OPEL Z16XEP - Astra 1.6 Engine Performance Issues: Jerking, Power Loss, and Fuel Injection Time

rolnikszukazony wrote:

- injection time on gasoline (I looked through the gas program) 2.25-2.35 it seems to me that it should be above 3

rolnikszukazony wrote:

Hello, I have a problem with the Astra with the 1.6 Z16XEP engine:
- during parking time, sometimes the turnover drops suddenly for 2-3s
-drives as if he had no power and I have the impression that it is getting worse
- injection time on gasoline (I looked through the gas program) 2.25-2.35 it seems to me that it should be above 3
- the probe behind the catalyst shows almost all the time 20mV only when driving at an even speed will jump to max 120mV for a fraction of a second and return to 20 (all the time it shows that it is too poor) - damaged?
-the first probe oscillates normally and shows rich / poor every now and then so it falls off
- can jerk when accelerating and after releasing gas
- I have the impression that he is quite strong despite the prevailing weather (he does not take oil)
- vacuum with lpg map 0.27
- jerking when going pb / lpg and lpg / pb it wasn't there before (maybe regulation)

It's on PB, and if I get it, I would like to take care of lpg, but for now there is nothing to try as on gas has problems. The last 300km driven on the PB itself and does not change. Recently replaced candles, all filters, cleaned throttle, replaced valve timing, checked valve clearance and only 2 mammals and 2 exhausts on different cylinders at the limit of the rest norm ok, compression ok, leakage out of exhaust. I'm most intrigued by this probe after the angle which all the time collapses that it is poor and does not oscillate. No errors on the computer. I am asking for help because I have some experience, I dug it full of topics and ideas missing.

rob4028 wrote:

Preview mix adaptations. They should be at +10 to -10.
The most correct injection time. check error codes in the ECM, even historical ones.

Added after 3 [minutes]:

There is also the issue of leaks on the flaps.

Added after 2 [minutes]:

Or damage to probe 1 by LPG.

rolnikszukazony wrote:

rob4028 wrote:

Preview mix adaptations. They should be at +10 to -10.
The most correct injection time. check error codes in the ECM, even historical ones.

Added after 3 [minutes]:

There is also the issue of leaks on the flaps.

Added after 2 [minutes]:

Or damage to probe 1 by LPG.

The problem is still unsolved, I come back to the topic because I have some time to bury.

Probe 1 rather efficient because it oscillates quickly and in the correct range.

There are no leaks on the flaps because the entire inlet was checked and sealed.

Corrections +12 and sometimes jump, but soon they return at 12. I went to lpg and gave it richly and the corrections did not fall despite the fact that the first poll saw that it was too rich. Setting lpg poorly, the corrections went down to +20.

Rather, I exclude the coil because after switching to lpg it probably works even better than on PB and there is no loss of ignition etc.

I'm considering the pass, but I haven't had the opportunity to check / replace it yet.

The second probe shows more and more often 0mv sometimes jumps to 20mv I don't know if it actually has such a reading or is damaged. As the second probe shows that it is poor, how does it relate to the catalyst? Recently popped up (from 3 months ago this error also appeared) error too low voltage on the second probe, after erasing it has not returned yet. It seems to be eligible for exchange.


As for the previously described symptoms, however, the power is probably not lacking / is normal. However, I forgot to write earlier that the exhaust has been louder for some time and works like a sport, despite the fact that it is tight and nothing was done with it.

rolnikszukazony wrote:

Tomorrow or the day after tomorrow I will have a replacement probe. The intake was tight, but still undressed and sealed again and zero difference so I exclude 99%.

rolnikszukazony wrote:

The probe replaced is now oscillating.
I hope that now I came across the right trail which is the fuel pump I exchanged from 0 580 314 195 to 0 580 314 082 and in total problems have started since (although I am not sure 100%). Can anyone tell me how these pumps differ because I dug through the internet and found nothing but one that costs about PLN 350 and the other PLN 800 ...?
Nothing improves and corrections have been rising recently at +20 before it was at +12.