we have a 96 blazer that just had a new fuel pump and fuel filter put in it... along with a rebuilt transmission. we have run a bottle of fuel injector cleaner through it with a half a tank of gas. still the same. any ideas on why it is slow to start... takes a couple of times before it turns over and needs you to give it gas to get it going. any ideas??? THANKS!!!!

 

Start by running through the thread below and let us know what you find:
96+ Fuel System Diagnosis
You need to do both the pressure test and the leak down test. The pressure shouldn't leak down more than 5 psi over 10 minutes.