Ok, same friend I was asking about before that has the 97 Tahoe with Vortec 350 is having problems again. He went out this morning to start it and it wouldn't start. After trying for a whiel he got it to start but now once it starts it revs up to about 6k rpms and then tries to die. He said he can keep it running a little bit, but it acts as if its flooding and wants to die. Any ideas?