air/vac leak causing rough idle?

[sportyclansman]

My VT is suffering a rough idle especially when in drive sitting at the lights, its almost like an intermitant miss. Ive got it on direct injected gas 90% of the time & have replaced everything ignition wise (leads, plugs, coil packs & ignitor) I had it mentioned that gas is hard on seals, hense thinking it might be the problem? Any ideas anyone?

[danny1987]

mine was doing the same though not on gas thought it was the intake started to break it down and found all it was is just a old breather broke but was still sitting there looking like nothing was wrong

[sportyclansman]

It does it both petrol & gas. Where is the breather you had the problem with?

[jav360]

Check the purge hose under the throttle body.

[sportyclansman]

Hey thanks for that! I will check it when I get it back, its getting a full repaint at the mo