Slight fuel leak -do I need to bleed after fixing?

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Michael Angier

I have a 1989 Yanmar 2GM20F in my Hunter Legend 335. There is a very slight fuel leak coming from the front bleed screw. It appears that the brass washer needs to be replaced. If I do this, will I likely need to bleed the entire system? Never done that before. Thanks.
 
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Miles

Probably not...

If you just replace the washer you can probably just bleed the filter with a push or two on the fuel pump lever. Chances are you won't get any air further into the system. It's pretty easy to strip out the hole for the bleeder screw by overtightening so don't get too crazy with it. Have fun!
 
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Alain Jacques

fuel leak, from the front bleed screw

Hi Micheal, I did replace the brass washer this summer, on my 1989 Yanmar 2GM20F. I didn't have to bleed the system. On my engine, the bleed screw is located higher than the injection point. Alain Jacques
 
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Steve O.

no, but...

You need to learn how to bleed the fuel line, because when it's blowing like stink and your engine won't start, that ain't the time to learn!
 
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Chris McLoughlin

I agree. . .

You probably will not need to bleed the system after replacing the washer. But as a diesel owner it is something you should know how to do. Chris s/v Tidesong
 
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Michael Angier

Thanks to you all for your help

Thanks, folks. Much appreciated. And I WILL learn how to bleed my fuel system. Just didn't want to have to do it today.
 
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Bill O'Donovan

One more thing

If the bleed screw continues to leak, try white plumber tape on the screws to stanch the leak. Just be sure to turn off the fuel petcock at back beforehand, and use a plastic syringe to refill through the bleed screw opening before retightening. Also might check the fuel hose and fuel pump for leaks. They tend to become loose. These are on the starboard side, near the oil dipstick.
 
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