Vx gas issues

[outerwater]

Travelling home the other day and my gas system decided to backfire.

Soon as it backfired car started running very ruff feels like its not running on all cylinders.

Have now replaced plugs, leads, new airbox, but still running very ruff.

Any ideas would greatly be appreciated, tomorrow i will try my coil packs from my other vx.

Any one had this issue before please help.

Cheers.
Outerwater

[Burnout124]

there is a vacume line that runs throught the manafold and should go from below thre throttel body to a vacume box check this has not come off it will cause it to run rough

[1_johnboy]

also that the plugs are gapped correctly for gas