PMO accelerator pump cam for Induction carburettor rebuild kit. Porsche 911  ❭  PM-O142-0

PMO Accelerator Pump Cam - sold each
The PMO Accelerator Pump Cam is a precision-engineered replacement part designed for Porsche carburettor setups. It regulates the stroke of the accelerator pump, controlling the extra burst of fuel delivered during throttle application. A properly functioning cam ensures crisp throttle response, smooth acceleration, and optimal fuel delivery.

Fits:
PMO Induction 40mm / 46mm / 50mm Carburettors

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 964 (911) RS 3.6L 1991-93
• Porsche 964 (911) RS 3.8L 1991-93
• Porsche 993 (911) C2 1994-97
• Porsche 993 (911) C4 1994-97
• Porsche 993 (911) C2S 1994-97
• Porsche 993 (911) C4S 1994-97

Please see the  PMO vs OE Carb Overview

What the Product Does

• Controls the operation of the carburettor’s accelerator pump.
• Ensures the right amount of fuel is delivered during throttle transitions.
• Improves throttle response and driveability.
• Essential for maintaining proper carburettors tuning and performance.

Symptoms of a Worn or Failing Accelerator Pump Cam

• Flat spots or hesitation when accelerating.
• Poor throttle response.
• Engine stumbles or bogs under sudden throttle input.
• Inconsistent carburettor tuning, requiring frequent adjustments.

Common Reasons for Failure

• Wear & Tear: Repeated contact and movement cause gradual wear.
  
• Aging Material: Plastic or metal fatigue reduces precision over time.
  
• Improper Adjustment: Incorrect setup can stress or damage the cam.
  
• Contamination: Dirt or debris in the carburettor accelerates wear.

Why Replace?

• Restores smooth throttle response and consistent acceleration. 
• Improves engine performance and driveability.
• Prevents poor fuel delivery that can damage engine components.
• Keeps carburetted Porsche engines properly tuned and responsive.       

Ideal For: Porsche enthusiasts and restorers running PMO carburetors who want reliable, precise fuel delivery and smooth throttle performance.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PM-O142-0

The product you are viewing cross references to these numbers