VW Jets Technical Articles

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

Click here to continue reading this article…

By admin on September 23, 2009 | Engine and Trans, Fuel System, How To's, Maintenance
Tags: , , ,

Locating the Jets in an IDF Carburetor

Parts you might need - link to category Carburetor Jets

By admin on September 21, 2009 | Fuel System, How To's
Tags: , ,