I've got an '87 Mercury 100 hp outboard that seems to rev nicely out of the water, but in the water at WOT, it's puting out about 1/3 of the expected power. <br /><br />The compression has been checked, the fuel pump was recently replaced by the P.O., carbs cleaned (they were a mess!), new prop, at least one of the inline fuel filters is clean (the other is more difficult to get to so I haven't checked it yet...is it typical for only one of the two filters to be clogged?). <br /><br />I have the manual and it talks about an accelerator pump and something called 2+2 which kicks in the other two of the four cylinders when more power is needed?!?! Is it possible this is not happening?<br /><br />Some of the linkage pieces on the side of the motor have been replaced, but as I said it revs up fine when out of the water.<br /><br />Sorry about the long post but every time I think I found what "Must be the problem", I get it in the water and No Joy...<br /><br />Thanks<br />Cam
