I have mercruiser 5.7 thunderbolt 250hp. Recently when I start the engine, it runs rough and stalls. I have to prime few times and give it some RPM to warm up. After few minutes on higher RPM I can put into idle.
Welcome to Iboats. You will get more help if you put this in the I/O forum. Sounds to me you need to take a look at your choke. Make sure it closes all the way when cold. Then we can go from there.
