new in aug 07 20hrs done in sept 07 took it out yesterday ran fine for a 1/2 hour eng was at 175 temp 40+ on oil pressure at high r, knocking noise loud idles no noise at end of run r's went from 4500 to 4000 motor still under warranty but cant look at it till the 8th or 9th my question would be i told my gf that we would watch fireworks from boat any advice would be helpful thanks checked oil looks good clean and ful omc cobra stearn drive had abot i/8 tank of gas from last year put in fifty dallars made it 3/4 if that any more help
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