ran tank to low

[langley]

A few days ago I ran my tank almost to below empty,then I dropped it off at the paint shop,when I picked it up three days after it ran like ****,stuttering really bad ,so bad it shakes the whole car,when I took it to my mechanic he said at first it was a deap cylinder,but then he check the compresion and it was fine,so he thinks it is a clogged fuel injector,I ran fuel injector cleaner though it but that didn't work,so should I spend the $100 and do it or should I buy new ones or does it even sound like a injector problem,any response to these questions would be greatly appriciated,

THANKS