I bought a small boat that came with a 20 horse 1972 chrysler outboard. I got a really good deal on the boat and motor, with the understanding that the motor did run last time it was used, 7 years before. I went over the entire motor, as much as I knew and found online. I can't get the thing to start. I have cleaned carburetor, replaced impeller, lower end lube, replaced fuel and fuel line, cleaned points, etc. etc. I have good spark, good compression, and I am getting fuel to the carburetor, but it will not start. When pulling the starting rope, it is very difficult to pull when the plugs are in, easy when they are out. Anyone have any ideas before I take this to someone who knows way more than I do about these things. I don't want to spend a pile of money on something I really got for next to nothing, but it would be nice to have for my son and I to use on the river.