Re: fuel probs
My ea used to give out white smoke on start up aswell, and shudder. After, it would run sweet with no smoke at all. Since then I have changed my coolant temperature sensor and I haven't had that problem.
I am assuming that you have the multipoint.
Firstly, I would do a diagnosis on the computer to check for errors. Remember to reset the computer once you have fixed any errors that showed up.
You could also go to the wreckers and get a coolant temperature sensor, oxygen sensor and an MAP sensor out of an ef. This is what I did.
Also, check that the vacuum hose going to your MAP sensor is not cracked.