06/02/2026
One of the most common questions we get about our Saginaw, GM Type II, and Billet Power Steering Pumps is:
"How do I bleed my power steering system?"
or
"Why is my fluid foaming or full of bubbles?"
In most cases, trapped air in the system is the culprit. Properly bleeding the system is critical for quiet operation, smooth steering performance, and long pump life.
Before You Begin: Safety first. Support the vehicle securely and keep hands, clothing, and tools clear of moving components.
1. Raise & Secure the Vehicle
Lift the front wheels off the ground and support the vehicle with quality jack stands. Chock the rear wheels to prevent movement.
2. Position the Steering
Turn the steering wheel fully to the left.
3. Fill the Reservoir
Fill the reservoir with a quality synthetic power steering fluid. For new pumps, avoid using ATF unless specifically recommended by the vehicle manufacturer.
4. Cycle the Steering
With the engine off, slowly turn the steering wheel from lock to lock at least 20 times. Check the fluid level frequently and add fluid as needed.
5. Watch for Air Bubbles
Inspect the fluid in the reservoir. If bubbles or foam are present, allow them to dissipate before continuing. Repeat the lock to lock cycling until the fluid remains clear and stable.
6. Purge Remaining Air
Cycle the starter a few times without allowing the engine to fully run. This helps move fluid through the system and push out any remaining trapped air.
7. Start & Idle
Start the engine and let it idle for 5 to 7 minutes. Monitor the fluid level and inspect for any signs of foaming.
8. Final Check
With the engine running, slowly turn the steering wheel from lock to lock several more times. Top off the fluid as needed, lower the vehicle, and take it for a short test drive.
If the fluid continues to foam after repeated bleeding cycles, inspect all hose connections and the pump inlet side for leaks that could be allowing air into the system.
Shop power steering: https://marchperformance.com/accessories/power-steering/
