Originally Posted by half a can
I have been looking for an 87-89 Prostar for a few weeks and finally found an 89. The interior and exterior are both in immaculate shape - almost too good of shape for a 24 year old boat. The motor has just under 500 hours, and the last registration sticker is from 2005. The guy selling it has never ran the boat, he traded a truck for it and is now looking to sell the boat since he has 2 others already. He claims the boat was previously owned by a boat mechanic and was ran (with no valid registration) for a couple of weeks at the end of the season.
My question is - what should I check on the motor and tranny? I will do a test drive and a compression check. Is there anything else to look for with a boat that has been sitting for potentially 8 years? The motor and bilge were just as clean as the rest of the boat and there was no rust anywhere. I hate to pass up an oppurtunity at such a well preserved boat, but am afraid of what is in the motor with it sitting for so long. Thanks for the help.
Depending on geographical location of the boat; leaks from cracks in the engine block or heads from poor or no winterization. Salt water use from a coastal state or coastal proximity. Salt or brackish water is not my preference of legacy use. Worse case with this deal is that you drop in a new or rebuilt engine.
Look at the engine oil (on the stick) for water in the oil (crack somewhere). Look at the transmission fluid in the same way.
Magnet to check for JB Weld repairs (typically from crack repair from poor winterization). Magnet doesn't stick? Something else is there. I usually check each head for this type fake repair.
Carb performance, starting of ease or not when engine is hot. Gasket leaks. Don't pay a ton of money for a great deal. You can sink another $5K into a boat easily enough on top of the 'great deal' price if it's trashed out. All sunken costs too.
Slipping or clunky transmission performance. Smell the fluid for a burnt smell or water contamination.
On and on and on...