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Primer bulb still collapsing

J

jessielsmall

Member
"I changed all fuel lines from

"I changed all fuel lines from the fuel pick up back to the engine of my 1991 200 hp Johnson, also blew through the vent to make sure it was not clogged. I ran open throttle for about 300 yards and the buzzer started to sound. the signal for the overheat and fuel flow is the same,one continuous beep, I was able to hold my hand on each cylinder head a good 3 to 4 second and the pee was warm, so I dont think it is an over heat. I squeezed the bulb the buzz stopped then started again, because when I squeezzed the bulb, it stayed flat. I corrected it and tried again, ran another 200 yards or so and it collapsed agian on its own. I disconnected the primer bulb on the side nearest the tank, it inflated and I connected it back to the line and she brought me back in. Is there any other options, I thought with the changing of the fuel lines and making sure the tank was venting it would have taken care of the problem, any ideas."
 
There is a blockage between th

There is a blockage between the bulb and where fuel pick-up tube is in the tank.Remove your fuel pick-up tube to inspect it.
 
Sure You have a 3/8 min fuel l

Sure You have a 3/8 min fuel line and fittings all the way from tank to engine?
Are You using an original 3/8 primer bulb or aftermarket?
 
"(Fuel Anti Siphon Valve&#

"(Fuel Anti Siphon Valve)
(J. Reeves)

Many of the later OMC V/6 engines incorporate a fuel restriction warning via a vacuum device attached to the powerhead. If the engine overheats, or if you have a fuel restriction, the warning is the same.... a steady constant beep.

NOTE... Only the V/6 & V/8 engines have the above "Fuel Restriction Warning". The warning horn will not sound on the other models.

The fact that a engine is not overheating, but the warning horn sounds off with a constant steady beep, and that the rpms drop drastically would indicate that the engine is starving for fuel due to a fuel restriction. Check the built in fuel tank where the rubber fuel line attaches to the tank fitting. That fitting is in all probability a "Anti Siphon" valve which is notorious for sticking in a semi closed position. It will be aluminum, about 2" long, and the insides of it will consist of a spring, a ball, and a ball seat. If this valve exists, remove it, knock out those inner components which will convert it to a straight through fitting, then re-install it. Hopefully that cures the problem.

The above procedure will cure a restriction problem with the anti siphon valve as stated. BUT, it may also allow fuel to drain backwards to the fuel tank when the engine is not running (siphoning backwards) due to the fact that the carburetors/fuel pump etc are higher than the fuel tank. This condition is not an absolute as the valves in the fuel primer bulb usually prevent this backwards siphoning problem. However.... if this does take place, the cure would be to install a new anti siphon valve.

When time permits, visit my store at: http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store"
 
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