, the accelerator pump and ball check, main body air leaks and the power valve vacuum piston, ending with a road test and mileage tester check.

Read this section free, starting at page 20

What this section covers

  • Compression versus altitude
  • Choke and idle adjustment
  • Dashpot adjustment
  • Fuel level check
  • Accelerator pump and power valve tests
  • Road testing
Year
1949, 1950, 1951
Make
Ford, Lincoln, Mercury, Meteor, Monarch
Vehicle
Carburetors, Components and Systems, Passenger Cars, Trucks
Type
Service Manual
Models
Ford, Meteor, Mercury, Monarch, Lincoln and Lincoln Cosmopolitan cars; Ford/Mercury F1–F8, M1–M8 trucks
Publication
SE391A
Pages
70

What’s inside

Fuel system manual

  1. Cover and forewordCover with the model and year applicability table, manual number SE391A 3/51, and the Service Department's foreword to automotive repair men.pp. 1–4
  2. Carburetor principles (Lincoln, Mercury and Monarch)pp. 5–19
  3. Checking carburetor performance and road testingpp. 20–24
  4. Disassembly of carburetorpp. 25–30
  5. Inspection and assembly of carburetorpp. 31–36
  6. Carburetor specifications and identificationLincoln and Mercury and Monarch carburetor specification charts beginning 1949, with jet sizes for sea level, 5,000 and 10,000 ft, and modification lists by carburetor date code. Also well tube and main jet specifications and how to identify carburetors by suffix letter, date and main body stamping.pp. 37–39
  7. Accelerator pedal and linkageRequired distributor vacuum and recommended idle speeds, then the Mercury and Monarch accelerator linkage changes (A and B suffix designs) and linkage illustrations for the 1951 Mercury and Monarch and 1949 Lincoln.pp. 40–41
  8. Ford and Meteor carburetorpp. 42–51
  9. Fuel pump and vacuum booster pumppp. 52–59
  10. Air cleanerOil bath air cleaners for the Lincoln and the 239 cu. in. engines, how they clean and silence intake air, and servicing every 2,000 miles.pp. 60–61
  11. Fuel tank and fuel lineFuel tank description, gauge unit access, vented filler cap, tank flushing and fuel line inspection and cleaning.pp. 62–62
  12. Engine speed governor (4 and 5 ton trucks)Operation and adjustment of the vacuum-controlled engine speed governor on 4 and 5 ton trucks, set to a 3,600 rpm no-load cut-off, with views of the dual concentric carburetor and governor system.pp. 63–65
  13. Notes pagesBlank ruled pages for the mechanic's own notes at the back of the manual.pp. 66–70

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