Badly Seated Fuel Injectors, Would they cause severe shake and hesitation? Options

[Celicatime]

My 94 GT failed the emissions test and so I thought I would be mr. fixit and replace the fuel injectors among other things.
First of all - the injectors are a pain in the axx to get to but when I finally replaced them, I'm not entirely certain I seated them correctly.

I put everything back together and started the car and now the engine shakes and hesitates from the get go and doesn't get any better after warm up. I had a perfectly smooth engine and now it acts like the engine is missing a piston.

Before I go to the work of getting at these stupid injectors again I wanted to see if it sounds likely that my problem is related. (sounds silly to even ask it, but I really don't look forward to doing this job again).

[jgreening]

Well, if your engine was running perfectly before, you shouldn't have screwed with your injectors first.

If you failed emissions with a 5sfe, its most likely EGR or exhaust system related.

Also, don't buy a new 5sfe like you mentioned in your other thread. Just fix what you did (or take it to someone that can).