Opel Corsa D 1.2 - Uneven engine operation + incorrect firing

Hey,

at the beginning I would like to say hello and write that I never thought that I would set up an account here, but recently I bought my first car and I am quite concerned about the engine work, but from the beginning ...

I replaced all the candles, plus filter oil. The 2008 Corsa with a mileage of 86k miles, the timing chain was not replaced, but the engine is not yet like a tractor.

Now what's going on, although I realize that it will be hard to describe. The engine does not run evenly, it does not lose power while driving. When it slackens gently in place, everything seems fine. Such engine operation is always important, no matter if the engine is warm or cold. I don't think it's a timing. This is the first ailment. On the other hand, number two is the engine every time I don't know ... coughing, choking on the first start on a cold engine? When the car is warmed up, everything is fine.

I will report to the mechanic anyway, but I would like to know more or less what t can be. Thank you in advance for your help.

Very often coils and / or coils pipes sit down. Look for about 30 PLN / pcs of pipes on the Internet.

Just out of curiosity, check the camshaft clearance. I have already seen two such cases in these engines.

As the previous speaker said. Or the ignition cassette for replacement, but also in these engines, the fallen flow gives such symptoms

If you have a Z12EXP engine try to clean the throttle and replace the air filter, it used to help me once

Thanks gentlemen, I will definitely look at everything for the weekend. In the meantime I throw a video about how the cold engine starts.

I noticed that I also sometimes hear such ticking and also only on a cold engine when I am driving.

This wheel of variable camshaft phase had in Renault on a cold start like an old diesel like yours. After the exchange, everything was perfect.

But there is no wheel of variable timing phases.

Sorry I didn't read it actually isn't. But it sounds identical. only the timing remains to be checked, because in my opinion the tensioner is damaged, the problem occurs immediately after firing when the oil pressure is just rising, as if the tensioner works with a delay and tightens the chain only after reaching full pressure. And when the engine comes with such a loose chain, the valves run with a slight delay and only after a while everything normalizes, hence this sound may be wrong but for me it is the only rational explanation.

If it's a tensioner, is it a problem that I should worry about at the moment? Overall, I planned to change the timing belt with the pump next year. This is my first car and I prefer to take care of it, even though it's already old.

As for Meganki, my dad had Renoult and the engine sounded exactly like Corsa. It turned out that the timing was already falling apart and there was probably something with the head gasket.

You mean that clatter after starting the engine?

Yes, that's exactly what I mean, because in general the engine works well. It is known, sometimes I hear some strange ticking, like clockwork, but also when the engine is cold, but I realize that the car is already old.

They are not hydraulic tappets? What happens to the oil pressure during and just after starting the engine?