Ignition coil

[El_Camino]

Its so weird how the wires on my car are Ivan. I bought it like this, just didnt take care of the problem so far, because I'm driving it only when I go to BG and because the problem occurs in not more than 20% of the starts. The other times the engine bites and starts from a half turn.

The connector on the distributor I have is the yellow one. Anyway - 4 wires are going out, but the two white ones are connected together, so 3 reach the connector - a white, a blue and a red.
The white and the red are cut and connected across.. means red to white, white to red. When I connect them the right way, the car gets rough idle and stalls.
My guess is, because of the different ignition (6 instead of 5 wires, connector colour grey and different number), they had to change this too. I'm planing to change the distributor too, but first want to check if this is the reason.

I checked that the when the problem occurs, the spark is missing. The sparks are new iridium NGK so this is not the reason. It is important to say, that when running - the engine is working as new... no probs at all... smooth idle, revs very well.

Btw. how do you believe the wrong timing could affect the starting in this way?