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1989 Mercury Black Max

captainjohn

New member
I am looking to buy a 21'

I am looking to buy a 21' Chris Craft that has a 1989 Mercury 150 Black max. Tech. is going to run engine this week during survey. Does anyone have any ideas on what I should be looking at/for in this motor? Compression? Steering? Seller says it has 400 hours. Anyone have any thoughts?
 
"Compression for sure. Plugs t

"Compression for sure. Plugs to see whether it's dry, oily, or carboned.
Check the lower unit for oil color. Milky implies mixture with water. Want to know why?
Carburator and fuel pump can be checked later once you own it.

Alex"
 
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