Car running rough, coughing then back firing

[bullseye]

Hi was wondering if anyone can help.. Car running rough, coughing then back firing, tried replaced sparks, temperature and air sensors still spluttering into life after revving engine... Anyone got a clue????

 

[LEE69]

What car is it could be any of the Leon range?
Also get it vag com'd, if you're not sure what it is have a search

 

[DannyC87]

coilpacks..

 

[HallycupraR]

Def coilpacks mine was the same few weeks back

 

[bullseye]

car is seat leon cupra t. 1.8. thanks for help will check coil pack ta

 

[HallycupraR]

If you get it on vag com will tell you which cyclinder in missfiring altho you should replace all 4 at ones as the others will follow, i got mine from euro parts for about £30 each

 

[shauncupra]

Hi was wondering if anyone can help.. Car running rough, coughing then back firing, tried replaced sparks, temperature and air sensors still spluttering into life after revving engine... Anyone got a clue????

i had a simalar symtom with mine a couple of years ago, mine turned out to be a a cracked/broken away vacuum nipple underneath the inlet manifold (not seen) causing the fuel pressure not to rise in the fuel rail under accelaration.

(this vac pipe goes from underneath the inlet manifold to the fuel pressure regulator)

see if thats all ok aswell matey.