TRNW-2: 8L90 Check ball controversy

Wed Nov 12 14:52:53 PST 2025

Group,

We have seen this 2 times this week.  We are working on 2022 8L90 4.3 with NO ESS.  Both of these have never been worked on.  According to everything I seen it only takes 1 large check ball on the upper VB.  One of the units had 3 large balls and the one today has 1 large ball in the middle and 1 by the pump.  So does anyone know what the deal is?

Dan Tucker

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