Section 04
ENGINE
Subsection 08
(CARBURETOR AND FUEL PUMP)
04-08-18
TYPICAL
This enrichment process of the air/fuel mixture takes place at start-up and during engine warm-up, and it
depends on engine temperature.
The higher the engine temperature upon start-up, the leaner the mixture.
This enrichment progressively decreases and takes place during no more than approximately 1-1/2 min-
utes. Once the engine is started, the module reduces the solenoid duty cycle. The warmer the engine, the
shorter the enrichment mode.
If the throttle opening exceeds one quarter, the enrichment mode is interrupted during the starting pro-
cess, which allows unflooding the engine.
However, the enrichment mode is restored when releasing the throttle.
A06I0NS
TO
CARBURETOR
CALIBRATED JET
AIR JET
ENRICHMENT
SOLENOID
FROM AIR PUMP
REAR VIEW
ACTIVE
TO
CARBURETOR
COMPENSATION
SOLENOID
Summary of Contents for Formula MACH 1
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