Assuming that cables etc. check out as suggested above by j. mccreight, I would next remove starter and have it bench tested (free at autoparts store). Similar problem that I and several others here have had and best described as 'slow start when hot' turned out to be the starter on mine at least. My setup was also a very clean boat/bilge and I didn't really think the cables were the issue, solenoid had been previously replaced. Removed starter, it didn't look bad at all, no rust, had it bench tested and it failed. It always started easily when cold, but a couple times when I turned it off, after a couple runs, it darned near left me stranded as it was barely able to turn the motor over.
1988 Tristar 190 Sport, 351W w/GT-40's, 1:1 Velvetdrive
Last edited by MikeyOrange88; 09-25-2013 at 11:01 PM.