Mercury 2003 25ELPT 4S

by Wade keyes
(Hartselle ,Alabama)

I bought motor cheep and I ended up having to rebuild it because it had a bad rod bearing. I installed all new rod bearings and main crank bearings. I also installed new rings on the pistons. The valves were fine and passed a leak down test. The motor seems to run fine now but is blowing out the crankcase breather hose at the carburator air intake. It doesn't do it all the time e but when it occurs it gushes out of carburator air intake and makes a bad mess. I did a leakdown test on both cylinders and the seem ok but I have not done a compression check on the cylinders. Any ideas

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