1987 Johnson 9.9 starting problems

[18noltc04]

I have recently bought a Johnson 9.9, 2 stroke 1987 outboard motor and I have had trouble getting it to run. I had it running for about 5 seconds everytime I would prime it, and pull the starter cord. This made me think that my issue is fuel related and that the engine isn't getting enough fuel, so I bought and installed fuel pump repair kit. Now it won't even start. I know that there is spark and I know that there is good fuel flow from the gas tank, through the fuel pump and to the carburetor. Any ideas what the problem is???

 

[jrs_diesel]

What is your starting procedure? With a cold engine, pump the primer bulb until firm, pull choke out, set throttle about halfway, and then crank it. Should start in 1 - 3 pulls of the rope. After starting you may have to feather the choke and bring the throttle down to let it fast idle. Just depends, each motor is slightly different when running cold. On my 86 9.9, once running I can push my choke all the way back in and just bring the idle down to normal and let it warm up

If yours won't start following that procedure, then likely your carb is gummed up, especially if it was stored with fuel left in it. Get some carb cleaner, and order a carb kit for your engine, and then remove and clean out your carb thoroughly.

Fuel pumps don't often go bad. And with a clean carb, the bowl holds enough fuel to idle for about a minute or longer before it goes dry.

 

[scout-j-m]

If you prime the bulb until hard, the carb bowl should be full and contain enough fuel for the engine to fun for a good while on just what's in there. So even if the fuel pump was bad you would still be able to start and run the motor for at least a minute or so at idle speed or slightly above.

 

[oldboat1]

good spark is measured -- half an inch using an adjustable open air tester. Compression should be around 120 lbs for each cylinder, using a screw in tester (often and rent one). You will need a new impeller to be safe. Mix is 50:1.

 

[18noltc04]

OK thank you all so much for your advice!