78 SeaRay 30' Twin 350 Mercruiser Inboards--Can't get more than 2500 RPM
Just purchased, engines less than 60 hours on short blocks, run smooth as silk in neutral and at dock. Under load both bog down at 2500 RPM. Have drained and replaced fuel, fuel filters clean, new distributor cap on one (center pin missing). Two questions--(1)is firing order same on both (understand one counterrotates)? (2) What next in troubleshooting.