Skodillac_fi

Problem solved. Now I know that one should always think what has changed from the earlier emission check.. Ignition coil ,that I changed earlier, cut off ignition randomly and therefore emissions were so high. After changing ignition coil everything went back to normal as it was in the earlier emission checks. So the conclusion is that the ignition coil which wasn't original skoda part went off in 4 months or it didn't fit at all with the magneti marelli engine control unit. After all, this was quite an expensive fault detection when the actual fault was this simple:mad: Thanks everyone for interest and good hints:thumbup:

Cat has been changed, no improvement.. We are getting closer to the moment when I have to officially pronounce this Skoda dead.

I have come to conclusion that this skoda engine is really irrational.. You can't adjust anything and everything is working but something isn't. Now after flushing the engine and oil changing, emissions at the idle speed would be nearly inside the limits and local Skoda dealer said that it seems like cat isn't working at all.. Maybe I should change the cat next but the original spare part cat from Skoda dealer costs 860 euros!! Quite a stunning price, so I think I buy that cat from some other place =)

Spark plugs have been changed a year ag. After that, about half year ago ignition coil went off so it may have had some effect on the spark plugs back then. Temp sensor has been changed few days ago, also the thermostat has been changed earlier because engine temperature wasn't high enough and thermostat was almost in pieces inside the thermostat housing. Thanks again. Timing is the next thing that should checked and that's one thing that I can't do myself.

Now here is some pictures of the car and the spark plugs, spark plugs are in order 1 to 4 where the first spark plug is closest to the distributor.. Maybe there is a slight difference between 4 and the others, but that might result from my old camera or from removal process.. It's kind of shame to scrap a car, when it's otherwise in a good conditon:(

Thank you for those hints, there was some things that I haven't tested yet.. Have to take the spark plugs off first and see what they look like. Yes, I changed new oil yesterday and now I think that I can hear some knocking specially when engine is cold. Still I dont't have any idea could that mix up the engine mixtures in some way..

Now tested without air filter, no changes.. also tested when brake booster vacuum hose was off and even this "leak" straight to the intake manifold wasn't enough to turn mixture to lean.. So the problem is that lambda sensor tells that the mixture is too rich so there is too much fuel, but anything doesn't decrease fuel amount.. So the problem isn't the cat because lambda sensor before the cat tells that mixture is too rich.. Any ideas??

Have to try that in the next emission test.. I let the engine run without the air filter and tried how strong is the suction in the air intake pipe. It wasn't very powerful but I guess it shouldn't be when engine is running on a idle speed..

Car has gone through the diagnostic test and there weren't any problems. All sensors work, everything were as it should be, but still emissions are too high. If the engine burns oil, shouldn't I see some thick smoke from exhaust pipe? Exhaust specialist said that it burns all the gasoline fine because the lambda sensor was very clean after emission tests, he even tried another lambda sensor and still no improvement. He also said that it can't a cat problem because a cat can't even clean this amount of emissions.. Now anyone has no idea what to do. Maybe the ECU is broken in some way, but that is way too expensive to change..

Car is at the moment in the exhaust specialist's carage, but numbers were about CO 4.4 5.6 HC 144 250 CO2 11.1 14.3 O2 1.6 0.8 First figures are at the idle speed and second over 2000 rpm

I have a nice little problem with my Felicia 1.6 -96 engine. When tested the emissions of this car, they have been something amazing.. I allready changed the lambda sensor, rear part of the exhaust pipe and still no improvement. Then I run out of ideas and went to see a car exhaust specialist. He tested the car and new lambda sensor and there was no problem, but emissions are still too high. Now I don't know where the problem could be. Engine runs smoothly, fuel consumption has been 6-8 litres per 100km. But the car specialist said that the fuel consumption of this car should be some 15 litres with these emission results.. Anyone have had problems with 1.6 engine emissions??

Now skoda is back on the road, problem was that ignition coil.. Thanks everybody for help, let's wait for another fault to come up..

I haven't found any solution to this problem.. yet. If someone has a similar car, could you check on your car which is the correct order of the spark plug wires in the distributor cap? I think I have the right order but I wan't to be sure on that. I have trying to dry the engine room and components but it didn't help. After a few calls to the car electricians, I now know that the problem is usually in the hall sensor, as daverapid said, or it could be the ignition coil. Usually there hasn't been any problems with the ECU unit.. I also heard that it's possible to check the "trouble" codes with computer so that could really help, if the code tells for example which sensor is out..

This is my first message to forum and I'm trying to write as good english as I can. So, my problem is: my felicia 1.6 won't start up, the problem is pretty much like Captain Sisko had in his favorit (http://briskoda.net/favorit-felicia-fun-forman/favorit-1-3-turning-but-not-firing/142235/). I have had this skoda five years allready and I haven't any electrical problem before. It all started when washed my car a few days ago. It started up nicely after the wash but it died after few seconds. Next day it started up again well and I tought everything was okay but today it died again after driving a few hundred meters. I have checked all cables which came out from ECU box, I changed rotor arm and distributor cab, but I haven't got any kind of spark from plug. I measured the voltage coming out from the coil and I don't know was the voltage high enough but I got some readings. Now I really don't know where is the problem, some sensor? something else? I also red this thread http://briskoda.net/favorit-felicia-fun-forman/felicia-1-6-glxi-wont-start/100970/ but I have got some redings out from coil so it can't be dead or could it be..