02 silverado hard to start when warm

[dmarty]

I had the same problem. See my earlier post. It was the press reg. Put a fuel press gauge on it and see what the press is. I just pressed in the Schrader valve on the fuel rail and nothing sprayed out. I'm not sure, so you better check with the manual, but I think the press should be about 60 psi. Also, when I pulled the vacuum line, gas ran out. Replaced the press reg and it has been running fine now for 2 months.