MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.
You are invited to join our public Boat Repair Forum to seek assistance from other members.
You may also visit the Boat Motor Manuals section of our site to obtain a service manual.
I suppose the exhaust port you are talking about is above the water line ?
That is the idle exhaust port. If you were to cover that port with your hand or finger the exhaust would exit through the prop.
If you have a steady high output at the tell tale. You have good water circulation