Bosch Cis/Co Adjustable Wrench 3mm x 4 - Schley Products, Inc

The Schley Products 80400 Bosch CIS/CO Adjustment Wrench is a specialized professional-grade tool designed for precise air/fuel mixture adjustments on Bosch Continuous Injection System (CIS) and CIS-E fuel control units. This 3mm x 4" T-handle wrench is essential for technicians and mechanics working on classic European vehicles equipped with these specific fuel injection systems, ensuring accurate CO mixture settings for optimal engine performance and emissions.

Key Features

• Precision 3mm Hex Tip: Engineered with a specific 3mm hex tip, allowing for exact engagement with the CO mixture adjustment screw on Bosch CIS/CO systems.
• Extended 4-inch Reach: The 4-inch shaft provides the necessary clearance to access recessed adjustment points on the mixture control unit.
• Ergonomic T-Handle Design: Offers a comfortable and secure grip, enhancing control and leverage during sensitive adjustments.
• Professional-Grade Construction: Manufactured by Schley Products, Inc., known for producing high-quality, durable specialty tools for the automotive aftermarket.
• Dedicated Bosch Adjustable Wrench: Specifically crafted for the unique requirements of Bosch CIS/CO systems, providing a reliable tool for mixture tuning.

Applications

This dedicated adjustment tool is primarily used by professional automotive technicians for calibrating the CO (carbon monoxide) mixture on Bosch CIS K-Jetronic and CIS-E (Continuous Injection System) fuel systems. These electro-mechanical fuel injection systems were prevalent in numerous European vehicles from 1973 to 1994.

Common applications include precise tuning for various Audi, Porsche, and Volkswagen models, such as the Porsche 911, 928, and 924; Audi 80, 90, 100, 200, 4000, and 5000 series; and VW Jetta, Passat, Golf, Rabbit, Cabriolet, Fox, and Quantum. Accurate adjustment of the CO mixture is crucial for resolving issues like rough idle, low power, poor fuel economy, and ensuring proper emissions compliance in these classic vehicles.