1976 85 johnson has oil leaking out of carb

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Petty Officer 1st Class
Joined
Jun 29, 2004
Messages
368
Re: 1976 85 johnson has oil leaking out of carb

I had heard of boiling carb when I was a kid, long time ago. I think back then they must not have had the good cleaners that they have today. Get a can of carb cleaner and do it right, make sure all the passages are open with compressed air.
 

smitty_bb

Cadet
Joined
Jul 16, 2007
Messages
23
Re: 1976 85 johnson has oil leaking out of carb

I ran the boat last night and it seemed to run alot better, both smother and faster. all I did was the de-carb and run Seafoam, I ordered a carb rebuild kit because its still leaking oil from the carbs. do you think rebuilding them will fix the leak?
 

smitty_bb

Cadet
Joined
Jul 16, 2007
Messages
23
Re: 1976 85 johnson has oil leaking out of carb

I was also wondering, My boat doesn't have a tach, is there any way to know when I'm starting to "red line", or what is to much throttle?
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: 1976 85 johnson has oil leaking out of carb

Rebuilding the carburetor float valves should stop the leak if your reeds are OK.
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: 1976 85 johnson has oil leaking out of carb

If you can get a OMC/BRP or Teleflex Tach with a 6P setting, the gray pre-wired sender wire is folded over and taped in the control. It connects to post 7 on the engines terminal block.
 

smitty_bb

Cadet
Joined
Jul 16, 2007
Messages
23
Re: 1976 85 johnson has oil leaking out of carb

The tach thats in the boat is a Teleflex, can I just run a wire from it to post 7 ?
 

smitty_bb

Cadet
Joined
Jul 16, 2007
Messages
23
Re: 1976 85 johnson has oil leaking out of carb

The boat has a Teleflex tach on it, its just not wired up. Could I just run a wire from it to post 7 on the engines terminal block
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: 1976 85 johnson has oil leaking out of carb

Yes, just run from the gray wire connection on the terminal block to the "S" post and connect the black ground and the red positive. The + and - should come from the ignition switch so that the gauge is off when the ignition is off.
 
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