Hi guys,
im after some ideas because I'm all out.
Last yest when i first got my 285pro XL with a 175 merc opti I was pulling 65mph just me, half fuel and a little water in the well at 5650 rpm. I haven't changed anything in the set up and am now only getting 55mph. Trying to rectify the issue have recently changed reed Valvues, didn't see much difference, maybe 2 mph or so. Have also done al the normal servicing that you should do to keep the opti in good health. Last week I blew a compressor and thought that might have been the issue and that for a while that maybe the compressor hadn't been performing well but the brand new compressor didn't change anything. I'm still getting 5650 rpm, trim is good, water pressure is good, everything I can see tells me I shouldn't be only getting 55mph that it should be higher. I should add that when plugged into the computer, there are no faults, no issues with injectors and the motor runs smoothly as it ever has.
I also Havent hit anything in the hull, there ar no more scratches then when I got it(there are a heap but nothing that would warrant a 10mph drop in speed).
Can an anyone give me some ideas to? because I'm fresh out and frustrated.
Regards,
joe