the car cranks up and but wont starts and a little whit smokes comes out of the exhaust and smells like gas any idea why it wont start?

 

Sounds as though it is flooded. Check the FAQ for unflooding and follow the directions.

If the car constantly floods, then have the injectors professionally serviced.

 

the injectors are brand new it started up yesterday and alote of white smoke came out and its doing the same thing again today

 

Did you use larger injectors and a stock ecu? You might be flowing way too much fuel. Unplug the power from the fuel pump and crank till it starts and dies.

 

If that started happening since you changed the injectors, it's very likely that that's problem. Either they could be defective, or they are the wrong ones.

Also, like Aaron stated: it could be flooded.

 

idk what kind of injectors he put in but i think he bypass the fuel relay cause its not connected to the plug so when i connected the plug and cranked it it wouldn't start again so i took it out and the next day it started and now it wont start again

 

Again: that's sounds like it's flooded.

And you really need to check if the injectors that were installed are the correct ones or not.