My try. I have on the rear cylinders so where the distributors sit on both sides probably no spark when the candles are screwed in.
That's it.
When I have bolted out the candles, I have a spark when I screw them in but the engine runs idle to it and the two rear candles are wet whom I control them and also have no deposits (All candles are new) in contrast to the others.
Injection valves I have already checked are OK.
Distributors and runners and cables are also OK there new

Must say the car has been standing almost 3 years.
Can someone help me so slow I'm finished with my Latin