One of our operators had a 2001 32 putz 16h out on 1st job of day this wk and was warming up pump b4 starting and noticed about every 4th stroke it wud stroke very slow an than normal for 3 strokes an than slow again. He reduced rpm a lit and everything went back ta normal. Anybody have any insight in situation like this? It hasn't done it since but it's bound ta happen again and if it's something we can take care of b4 coming a major issue.

Time the pistons.

how do you go about timming the pistons we have a simmilar issue. one piston bangs the other is quiet 

I need to talk with you, I have a couple questions.

i believe if the details of your story are accurate you are having some serious issues coming.

Alan Woods 360 600 5695

for the other question, timing the pistons, this is when the operator holds the stroke change button to force the loop oil back into a balanced condition. All pumps with Prox switches do this , now with the computers it is done automatically .