Fuel System 40 HP Suzuki

tauthement

Recruit
Joined
Nov 24, 2005
Messages
4
1987 40 HP Suzuki. When running, fuel bulb shrinks(vacuum). I replaced fuel bulb and have same result. I have tried with vent open and closed on fuel tank. Any suggestion?
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,762
Re: Fuel System 40 HP Suzuki

The pickup in the tank is probably clogged with debris. The engine is trying to suck fuel through the line and with a clog between the tank and the bulb, the bulb gets sucked flat.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,762
Re: Fuel System 40 HP Suzuki

Try running with the filler cap opened slightly. If the problem goes away, the vent may still be plugged even if you have it turned open.
 

Jan Z

Seaman Apprentice
Joined
Sep 15, 2005
Messages
49
Re: Fuel System 40 HP Suzuki

Then you have a clog between the pickup in the fuel tank and the bulb
 

tauthement

Recruit
Joined
Nov 24, 2005
Messages
4
Re: Fuel System 40 HP Suzuki

Screen inside of gas tank fuel line was clogged. Ran great after cleaning. But only three redfish caught!
 
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