Replacing The Spark Plugs on a 2004 Saab 9-5 2.3

Unfortunately another unsuccessful attempt to get the lpg system to run.

[@sandikata]

In short NGK is the main problem. They don't have any LPG working sparks. the gap for LPG must be around 0.5mm, but not 1mm or above, like they are.

[@blackraven1304]

No prior knowledege on SAAB but might be too rich mix judging from the pulled plugs. Anyway a fairly easy replacment of plugs on an engine with indudividual coils (compare N52 BMW video). Good luck finding the culprit.