68 super olympique
New Member
Hey guys, looking for some advise on a nagging issue im having. Im getting a vibration and louder than normal exhaust resonating "drone." Seems somewhat normal from 5000rpm to 6000rpm, but slower or faster it gets worse. Iv had other ppl on with me that confirm im not crazy and they hear/feel it too! No codes, no beepes. Im at 210hrs, rebuilt the pump at 160hrs because the plastic housing warped. Rebuilt it with an alum housing and parts from an 08 wake. I did re use the impeller as it was in good shape. I don't remember the vibration/noise before the rebuild, so im questioning something there.. But im also wondering if a baffle in the exhaust has let go or something.. Any ideas?