Lang TU-32-21 Fuel System Restriction Test Gauge, Compuchek-Style Hose Assembly

Lang TU-32-21 Fuel System Restriction Test Gauge, Compuchek-Style Hose Assembly

• The Lang TU-32-21 Fuel System Restriction Test Gauge is a diagnostic tool for checking fuel system restriction on diesel engines with Compuchek test ports. It features a 3-1/2″, 30 inHg vacuum gauge and a flexible hose assembly to facilitate in-vehicle testing with ease.
• Features:
  • Used to check fuel system restriction on diesel engines with Compuchek test ports
  • Fits Compuchek test ports on the fuel systems of Cummins, International, and Detroit Diesel engines as well as other diesel engines that have been outfitted with the Compuchek test ports
  • Consists of a hose assembly with a female Compuchek fitting on one end and a 3-1/2 Inch, 30 Inch Hg vacuum gauge on the other
• Specifications:
  • Manufacturer: Lang Tools (Kastar Hand Tools)
  • Part Number: KHTU-32-21
  • Item Description: Diesel Fuel Restriction Tester-Compuchk
  • Hose Size 6 Foot
  • Used On: Diesel Engine
  • Includes Compuchek Test Port
  • Country of Origin: US
  • Harmonization Code: 90262080
  • Default Selling Unit: EA
• The Lang TU-32-21 Fuel System Restriction Test Gauge can also be referred to as Compucheck fuel restriction tester, diesel fuel restriction gauge, Lang TU32-21 restriction gauge, fuel system diagnostic gauge, and vacuum restriction tester.

Lang’s TU-32-21 restriction gauge is built for professional diesel engine diagnostics. Designed for use with Compuchek test ports on Cummins, International, and Detroit Diesel systems, it’s a precise, durable tool for fuel system performance evaluation.

Q: Which engines or systems is this gauge compatible with?
A: It is compatible with diesel engines using Compuchek test ports, commonly found on Cummins, International, Detroit Diesel, or other systems retrofitted with Compuchek ports.

Q: How do I interpret the vacuum reading?
A: Lower vacuum (closer to zero) indicates minimal restriction, while readings nearing the 30 inHg end suggest high restriction. Use OEM or service manual specification for permissible vacuum thresholds.

Q: Can I perform road testing with this gauge?
A: Yes. The flexible hose assembly (approximately 6 ft) allows connection and measurement while the engine is operating under load conditions.