weird problem with revo

[t-maxxracer32]

hey well i got my revo the other day and it was running perfect. would startup and run untill the tank was empty. i broke off the little blue thing that holds the exhaust to the header so i replaced it with a bigger one and had to like jimmyrig it on there. it still fits and everything.

problem.

when i go to start it up it will start up fine within a second but then if i try and give it any gas it will die. and i can do that about 3 times but after the 3rd to 4th time it wont even turn over any more... then if i wait a while and change glow plugs it will work..

what do you guys think?

thanks