89 40hp johnson has no power and only runs when choked
i just got a 89 bass tracker with a 40 hp johnson it will start but wont stay running unless chocked. it sat for about 3 yrs new tanks and line a freshly rebuilt carbs. it is oil injected it used to run at about 20-23 knotts and pull a tube but now wont even break 10 it sounds like it doesn't get up in rpms when in gear but in neutral will rev all the way. could it be a lower unit prob or is it pistons? any ideas. before i tear it down.
Last edited by JB; July 21st, 2008 at 05:50 PM.
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Re: 89 40hp johnson has no power and only runs when choked
I completly agree with JB. I just picked up an 87 Johnson 40hp that sat for 3 - 4 years. Mine had the EXACT symptoms you described. After a trip to the shop and 300 bucks later the motor runs fine. They had to clean the carbs twice to get all the junk out of them.