No, actually it was happening before he worked on it. I asked him if he would check the cold start valve and he did (checked out OK). Then when I went to pick up the car it started fine, an hour later again it started fine and then didn't develop problems until later that evening. Also he showed me the plugs and they were in perfect condition. I did not change them so they were changed by the previous owner aboutr a year ago. Also he showed me the engine and it was really clean. He also checked out the plug wires and they all checked out. I want to know about how to check the relays both OVP and the Fuel Pump.