Re: 80’s/90’s 50hp opinions?

[Don]

Listen to Dan! Do the compression test of course, but good/even readings are not a great indicator of internal conditions on these loop scavenged engines. Dan’s fade away idle/hard start hot is surely cause for concern about oversize cylinder bores and worn piston skirts. Needless to say, there are many other causes for this symptom, but worn internals should be strongly considered when evaluating a used engine for purchase. The only other thing I will add is that this symptom will not be very evident while running the engine on a flushette, it needs to be on the boat in the water and in gear to experience this.