engine problem need some advice/ help

[jay1601]

Made a post a few days ago, about my engine has developed a problem. Its getting more common now. When pulling away for a second has no power feels like its stalled. Or sometimes when putting a bit more load on the engine. 3rd/4th up a steep hill. It only does it at times, and some times it can be fine. Its got full service history. Oil changed every 6 month or 5K which ever first. All new filters and plugs sept 2010

Its not showing up any fault code. Will sit on -20 vac and will still boost as normal.

Anyone got any idea?
Thanks Jay

 

[beachbuggy]

Check for air leaks. if there's a leak in the intake or vac pipes, you'll get a flat spot.

 

[jay1601]

All the vac pipes have been replaced for silicone not really a flat spot, its a almost total loss of power for a split second then its fine again.