Hi I'm new to the boating world and own a aliminium runabout with 1972 Evinrude 25 engine. After reading this forum and taking my family to the coast for Christmas with an untried engine I thought it would make practical sense to change the water pump impeller. The job was relatively easy except I found a broken bolt between the main and extention housing (head held in by loctite) Grrr. Hit the water and engine ran beautifully but at end of session there was a noticable residue of oil (black) on transom below water level. There is also a degree of oily "sludge" coming out a small hole on the lower leg when the boat is left sit. Gearbox oil is clean with no water. There was half a tank of existing fuel in the tank which I topped up and added good oil at 50:1. The economy on this thing shocked me as well with an hours running using a good 9 litres of fuel (mainly at below planing speed) The engine has a rich / lean low speed control, maybe this isn't adjusted properly? <br /><br />What gives?? Have I somehow screwed up the impeller change or is there another explanation? Of course I don't know if the engine did this before the work because I didn't have it on the water (2 hours drive)<br /><br />Thanks in advance<br /><br />Glenn<br /><br />Canberra Australia
