Hi,<br /><br />I'm about to buy a +/- 25 year old, 115hp V4 Evinrude. the model is a light blue and gray one... (sounds like my girlfriend when I asked her what car she bought: "a green one." no kidding!)<br /><br />I am buying the engine of a dealer. Now ofcourse he says it's a good engine, and that it's ready to go. I saw it and indeed inside and out it looks great. Original state, not cleaned but clean! I will try include into the price a new impellor, new shaft oil, and at least 2 months warranty. Next to that I will do a compression test. And try to find out its history and what the dealer has done to it. I will try to get the exact year but maybe the info so far is enough for some to help me out.<br /><br />Because what i'd like to know is, what is your opinion on the engine itself is it a good one? Is there more I could and should do? I'm planning on making a few runs when I bought it and then check the shaft oil for: water = milky and for steel shavings/debris. And then very important what should the compression test results be like and is the following the right procedure?<br /><br />Quote: 'Warm the engine, then shut it down and remove all the spark plugs. Crank the engine, recording each cylinder's reading. Compare the results with the specifications listed in the repair manual. (don't have one yet) As for the data you'll get, if readings are low on adjoining cylinders, it usually indicates a leaking head gasket. squirt about an ounce of oil into any cylinder that reads low, than crank through several revolutions. Test again. If the readings climb higher the rings are worn. otherwise, the valves aren't sealing." quoted from Tim Banse.<br /><br />I hope I'm on the right track here this being my start to boating... And that there is some more advise for me out there! thanks for your time and input!<br /><br />Jan-Jaap Boor