Hello everyone, I have a 2006 mk1 skoda fabia with the 1.4 16v engine, bbz I think it's called. I have a bit of an issue with it, when I'm stopped at a traffic light in idle the engine light starts blinking and the engine runs very rough, if I accelerate the problem persist and the car as very little power. If I restart the car the engine works fine when going at mid/high rpms. I borrowed a friend obd reader and I saw that there was a problem with the pressure in the intake manifold(map sensor or leak?), misfire in cilinder 2 and 4 and also a problem with the o2 sensor. Did any of you guys experience a similar thing or can anyone help?   Thank you very much!

Classic failing coil pack symptoms, in a perfect world you should replace all four, but just 2 and 4 will fix it for now.

9 hours ago, sepulchrave said:

Classic failing coil pack symptoms, in a perfect world you should replace all four, but just 2 and 4 will fix it for now.

Ok if that is the issue great, I will try switching the coil packs between cilinders and see if the missfire changes, if that is the case I will replace them

Can it be egr?

8 minutes ago, raffaplev said:

Can it be egr?

 

Yes, it can be lots of things, but misfires are generally always coil pack or spark plug related. Is it still misfiring?

4 minutes ago, sepulchrave said:

 

Yes, it can be lots of things, but misfires are generally always coil pack or spark plug related. Is it still misfiring?

yes, just at idle when the engine is hot. Can I check myself the egr valve? and what should I look for?

On ‎15‎/‎01‎/‎2019 at 06:35, raffaplev said:

I will try switching the coil packs between cilinders and see if the missfire changes, if that is the case I will replace them

Did you do this?

1 minute ago, Wino said:

Did you do this?

yes, didn't change a thing

Did you look at the spark plugs at the same time?

1 minute ago, Wino said:

Did you look at the spark plugs at the same time?

not really, I just changed the position

Oh, OK, so coil packs and spark plugs moved; but still cylinders 2 and 4 misfiring?

Check the brake servo vacuum hose for splits and leaks.