fuel pump question

[earlandamys180]

I have the old style mechanical fuel pump which has the filter in the bowl that looks like a chunk of cinder block, I have added a inline fuel filter right out of the tank but I am having issues with build up in the filter screen at the carb inlet. I think I remember someone saying on here that the ethanol in the fuel is what breaks down the filter in the pump causing this, can I remove it and run it without this or is there a replacement filter for my pump to stop this problem? Thanks Oh its a 98 3.0 liter Mercruiser

 

[Bondo]

Re: fuel pump question

Ayuh,... You can get a paper element filter to replace the stone like filter...

 

[Fishermark]

Re: fuel pump question

I would suggest getting rid of the inline filter - most are not approved by the Coast Guard anyway - and install a water separating filter instead. I assume you do not have a water separating filter?

 

[Bondo]

Re: fuel pump question

I would suggest getting rid of the inline filter - most are not approved by the Coast Guard anyway - and install a water separating filter instead. I assume you do not have a water separating filter?

Ayuh,... I missed that Mark,... Good catch...

Put a cannister type filter in there, instead of an In-line...

 

[earlandamys180]

Re: fuel pump question

Thanks for the responses and it does not have a water separating filter I will get one of those also.

 

[Ike-110722]

Re: fuel pump question

Fishermark is right. Never use an automotive fuel system part on a boat. They do not meet the requirements for fire resistance and many use spring loaded clamps to hold them in place. Spring loaded hose clamps are not allowed. Use a marine fuel filter mounted on or near the engine, and a water separator would be good. It also sounds like your fuel pump is not a marine fuel pump either. Marine fuel pumps not only have to meet the fire resistance but they aren't allowed to leak into the boat, usually this means they have a double diaphragm or some other means to trap fuel if the diaphragm has a hole. Plus that bowls on fuel pumps are ok but they cannot be glass and have to meet the fire resistance requirement, which is why you almost never see bowls on marine fuel pumps.