1985 Johnson V6 150 Idle Mixture

[BJM]

A friend just bought a boat with a 1985 150 VRO Johnson motor. It runs okay at cruise and WOT but idles badly. It definitely sounds lean, it shakes and misses. <br /><br />We looked at the carbs pretty closely but there does not seem to be any idle mixture screws anywhere. We took the airbox cover off and the only thing I could see was a narrow brass tube in each of the carb barrels. I couldn't see down them to know if there was a tiny screw buried in them or not.<br /><br />The outside of each of the carbs have some tiny sealed plugs in them, would they be in there?<br /><br />TI***

 

[almost retired again]

Re: 1985 Johnson V6 150 Idle Mixture

Hello BJM,<br />The carbs on your 150 have fixed jets. You can take them off, take them apart and clean, or rebuild them, But no adjustments. If I was you I would get a manual do timming and sync & link and see if that didn't cure the problem, if not then do the carbs.<br />Good luck

 

[BJM]

Re: 1985 Johnson V6 150 Idle Mixture

I thought only cars would have fixed jets.<br /><br />The carbs on this motor all glisten with what I assume is fuel too. Maybe the carbs need going through.