1. Home
  2. Knowledge Base
  3. Holley
  4. Holley 1940
  5. Holley 1940 Accelerator Pump Repair

Holley 1940 Accelerator Pump Repair

Watch a video about how to install the 1940 accelerator pump.

TESTING YOUR ACCELERATOR PUMP CIRCUIT

1940 Accelerator Pump

Testing your accelerator pump circuit.

  • Fill the pump well with fluid. Mineral spirits work well.
  • Press down on the pump. You should get fluid out of the main discharge (where the drift punch is). No fluid? You have a clogged circuit.
  • While holding down on the discharge check weight (use a brass punch), Push the plunger down. You should feel some resistance. No resistance? Tap on the check ball with a drift punch and hammer. Not too hard.

The main discharge has a check ball, then the check weight. If you don’t have a check weight, use a 2nd ball as the weight.

Holley 1940 Accelerator Pump
Updated on 03/11/2021

Was this article helpful?

Related Articles