- Aug 30, 2007
- Reaction score
There seem to be a few factors that affect head washout. The last wash I ran had the heads start to wash out in the center high pressure seal area after two years. I replumbed them so the water wouldn't change direction when the trigger was pulled and released, and it was fine after that. My current wash is the exact same setup and still plumbed the way the other one was, but it's 20 years old and none of the manifolds have been replaced. The same soap was used at both for the first few years.