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 Post subject: Fuel leak
PostPosted: Sat Jul 21, 2012 11:26 am 
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1098cc
1098cc
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Joined: Mon Apr 06, 2009 9:02 am
Posts: 1233
Location: Sandy Bay, Tasmania
Hi all,
My carby has recently been leaking a bit of fuel into the engine while stationary. I've been parking with the nose uphill to combat the problem, but if I park nose downhill, the engine is hard to start, as it will splutter and carry on due to the excess fuel. There has been petrol dripping from the carby too, but it's hard to tell where from.

The float bowl and valve still look good and are at the right level. What else stops the fuel from running into the carb? I'm trying to figure this out, because if there is nothing else, when the fuel in the float bowl drops the valve will open and let more fuel in Does anything actually stop the fuel from running in?


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 Post subject: Fuel spill.
PostPosted: Sat Jul 21, 2012 6:54 pm 
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1275cc
1275cc

Joined: Thu Dec 09, 2004 6:57 am
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Location: JIMBOOMBA QLD.
Is the carby lower than the fuel tanks ? It can only do this if it was lower and flows by gravity. Suer the needle and seat are doing their job?

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 Post subject:
PostPosted: Sat Jul 21, 2012 8:13 pm 
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Joined: Wed Sep 08, 2004 9:27 pm
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Location: Wodonga - Vic/NSW border
you have a mechanical fuel pump, right?

I bet the needle and seat are crook, but the float level looks good because you look at it with the engine not running, therefore the fuel pump is not pumping and overflowing the float bowl

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 Post subject:
PostPosted: Sun Jul 22, 2012 1:08 am 
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1098cc
1098cc
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Joined: Mon Apr 06, 2009 9:02 am
Posts: 1233
Location: Sandy Bay, Tasmania
I think I'll replace the needle and seat, purely because that's all I can think of. If I park nose down, the tank is higher which I imagine is the problem, but surely they didn't do this from the factory.

If the float bowl is empty, is there anything to stop more fuel from coming in? Because the float bowl will empty with time, and then the valve will open right?

Electric fuel pump, btw. It's mounted pretty high, in the engine bay. Do you think mounting it lower will help? When set to accessories, the pump will crank over a few times and stop when the bowl is full.


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 Post subject:
PostPosted: Sun Jul 22, 2012 7:46 am 
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998cc
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Joined: Thu Apr 17, 2008 10:17 pm
Posts: 527
Location: On the edge of "The Shire" NSW
Mine does not have the accessories option however your the fuel pump should not be active when the key is turned to this position. I would advise you to change your wiring to reflect this.

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