Replace fuel/water separator Merc 4.3L

baylake

Seaman
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Aug 18, 2011
Messages
55
Hi,

On the box of the new fuel/water separator, it says need to release pressure from fuel line before remove the old filter. Do I need to worry about it or just remove the old filter out.

2007 Mercruiser 4.3L water cooling

Thanks
 

Don S

Honorary Moderator Emeritus
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Aug 31, 2004
Messages
62,321
Re: Replace fuel/water separator Merc 4.3L

says need to release from fuel line

Release what from fuel line?

Do you have a Mercruiser serial number handy? Is this an EFI engine?
 

baylake

Seaman
Joined
Aug 18, 2011
Messages
55
Re: Replace fuel/water separator Merc 4.3L

Sorry - release pressure from fuel line. Thanks
 

baylake

Seaman
Joined
Aug 18, 2011
Messages
55
Re: Replace fuel/water separator Merc 4.3L

Serial Number is xxxxxx. I don't know if it is EFI engine or not. How can I find that?
 

Don S

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Re: Replace fuel/water separator Merc 4.3L

You don't have EFI, you have a carburetor. Found that out with the serial number.
Don't worry about fuel line pressure, your fuel filter is on the suction side of the pump, not pressure side.
 

baylake

Seaman
Joined
Aug 18, 2011
Messages
55
Re: Replace fuel/water separator Merc 4.3L

You don't have EFI, you have a carburetor. Found that out with the serial number.
Don't worry about fuel line pressure, your fuel filter is on the suction side of the pump, not pressure side.

Thank you Don.
 
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