[alvanet]

I have a 1998 silverado 1500 series 350 vortec 5.7 liter.\

I just put a new fuel pump and it works fine, but now when the engine is cold it doesn't want to start until I put the accellerator to the floor and choke it, then it coughs almost stalling till it gets going. one its warmed up, it runs fine starts fine as long as I keep it warm or start it up every
two hours. I'm loosing sleep from waking up at 2 am and 4 am to keep it warm or breaking down completely, ha ha. I have 103,000 on it 53,000
of my own miles, I bought it used. I never put a distributor
cap or wires yet, do you think thats it? or is it the catalitic converter.
I don't have much money to replace all my guesses.
The air filter is fine also. Anybody having similar issues?

any suggestions welcome.
Thanks