Running Rough All Of A Sudden

[Mauser]

As topic really took the kids to school no problems, parked up and next time out she is running dog rough sounds like running on 3 but pulled the plugs and considering they have never been out they looked pretty healthy, cars done 135k @ idle the car is shaking and sounding just like 3 firing give her some gas and it does smooth out but you can feel a flat spot when you press the gas fast ?.

Had a look under the search for a few pointers but nothing really jumped out, I guess it could be worth changing the plugs but hate spending dosh on something which doesn't resolve the problem.

Can a blocked injector cause this problem and can it develope so quickly ?.

2.3 Petrol 1999 is the model.

PS Finding the 2 plugs under the coils was interesting :rolleyes:.

[Mauser]

Thanks for all the help...all sorted thanks to me.

[Jayton]

vacuum pipe?