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Old 03-13-2013, 07:09 PM   #3
Vic Piano
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Join Date: May 2010
Location: Odessa, FL
Posts: 7,611
Default Re: Start engine after 20 years sitting

Can you turn the engine over by hand (is it free), if so, I'd drain the crank case and change the oil filter (if so equipped), put fresh oil (I use 20/50). Pull all the plugs, cover the heads with old towels, etc., crank the engine (without the ignition on) and let the pistons push any MMO, etc, out of the plug holes. Install new spark plugs (I use Autolite 216's). I'd also disconnect the fuel line from the fuel tank, run a gas hose into a gas can and connect it to the fuel line at the tank or at the fuel pump, to be able to prime the fuel pump and carburetor. I'd crank the engine (without the ignition on) just to make sure the carburetor is getting fuel. You'll also have the check for spark, chances are the distributor points, condenser, etc. may be corroded from age. Once you have cleared the cylinders, primed the fuel system and established spark, and put water in the cooling system, you should be ready to fire it up. Good luck and enjoy it.
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