CBZ ignition coil / spark cables connection order

[Retali]

Guys hello, once again me, me with the stupid questions lol...i have the ngk system (sparkplugs,cables,coil and made around 20k with them) and felt some misfires while idle.

I started inspecting the cylinders with obd11 live data shows some misfires in cylinder 1 and cylinder 3, while idle (like 11 misfires in seconds) , not at both cylinders and not at the same time and not always.

While i was searching the internet about the life ignition coils etc saw the correct order of cables onto the igniton ( 1 on A, 2 on B, 3 on C and 4 on D) (i have the ngk system (sparkplugs,cables,coil and made around 20k with them) i saw that on my car
the cable of cylinder 1 was on the D position of ignition coil and cable of cylinder 4 on A position.

To the question, is that a problem that they were placed on wrong order ? Can i place them correctly now ?

Should i remove coil and cables and check their resistance and voltage etc ?

I checked the spark plugs and seem okeish.

[2226]

Depends if that coil is wasted spark or not.
For wasted spark, 1 coil serves 2 cylinders. One cylinder fires in non-ignition stroke (spark is "wasted"). If that's cylinder 1 and 4 then it doesn't matter if they're swapped around.
You'd also know clearly if you've wired them wrong. It won't just be an occassional misfire at idle.
Ask me how I know... I got the firing order wrong once on my old Golf and I literally couldn't stop the thing from running.

Take a photo of how they're set up now and post it here.
Compare setup to online photo of CBZ engine as well.

I have a CJZD, also felt misfires at idle.
I monitored and found I had 40,000 misfires logged against each cylinder.
Misfire is detected by difference in piston speed at top and bottom of travel.
So I figured I might be losing compression somewhere like through the intake valve for example.

Carbon build-up on direct injection can do that.
I ran CRC GDI IVD Intake & Turbo Cleaner through the engine and the misfires stopped. Sometimes carbon build up on the intake valves will prevent the valve from sealing and you will lose combustion compression causing the cylinder to slow down and hence trigger a misfire count.

[Retali]

Depends if that coil is wasted spark or not.
For wasted spark, 1 coil serves 2 cylinders. One cylinder fires in non-ignition stroke (spark is "wasted"). If that's cylinder 1 and 4 then it doesn't matter if they're swapped around.
You'd also know clearly if you've wired them wrong. It won't just be an occassional misfire at idle.
Ask me how I know... I got the firing order wrong once on my old Golf and I literally couldn't stop the thing from running.

Take a photo of how they're set up now and post it here.
Compare setup to online photo of CBZ engine as well.

I have a CJZD, also felt misfires at idle.
I monitored and found I had 40,000 misfires logged against each cylinder.
Misfire is detected by difference in piston speed at top and bottom of travel.
So I figured I might be losing compression somewhere like through the intake valve for example.

Carbon build-up on direct injection can do that.
I ran CRC GDI IVD Intake & Turbo Cleaner through the engine and the misfires stopped. Sometimes carbon build up on the intake valves will prevent the valve from sealing and you will lose combustion compression causing the cylinder to slow down and hence trigger a misfire count.

Thank you for the thorough explanation, now i have them like this , before that 4 was on A and 1 was on D, but from what you said i gather that 4 and 1 fire together, so do 2 and 3, do it does not really matter!
I have thought of carbon buildap and checking for soda blasting but it is a bit on the pricey side.
If i could rotate the crankshaft by myself to close the valves , i would do a diy soda blasting on them. I have an air compressor and i would just buy a low gravity gun.

[2226]

That diagram shows 2 coils in there. Each ohm mark is the clue. So you can swap wires on each coil if it's wasted spark, but not across coils.

Not soda blast, but walnut shell.
Soda blast might be too fine.
I am still trying to get around to doing the same, but there's like a national shortage of walnut media around here. The prices have tripled in the last year. Cheapest is buying from the watchmaker here.

Try CRC GDI IVD Intake & Turbo Cleaner if you can get it.
My local CRC importer switched from sourcing from the USA to sourcing from Europe and now GDI IVD is hard to find. The replacement intake cleaner didn't do the trick as it is just naptha and there is no PEA (polyetheramine) in there. Also GDI IVD contains diesel #2 fuel which I swear is what does the cleaning.
I have found 1 local shop that has the last case of 12 GDI IVD... I'm gonig to buy the whole lot. It made a huge difference on my car, but I still need to do the carbon clean with walnut shells.

[Retali]

That diagram shows 2 coils in there. Each ohm mark is the clue. So you can swap wires on each coil if it's wasted spark, but not across coils.

Not soda blast, but walnut shell.
Soda blast might be too fine.
I am still trying to get around to doing the same, but there's like a national shortage of walnut media around here. The prices have tripled in the last year. Cheapest is buying from the watchmaker here.

Try CRC GDI IVD Intake & Turbo Cleaner if you can get it.
My local CRC importer switched from sourcing from the USA to sourcing from Europe and now GDI IVD is hard to find. The replacement intake cleaner didn't do the trick as it is just naptha and there is no PEA (polyetheramine) in there. Also GDI IVD contains diesel #2 fuel which I swear is what does the cleaning.
I have found 1 local shop that has the last case of 12 GDI IVD... I'm gonig to buy the whole lot. It made a huge difference on my car, but I still need to do the carbon clean with walnut shells.

I am definetaly sure that i will never find walnut shells in Greece as items to buy here. People never heard of that as meaning of cleaning valves .

There are only garages that do soda blasting, and they post before and after photos, so i guessed it would work.

I will check the cleaner you suggested !!!