1989 88HP bogs down & stalls above 3000 RPM

Old No 7

Petty Officer 2nd Class
Joined
Jun 8, 2004
Messages
104
I have a 1989 88HP Johnson that runs fine at idle and low speed. When I give it gas, it runs great fow a few minutes, then it bogs down and stalls. If I play with the throttle when it starts to bog down, sometimes I can prevent it from stalling, but not all the time. It always starts right up immediately after it stalls.<br /><br />The motor can be hard starting when cold.<br /><br />I have changed the plugs and wires, De-Carbed the engine, and made sure the gas mixture is 50 to 1.<br />I thought the choke linkage might have come loose, but it looks OK.<br /><br />Any help would be very much appreciated. This is my first boat, and I only was able to get it running enough to put it in the water this past weekend!
 

rwise

Captain
Joined
Jul 5, 2001
Messages
3,205
Re: 1989 88HP bogs down & stalls above 3000 RPM

just a thought, but if the tank has a vent on the cap be sure it is open. sound fuel related, as in not keeping enuf in the carb/s. If you (or someone with you) pumps the primer bulb will it stay running. check feul filter/s, water traps, fuel lines, fitting/s, fuel pump. Good luck!
 

Old No 7

Petty Officer 2nd Class
Joined
Jun 8, 2004
Messages
104
Re: 1989 88HP bogs down & stalls above 3000 RPM

Hi,<br /><br />The boat has a permanent tank with a permanent vent. We did check the primer bulb when this was happening, and it was hard. Pumping it did nothing.<br /><br />Could this be tied to being hard starting when cold? Once it is warmed up, it starts right up. <br /><br />Thanks!
 

Old No 7

Petty Officer 2nd Class
Joined
Jun 8, 2004
Messages
104
Re: 1989 88HP bogs down & stalls above 3000 RPM

I think I need the help of a good mechanic. After all the help this board has been to me, I would like to return the favor and use someone who either sponsors the board or who gives their time to it.<br /><br />Can anyone recommend a person or company the works in the East Islip NY area??<br /><br />Thanks, Mike
 

rwise

Captain
Joined
Jul 5, 2001
Messages
3,205
Re: 1989 88HP bogs down & stalls above 3000 RPM

use the "edit post" on your first in this thread and add the modle number, you may get more responces. Still sound as if its running out of fuel in the carb/s.
 
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