Hello,
I have a 98k15 that i am trying to get running normal. I recently rebuilt the engine and added a cam to it. After the rebuild the engine runs great but i have a strange thing happening. The first start every time fires right up and idles perfect. The second and every start after unless it cools down has a stumble rough idle for 10 seconds. It usually requires throttle input on the second/third start to start. once it starts you have to add throttle for 10 seconds. then after that it idles normal and continues to run normally. I have swapped the stock injector to the MPI. I am sure this is related to the cam. I am not much of a tuner being upfront about that. Any suggestions would be appreciated.