Is the motor mounted too high? this might cause these conditions?
Go to sterndrives .com they would be able to help you and theres lots of stuff there to read,good luck john
Head gasket or manifold leaking,whens the last time you changed the manifold?
depends on tstat temp.
sounds like one wire in wrong location
Check the gimble bearing,This bearing go bad alot and can cause noise.Theres a zerk on the transom plate that will allow grease to get into this...
The motors are on a twin stainless marine bracket,Standard spacing 25" ? 23 pitch rapture ss,The motors are mounted up as high as possible,it...
My buddies 27 sonic was chine walking and getting dangerious at 65 mph and above,he has 2 250 efi mercs,did all the different things to try and...
I put a 3.0 Alpha 1 gen 1 into a 1966 cobia 25 ft CC #4000 redone and heres the test info :70 gallons gas, 2 adults Prop-14/1/2 x 15 Michigan ss....
I saw a set on ebay used for 2000 a while back,check there for your best prices.
25 percent plus drag from piston 5-10%.It will be a diffrence in plaining and not planing in most boats with the 3.0,if these problems in spark...
Whats your rpms at full throttle,bottom condition,drive ratio,prop currently? a 15x15,or 15x17 would be a good starting place.
Go to sterndrives.com-pin tool 17.85 (91-78310),im not sure what the other part costs,if your sending unit wires are worn nows the time to replace...
