know the real reason for the failures of the pintle style injectors. When I took apart my failed injector apart there were no signs of plastic decomposition and the coil wires were shiny bright but there was a lack of continuity in the coil indicating a short but none visable?
The pintle and its components are not mechanically connected to the coil and it is activated by magnetic field created by the coil and failure did not occur at the pintle.