1. Home
  2. Carburetors
  3. Tillotson
  4. HL-Series
  5. HL-Other
  6. Tillotson 34-190 Uncaptured Inlet Needle
Tillotson 34-190 Uncaptured Inlet Needle
34-190 Tillotson Uncaptured Inlet Needle
Write a Review

Tillotson 34-190 Uncaptured Inlet Needle

Part Number: 34-190
Online Price: $2.29
Tillotson 34-190 Uncaptured Fuel Inlet Needle for 4-Cycle Carburetors
Availability: In Stock.

Send to:

*We'll ask for shipping info at checkout

Description

Tillotson 34-190 Uncaptured Inlet Needle – OEM Fuel Metering Needle for 4-Cycle Engines


Reliable Fuel Flow Control for Upward Pump Stack Carburetors

The Tillotson 34-190 Uncaptured Inlet Needle is a genuine OEM fuel control component designed for Tillotson carburetors, primarily used in 4-cycle racing engines. Unlike captured styles, this needle lacks a dowel or stem and is actuated by the fulcrum arm resting directly on top of the needle. This design allows for slightly more movement, making it ideal for engines running on rough or bumpy tracks, where added flexibility improves fuel control.


The 34-190 needle is typically used in carburetors with upward-facing pump stack plates, such as those found on many Briggs & Stratton, GX200, or other karting engines. It ensures consistent metering of fuel from the inlet seat, crucial for smooth idling, throttle response, and overall engine performance.


Key Features:

  • Part Number: 34-190
  • Design: Uncaptured inlet needle (no dowel stem)
  • Application: 4-cycle engines, rough track conditions
  • Carb Type: Upward pump stack Tillotson carburetors
  • Purpose: Precise regulation of fuel entering the metering chamber
  • OEM Quality: Designed for reliable sealing and consistent pop-off pressure


Why OEM Matters – Avoid Aftermarket Issues

Aftermarket inlet needles and seats are a top cause of carburetor issues following a rebuild. These parts often fail to seal properly, leading to fuel flooding at idle, unstable pop-off pressure, and poor engine performance. Always test with a pop-off pressure gauge to verify proper seal and functionality.


Fitment Note:

Be sure to verify your carburetor model and pump stack orientation before ordering. The 34-190 is intended for uncaptured configurations with upward-facing fuel stack plates.

FAQ

Q1: What does “uncaptured” mean in an inlet needle?
A: It means the needle lacks a dowel or stem. The fulcrum arm rests directly on top of it, allowing more vertical play and flexibility.


Q2: What engines is this needle used for?
A: Primarily for 4-cycle kart racing engines like the Briggs Flathead, GX200, and similar clone motors with upward-facing pump stacks.


Q3: Can I use this with methanol?
A: This needle is typically intended for gasoline use. If you're using methanol, confirm compatibility with your carburetor model.


Q4: Why avoid aftermarket needles and seats?
A: They often fail to seal properly, leading to fuel leaks, flooding at idle, or poor engine performance. OEM parts offer reliable sealing and durability.


Q5: How can I verify the needle is sealing properly?
A: Use a pop-off pressure tester during assembly to ensure the needle holds pressure and doesn’t leak under load.

Related Items

Recently Viewed Items