Alarms on a 1989 Johnson GT 100

[tlocus73]

Hi,
I'm getting 2 different alarms on my outboard:

First is a intermittent alarm occurs anytime (idle and up) and seems to be beep faster or slower depending on speed (faster the speed faster beep, when lower, slower beep).

Second is a constant alarm that occurs only at or above 4,000 rpm (5,000 rpm max on this engine)

These are the things that have been done:

-New Vro pump and new pulse fitting.
-completely cleaned out external oil reservoir tank and cleaned the screen. And added new/clean oil.
-replaced oil line to engine
-gas lines where replaced around 5 years ago
-new fuel filter
-new thermostats
-water pump was replaced 2.5-3 years ago. has very good stream.
-gas tanks where replaced 5 years ago.
-new bulbs for fuel and oil.

thomas

 

[HighTrim]

Re: Alarms on a 1989 Johnson GT 100

The alarm at higher RPM is the fuel restriction warning. Will pumping the primer bulb cause it to stop? No air leaks in any fuel lines?

I would probably start by ensuring that the vent on the fuel tank is open and free of debris. Also inspect the anti syphon valve, they are known for sticking in a semi closed position.

 

[tlocus73]

Re: Alarms on a 1989 Johnson GT 100

Thanks for the reply,
I'll try pumping the fuel bulb.
Where can I find the anti syphon valve?

 

[HighTrim]

Re: Alarms on a 1989 Johnson GT 100

The valve is right at the built in tank where the fitting attaches to the rubber fuel line. It is made of aluminum and is a couple inches long. Take it off, remove the ball, seat and spring from inside of it the reinistall and see if it cures your problem.

 

[tlocus73]

Re: Alarms on a 1989 Johnson GT 100

HighTrim,
I'll try these out.

Is there also a throttle position sensor on my engine (and could this be a problem). I have a manual that mentioned it but couldn't find more info on it.

t