I have a johnson/evinrude 115hp motor that is not firing, I have removed the flywheel and cleaned the contacts and still no spark. the guy that had it before me replaced the power pack with a new one. all the grounds and connections are clean. What else could I check, and what other tests can I run?

SOURCE: car wont start

I noticed you replace the crankshaft sensor, but not the CAMshaft sensor.
The Ignition module takes the input of both sensors to tell the coil when to energize.
This sensor should come up as an error code when you attach a obd reader.
Even if your light is not on - there may be a code. If it is not your vehicle originally, some people pull the bulb!

SOURCE: rough running, erratic spark

Run a compression test on the cylinders.If reading is low on any drop a little engine oil into the pot. If compression rises you have compession ring problems. Remove all plugs before you try this and place leads away from engine.

SOURCE: Sears weedwacker won't start 358.797150

Plug could be fouled. Make sure you have fresh fuel mix.

SOURCE: 1974 Johnson 70 hp outboard, quits on acceleration.

It sounds like your motor is starving for fuel. At an idle, you have adequate flow to keep the engine running. When you call for more fuel...you sputter and quit. Could be a clogged filter or trash in the line or in a jet. Yes you will have some air in the bulb, but not a great deal. You could be sucking air at a hose connection (loosing some prime)...try this, start the engine and slowly accererate, have someone pump the bulb as you accelerate, see if the engine works properly while doing this test.

SOURCE: Simplicity Sno Away Snow Thrower Briggs 6hp engine No Spark

Check engine oil.

Remove wire from low oil sensor and the start.

Replace low oil sensor.

Hope this tip help solve your problem.

r/David