sorry about that its a merc. i thought i said that but I guess not it was a long night with jack daniels last night my brain is floating today...
LMAO, been there and done that, but couldn't afford the T-shirt...
Some of the Mercury's have a separate trim pump not unlike the Mercruiser I/O's, the others have one built into the transom bracket...
What normally causes a slow movement is the cylinders get sticky, the cylinders have pistons in them have a pressure relief built into it so that if the boat hits something while under way it does not tear the transom off the boat..Once the cylinders start to seize, one of the rams bypasses a bunch of fluid and they move slow, could also be a worn out pump or a seizing pivot pin (or steering tube)...
The best way to solve the problem, if you don't want to rebuild everything, is to disconnect all of the hydraulic lines going to the rams (there are either two or three of them) and make sure the rods move freely...Sometimes a PITA...
How much the trim pump changes tone when the rams bottom out can tell you a lot too, if the tone changes very little from moving to bottoming out, the pump IMHO is probably toast....The wrong fluid can make them work like crap too....Some used non detergent 30wt oil, the other hydraulic fluid (otherwise known a Dexron ATF)...
See if you can get a model number off the motor (and serial) and I can see if I can help, otherwise a picture will help identify what you have.
GT
