AAA Triplex Pressure Washer pump spewing water from vent hole in top of pump housing. There are three vent holes in the top of housing. I've researched a lot trying to find
AAA Triplex Plunger Pump Kit, Model 90032 - Nationwide Generators
4GPM-4200PSI-Brass-Horizontal-Triplex-Pump-90034
SIMPSON AAA 4000 PSI at 3.5GPM Industrial Triplex Plunger Pump Kit in the Pressure Washer Pumps & Pump Kits department at Lowes.com