Obstructed injectors on a M130 engine: What's the way to clean them?

[GGR]

Hi all,

as already mentioned in a previous post my cousin is restoring a W113 Pagoda in Europe and got some problems with the injection system. It turned out that four out of six injectors were completely obstructed. He cleaned them with an ultraound bath and had them flowing again but the day after they were obstructed again. Any idea on how to clear them for good?

Thanks!

[meltedpanda]

send them off to be refurbished, there are many online groups and they are reasonable, they refurb them and pop test them for balance. BUT if they are clogging with "stuff" is everything else in good shape, free of rust/dirt?