hello all , i have this motor that was givin to me , been sitting 2 yrs , i tried to crank it , starter solonoid is bad , jumped straight to starter it turns over , has fire but wont start . where do i go from there ? noticed oil coming out of the prop that seal is bad,i know to change water pump . i want to here it at least try to fire before i spend a bunch of money on it / thanks for the help in advance Tim

Start with a compression test to see if all cylinders are even, if ok then probably will need to remove and clean carbs and fuel system.

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On any engine that has been setting, a carb clean and rebuild is mandatory in my book. If fuel was left in carbs the fuel will evaporate and leave the oil residue behind forming a hard gum/varnish. Here is what I would do before investing any monies in motor.
(1) Check compression on all 6 cylinders, it should be 100psi or higher. All cylinders should be within 10 psi of each other, if OK proceed to step 2
(2) Check all 6 cylinders for proper spark, that ignition system should be able to a 3/8 air gap and be bright blue,if not check ignition system
(3) Check lower unit for water and excess metal particles in oil
(4) Remove carbs and clean/rebuild each
(5) Replace fuel pump diaphram and any degraded or stiff fuel lines
(6) Replace impeller

Is this motor is a 115 ? the title says 140 so i was going by it! The boat is a 77 and the title says the motor is a 1979 140 hp , dont know ? going to check compression today and go from there / Thanks