i have twin merc 135 1992 carburated. problem is under load port engine max rpm is 2200 under full throttle. i replaced the stator/ get good spark at each cyl/ compression 130 each/ gas is clean no water/ linkage is correct/ advance spark is by book/ carbs seem clean and i used that merc tuneup stuff in intakes at carbs/ should i be looking to rebuild carbs/ are there two fuel pumps and whats up with them / can i check output of pumps<br />any help will be appreciated<br />mike
