VW linkage Technical Articles

Progressive Weber Carburetor Set Up

Progressive Weber Carburetor Set Up

Progressive Weber

It is important to follow all linkage and lever installation instructions.
The number one and two reasons for tuning errors are improper linkage installations and
over tightened linkage nut, causing a binding in linkage assembly.

CALIBRATIONS MAY VARY DUE TO REGIONAL FUELS AND STATE OF ENGINE TUNE AND PERFORMANCE. POOR RUNNING QUALITY DOES NOT MEAN A DEFECT IN THE CARBURETOR.
AN ADVANTAGE OF THE WEBER CARBURETOR IS ITS EASE OF ADJUSTMENT AND TUNING.

SET UP ADJUSTMENTS

Start set up by confirming carb base line settings.

Do not depend on the factory delivered settings. Check them before the carb is installed.
All settings are done with choke disengaged or warmed up so that the choke is fully opened and disengaged.

Parts you might needlink to category Performance Carburetor Kits

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IDF Carburetors Low Speed Circuit Tuning

IDF Carburetors Low Speed Circuit Tuning

It is most important to verify all linkage and levers are installed without binding
and the linkage opens to full throttle and is allowed to close to the Idle Speed Screw.
This is the number one and two reasons for tuning errors, improper linkage installations and over tightened linkage nut, causing binding in the linkage assembly.

The Individual Runner carbs, IDF, have individual Idle jets and mixture screws for each barrel.
They also have an additional air bleed screws and lock nuts. This is not used for idle adjustment or idle quality.

The settings for these screws should be closed.

Standard IDF Settings:

Parts you might needlink to category Performance Parts

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Carburetor Set Up and Adjustment 34 ICT

Carburetor Set Up and Adjustment 34 ICT

It is most important to verify all linkage and levers are installed without binding and the linkage opens to full throttle position and is allowed to close to the Idle Speed Screw.
This is the number one and two reasons for tuning errors, improper linkage installations and over tightened linkage nut, causing binding in the linkage assembly.

Parts you might needlink to category Stock Replacement Parts

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