Lead nº1, anything wrong with it?

And also, the plugs and lead nº1 being changed didnt fix the cold start issue.

Pcv shouldn't make any difference.

 

Change all the spark plugs, not one at a time!

 

If you can't test the leads for resistance, or don't understand, get someone who can.

 

I've looked at your initial post videos and don't see much problem. On cold starts the engine often starts on fast idle and rich, as this is to quicken the heating of the catalyst. But if you switch off and immediately restart, in most cases it will go to a lower normal idle, that's that's just the way the ecu software works.

 

Hunting a little on a cold start is not something I would worry too much about. Cold starts the mixture is deliberately rich, and from the state of your plugs (1 and 2 in particular) I'm not surprised it misfires a little. 

 

I also suspect whatever fuel you are buying is lower than 95 ron or has a high bio content, hence the white deposits,

Edited 20 February, 20188 yr by xman

On my videos they are both on different days and first crank of the day , when the "bad starts" happen there is a distinct bog sound to it like the engine is about to stall, and it still happened even now with the fresh plugs, but thank you for you help you have done plenty, ill talk with my garage about it, or potentially  change garage

Take look here.

 

http://www.ngksparkplugs.com/about-ngk/faqs/spark-plug-faqs/how-do-i-read-a-spark-plug

 

It would suggest that your car is starting to burn oil. Hence the oil on the threads and the condition of the plugs. How much oil does it use?

 

I would also check your fuel supplier. It may be contaminated or low octane fuel.

Edited 20 February, 20188 yr by xman

My car was burning some oil, one of the reasons i switched to 5w40, i'll look more into it and get a compression test when I can, thank you for your time.

Hello, so I did a Air/Fuel ratio measurement with Torque app for about 10 minutes, from what I got I think I'm not running lean, although this test could mean nothing.

The spikes are from when I shift dont know if its supposed to be like that, I believe the A/F ratio should be around 15:1 ?

 

And about the oil I think I found why it got into the chamber, about 3 months ago I removed about 100-200mml of oil from the intake manifold, right after the throttle body, I guess it pooled up like that from the missing pcv valve for so long, but again not sure, that amount of oil would be bound to be sucked trough the valves, If i'm right the next time I check the plugs there should be no deposits what so ever, just hope im not wrong .

But regarding the topic, the rough cold starts still happen, just gonna ignore it for now.

Edited 22 February, 20188 yr by Filipelol

Also have rough idle some mornings. After investigation No 3 lead was defective along with spark plug.  Replaced all spark plugs (NGK) and new leads. 

23 hours ago, Rogie said:

Also have rough idle some mornings. After investigation No 3 lead was defective along with spark plug.  Replaced all spark plugs (NGK) and new leads. 

I have changed the plugs and cable 1, 2 and 3 are left so that should fix the problem, thank you for you comment