Re: Car shuttering at start up?
Mine is more severe on some occasions than othes.
When it is worst, it feels like it is running on 4 or 5 cylinders until I lightly tap the throttle, then it picks up. It is likely a lack of fuel scenario, or lack of spark - but I assume fuel.
The car does 'wiggle' a bit when it does this...and it doesn't sound smooth audibly.
SQ