It's happened a few times, seems to happen when it's a cold morning and i first start her up. She revvs a little funny (like really low, feels like there's a loss of power), and if I try to give her some gas, she 'coughs' or splutters, making like a 'puff puff' noise, definitely doesn't feel right.

Could it be:

1) an air wall leak (mechanic said I might have to get this checked out); or

2) air mass meter; or

3) something else ?


cheers