Is weed sprayer PS-3 or PS-2. There are some old post about wire routing on PS-3 diesel engines. The capacitors must be folded over board first then wires over top. Some PS-3 initially had wires under caps and that effected DCS signal, including killing it for some other engines. So your problem is probably engie related if you have good DCS strength and properly build layout with both outer rails grounded. G
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