In other words, you must properly calibrate a
The calibration will affect the settings of the other adjustable features This is similar to setting the timing of the accelerator pump The rod lengthĬontrols when the enrichment lever travels from the economy stop to the Gauge to set the length of the enrichment diaphragm rod. Once the stop positions are set, you then use a vacuum Both of these methods require the FI unit to be installed Nozzle fuel pressure OR gauge the air / fuel ratio with an accurate exhaust The only way to determine the proper stop positions is to measure the One common misconception is that stop positions can be set on a workbenchīy using a vacuum gauge plumbed to the enrichment diaphragm. The enrichment lever will stay on the power stop as long as the car is Lever moves to the "power" stop to control the nozzle fuel pressure. The fuel pressure at steady cruising speeds. To provide nozzle fuel pressures that are much higher or lower than GM Two stops have an extremely wide range of adjustment. Unit has the best nozzle fuel pressures for efficient combustion. The screw on the right is the Power Stop.Ĭalibration means positioning the enrichment lever stops so that the The blackened horizontal screw on the left is the Economy Stop Power valve, and accelerator pump cam for a Holley carburetor. The Shocking Truth About Calibration Accuracy!Ĭalibrating a fuel injection unit is similar to selecting the right jets,.
Cranking Signal Valve Starting Problems.Cold Enrichment / Choke Design Problems.Installation, Start-up, and Maintenance.
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