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ContinuousWave: Whaler Repairs/Mods
40 hp Mariner - Carbs
|Author||Topic: 40 hp Mariner - Carbs|
posted 06-25-2002 03:30 PM ET (US)
The carbs on my 2 stroke 40 hp 4 cylinder "Magnum" engine seem to be leaking fuel.
When the engine is shut off, and the motor tilted up, fuel pours out of the carb throats until, it seems, the fuel pressure drops off. I have also been experiencing hard starting lately (when hot).
Is there a simple fix to get these two carbs to quit acting up?
Another note: I can get fuel to spray out of the carb when I squeeze the primer bulb in the fuel line...
A sticky float or stuck needle/valve or something??
posted 06-25-2002 03:38 PM ET (US)
Where does it shoot out from? Find that and you will find your leak. I will assume it is the main fuel line where it connects to the carbs or a bad fuel pump. Normally the bowl gaskets do not leak, especially both. It is hard to start because it is sucking air....not a good thing unless you want a new engine soon.
posted 06-25-2002 04:14 PM ET (US)
It is leaking right out of the carb "throat"/venturi...
posted 06-25-2002 04:25 PM ET (US)
get some Berryman's B-12 from autozone or Wal-Mart and mix it in your gas as directed. It will clear out any smudge. If no dice after about 10 gallons or so, have them looked at.
posted 06-25-2002 09:11 PM ET (US)
Toad, I suspect the float level needle valves! A good cleaning and a gasket and needle valve kit might work wonders... these are very simple carbs .... Happy Whalin'.. Clark... Spruce Creek Navy
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