Johnson 1989 40 HP Won't Idle

gerrysr

Cadet
Thread starter
Joined
Aug 1, 2002
Messages
10
The engine pushes the boat (16 ft, aluminum Bass Boat at 26 MPH, 4000 RPM). <br /><br />The Model No. is J40E1 CEC SN G02338686.<br /><br />It will reach 30 MPH at 4200-4300 RPM but bogs down, but runs nicely at 4000 RPM per above.<br /><br />It will not idle more than approximately 20-30 seconds.<br /><br />I can depress the Electric Primer on the Remote Control and it will keep idling.(approx 1000 RPM)<br /><br />I can put the Manual Primer Valve to the Manual position and it will keep idling (approx. 1000 RPM) <br /><br />I havce disconnected the VRO and capped the oil inlet and am pre-mixing 87 octane Unleaded Gasoline atthe Ratio of 50::1 with Pennzoil Premium 2-cycle engine oil.<br /><br />I have the SELOC Manual but can find no Carberator that fits what is installed on my Engine.<br /><br />It is close to a Type IV, has Fixed Low and High Speed Orfices and a Needle Valve which I'm assuming is for the Intermediate Speed.<br /><br />Any advice or suggestions you may have will be greatly appreciated.<br /><br />Thank You,<br /><br />Gerry Smith
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: Johnson 1989 40 HP Won't Idle

Gerry.... You have described a fouled carburetor to a "T". Time to remove, clean, and rebuild the carburetor.
 
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