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25.05.2021 10:04:21
What do you do when your two or four stroke engine is flooded? First off, don’t panic. A flooded outboard motor is relatively easy to fix. It just takes a little patience and know-how to get your to turn over. here
See full version: How to start a 2 stroke outboard a stand
What do you do when your two or four stroke engine is flooded? First off, don’t panic. A flooded outboard motor is relatively easy to fix. It just takes a little patience and know-how to get your to turn over. here
Begin by pushing the choke to on and then turn the ignition switch. Next, bring the throttle to neutral then gradually to full and open. Pull the choke off, turn the ignition, and then crank the engine. Pull the throttle back to neutral and repeat the cycle until the engine is drained. When you get the chance, take a look at your engine on dry land, and add Johnson outboard oil if necessary. [links]
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Usually, with a flooded outboard, time is your friend. If the engine’s flooded, wait for five minutes, then try to clear-flood start it. Regardless of the cause of the flooding, the clear-flood start works, even if you must repeat the process several times. This gives any excess gas trapped in the carburetor or, in the case of fuel-injected engines, the injectors, time to evaporate. [links]
A flooded outboard not only makes you uncomfortable for a moment, it might mean you need a mechanic when you return to shore. In fuel-injected outboards, the excess gas that causes flooding might result from leaking injectors, failed engine temperature sensors or a failed electronic control module, the engine’s on-board computer that controls engine operation. If the problem persists, a trip to your mechanic is in order.
When you turn your outboard motor’s ignition key and it won’t start, then smell that stink of excess gas that indicates your outboard’s flooded, your heart might sink a bit, as if abandoned at a party by a friend who’s borrowed your car. Whether your outboard has a carburetor or fuel injection, shift to neutral, hold the throttle wide open and crank the engine. Called a “clear-flood start,” this can start your flooded outboard.
If your engine is equipped with a carburetor, moving the throttle to the wide-open throttle position -- or to the clear-throttle position, if your throttle is so designed -- opens the throttle plates inside the carburetor fully, allowing the free passage of air into the carburetor. If you have a fuel-injected engine, cranking your engine while at wide-open throttle notifies the engine's electronic control module to enter the clear-flood mode and withhold fuel, but not air, from the engine. This "excess air" then combines with and burns away the excess gas that flooded the engine.
An outboard floods when there's too much gas in the air-fuel mixture. The mix becomes so rich it won't burn. This might happen if you don't disengage the choke fully, if your outboard has low compression in one or more cylinders, if the engine's sensors fail or because a bit of gas -- more than can evaporate before you try to start it again -- continues to flow after you turn off your engine.
Just bought a recon. Mariner 30 which ran for 2 hours on Sunday as sweet as a packet of Smarties. Wanted to flush-out the sea-water on Sunday evening and it wouldn't even cough. Same again Monday eve. so checked for a spark and also the plugs were wet. Figure it must be 'flooded' then, but what's the quickest way of 'un-flooding' it? Would have thought a days rest and many pulls with the choke out (and in) would have cleared it? Also thought any tips would be useful to know if I'm re-starting it on the water and it's flooded again. Is it the carb or the engine that's flooded? [links]
Having taken my Yanmar 9.8 outboard home layed down in my estate car, the cylinder(s) filled with oil and 'hydrauliced" when we triad to start it. So the next time I stood it upright and tied it to the passenger seat, which was not particularly satisfactory.
I have seen an outboard carried on a cycle carrier with a small panel of ply attached to allow the motor to be attached by its clamps here
Are there any suggestions on the best way to transport an outboard in a car? more