73 Johnson 6 HP Starting problems

[LIGHTFOOT]

I have a 1973 Johnson 6 hp that will only start at full throttle and with the choke on. Even when its warm it must be started at full throttle (just don't need the choke). When I bought this engine this spring, it didn't have that problem but has become progessively worse. Any ideas that will help me cure this problem? Thanks!

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Larry

 

[freddyray21]

Re: 73 Johnson 6 HP Starting problems

a carb cleaning and rebuild. You may try running some sea foam through the tank and see if that will clean out the carb.

 

[lyncraft_mechanic]

Re: 73 Johnson 6 HP Starting problems

have you checked your compression? what do your spark plugs look like?

 

[Shizzy]

Re: 73 Johnson 6 HP Starting problems

My 65 Johnson 6 HP was the same way. I bought it mid summer and it got progressivly worse the more I ran it. I went through the carb, new set of plugs and replaced the points and now it runs just fine. 1-2 pulls with the throttle just a hair past start.

 

[LIGHTFOOT]

Re: 73 Johnson 6 HP Starting problems

Thanks for the suggestions guys!