Parts & Accessories

A power valve assembly in a carburetor controls the additional fuel flow needed when an engine is under heavy load, […]

To test a power brake booster check valve, first locate the valve on the brake booster and inspect it for

Power valve adjustment is essential for maintaining the optimal performance of a carbureted engine by ensuring the correct fuel delivery

Yes, a faulty EGR valve can cause a loss of power in a vehicle. When the EGR valve malfunctions—either by

To choose the right power valve for your Holley carb, first measure your engine’s manifold vacuum at idle using a

The 2-stroke engine, known for its simplicity, lightweight design, and powerful performance, has been a favorite for off-road motorcycles, dirt

To determine the correct Holley power valve size, measure your engine’s manifold vacuum at idle using a vacuum gauge. Then,

Yes, a bad purge valve can cause a loss of power in a vehicle. When the valve is stuck open,

A power valve check ball kit installation helps protect the carburetor’s power valve from damage caused by engine backfires. The

A power valve block off disables the power valve in a carburetor, preventing additional fuel from being introduced during high-load

A 4-door power valve provides more aggressive fuel enrichment due to its four fuel enrichment doors, making it ideal for

The 4.5 and 6.5 power valves differ in the vacuum level at which they open, with the 4.5 opening at