Missing on acceleration, slight rough idle at times.

[almiaman]

Hi, Car is WH2 SV6.
I did not post request but searched above topic for the consensus.
I followed most advise and worked way to long to solve problem by doing what most had advised "last". I just hope to save others any extra work.
I had fitted new plugs a few weeks back so that was done.
Next I swapped coils and DFI off a dead VS. No change. Swapped IAC, no change.
Found bad vacuum hose. improvement.
Changed Cam and Crank angle sensors, no change but got to fit new crank seal. Good.
Finally, bought plug leads and all fixed.
Hope this helps sort out the order for someone else.
Plugs and leads 1, Coil pack 2, vacuum leaks 3. Then you are onto the other bits if not fixed by now.
Thanks to all who posted on this popular but annoying fault.
This forum is awesome.
Regards, Al

 

[accentstencil]

Whenever I've had a miss over the years I've replaced the leads and problem fixed. I say leads should be the first thing to try.

 

[Brady Leighton]

Add duct tape