outboard engine trouble shooting | Outboard Motor Oil

Troubleshooting Johnson Outboard Engine

Wear and tear occurs with any piece of seaworthy equipment, even equipment made by Johnson. Troubleshooting a Johnson outboard engine is fairly simple. Start by checking the fuel tank for low fuel, broken or damaged lines, and test the rubber fuel primer bulb for hardness.

If that all checks out, then take a look at the motor’s spark plugs for corrosion or buildup. Replace any dirty or damaged parts. Run a compression pressure check; any reading below 60 PSI means that you should hire a mechanic because you have larger problems. Of course, replacing the oil with Evinrude Johnson 2 stroke outboard oil is an excellent means of keeping your engine in working order.

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Troubleshooting a Two-Stroke Outboard Engine, Part 2

Yesterday, we left off with checking and fixing ignition wiring. Once you’re confident that there are no lingering wiring problems, turn the engine on and listen for the engine turning over, and failing that, clicking. Turn off the engine and locate the starter mechanism or solenoid if there isn’t an engine starter.

Tap the starter or solenoid with a screwdriver handle, and then try the ignition again. Next, pull the spark plug cap off and use a socket wrench to pull out the spark plug. If the spark plug is covered in gunk, replace the old spark plug, and add in new synthetic 2 stroke outboard oil. Finally check the fuel tank, vent, and fuel line for leaks.

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