1992 Wellcraft Excel 20SX with 4.3l Volvo Penta and 290 drive.
I found milkshake oil and traced it to bad (original) risers/manifolds. Replaced those and rebuilt head because valves were rusted and stuck. Hoped for the best but low compression leads me to believe bottom end is impacted as well. Readings of 70-80 PSI jumped to 100+ after a squirt of oil in 4 of 6 cylinders.
Have changed the oil twice, it is still milky - would the bad oil be contributing to the low compression ?
Question is should I assume that entire bottom end is compromised and buy a new motor or rebuild the existing.
Bought the boat used, seems to be in OK shape but no real history to review.
Thanks for your help/suggestions.
Grodster
I found milkshake oil and traced it to bad (original) risers/manifolds. Replaced those and rebuilt head because valves were rusted and stuck. Hoped for the best but low compression leads me to believe bottom end is impacted as well. Readings of 70-80 PSI jumped to 100+ after a squirt of oil in 4 of 6 cylinders.
Have changed the oil twice, it is still milky - would the bad oil be contributing to the low compression ?
Question is should I assume that entire bottom end is compromised and buy a new motor or rebuild the existing.
Bought the boat used, seems to be in OK shape but no real history to review.
Thanks for your help/suggestions.
Grodster