i have a fully built ls v and its still not tuned...i have rc 370 in there and one day i put in stock injectors so i wont burn so much fuel until i break it in and on that day the problem started. When you turn the car on a lil smoke come out bluish a lil bit and when you start driving after about 2 minutes of driving white smoke start to come out none stop and when you park the car for a while it stops. This happens with whatever injector i put now. Some people say it could be piston rings or head gasket but its not mixing oil with antifreeze so i'm not sure i would think that if it was piston rings it would smoke white smoke the whole time. I took out the injector one time and i have oil on it, it semed i had oil in the intake manifold so if anyone knows or had this happen b4 please let me know asap

 

by putting the stock injectors with a fully built ls/v your setup could have ran very lean and damaged something. blue smoke means fried piston rings. im not too sure on the white smoke though.

 

but if it was piston rings wouldn't the smoke be coming out constantly from the moment i turn it on? what about the oil on the intake manifold

 

im not too sure what it could be but youre probably going to have to tear down that motor to fix the problem anyways.

i understand if you didnt have enough money to get a good tune but its situations like this where people need to realize the importance of tuning.