Technical Engine light flashing about around 3000 rpm

[Doxx]

Hey,
The problem is that the car flashes the engine light for a moment and disappears.
At the weekend on the highway it did something 15 times or so, and now again it was blinking. In error codes indicate:
P0300 Ignition failure, intermittent
P0301 Cylinder 1, ignition failure, intermittent
P0302 Cylinder 2, ignition failure, intermittent
P0303 Cylinder 3, ignition failure, intermittent
P0304 Cylinder 4, ignition failure, intermittent
Replaced in car: spark plugs, ignition coils, battery. The only thing that has not been changed (original by factory): Oxygen sensor, gasoline filter ( have to ?), plug-in wires? There is no other problem than the fact that the car sometimes accelerates a little lazily, sometimes the exhaust smells when it comes to "gas".
Would there be any information that could be wrong? The car is Fiat Bravo year 2012.

I am so with this.

 

[Matthen]

Which engine do you have?


The tjets are very fussy when it comes to spark plugs. They should be iridium tipped:- they're about £65 GBP a set.

 

[chris3234]

This is normally a sign that the car needs a phonic wheel relearn has the car had a timing belt change latley? The procedure should be carried out afterwards but many garage's don't know about it

 

[Doxx]

Engine is 1.4 petrol. No T-jet model.


Timing belt has been changed 3 years ago. Next year should be time to change it.

This engine light has been problem about two years. Sometimes nothing, sometime flashing.

 

[chris3234]

Engine is 1.4 petrol. No T-jet model.


Timing belt has been changed 3 years ago. Next year should be time to change it.

This engine light has been problem about two years. Sometimes nothing, sometime flashing.

Definitely sounds like it need a phonic wheel relearn
Especially if the car drives fine when this light flashes

 

[Doxx]

Definitely sounds like it need a phonic wheel relearn
Especially if the car drives fine when this light flashes

Thanks much for this hint!

Only problems what I have noticed sometimes (with or without flashing):
-The car accelerates lazily, but goes event 160 km /h.
- Sometimes when start in the morning, I smell little like gas outside?