Johnson 30HP runs only 1 cylinder

[tsl]

Hi,<br />I have a Johnson 30hp 2-stroke about 10 years old.<br />It's been unused for about 2 years, and now it will only run on the lower cylinder. It first ran on both cylinders about 10 minutes, but no more. It's also hard to start. I have replaced the sparc plugs, but I'm lost what more to look for. Anyone with ideas on this?<br /><br />Thanks // tsl

 

[tsl]

Re: Johnson 30HP runs only 1 cylinder

Some more info,<br />I have sparks on both plugs, but I'm not sure if the top one is powerful enough.<br />If I run the engine some time (only lower cylinder works), the top spark plug gets wet.<br />I have tried replaced the top ignition coil but no luck. I'm thinkin about the CDI box...<br /><br />/tsl

 

[The Marine Doctor]

Re: Johnson 30HP runs only 1 cylinder

Check the compression as well. No sense spending money that you do not have to on ign components.<br /><br />If comp is fine...move to the power pack.<br /><br />TMD