I have always been worried that my fuel tank has no drain and no inspection port- this is probably the only criticism I would have of Hunter. My H42 is now 23 years old and still in absolutely Bristol condition- impresses all my mates on the marina! I recently removed the factory tank float gauge and placed a plunger type sump pump down through that hole into the tank with the tube extension 1/8" off the bottom of the tank and sucked up half a dozen pumps of diesel from the very bottom of the tank. Was delighted to find almost NO black gunk come through, so have decided to postpone the huge job of cutting in an inspection plate into the top of the tank.
What I do intend to do now though as a safety precaution is to build a simple fuel polisher, so I want to ask for advice from those with the necessary expertise in this area please. My tank has only 2 x pick ups ( 1x for the engine, 1x for the generator) and the same 2 return lines to the tank. I am planning to cut into the pick up line just immediately ahead of the tank and insert a "T" piece . Immediately before this "T" on the tank side , I plan to install an appropriately sized 12v fuel pump , then I will place 2 x filters with 2 different micron ratings ( course and fine) to polish fuel and then cut into the engine return line to return this polished fuel back to the tank. My plan is also to install an open /shut valve so I can shut of supply to the polishing filters if needed and use the 12v pump for simple bleeding in an emergency. I plan to have a separate on/off switch for this pump and will only run it as needed and only with engine running.
So - my questions are;
Is this plan viable-do I need to make any changes??
a) will this work without creating any possible problems?
b) what flow rate should I aim for with this 12v fuel pump?
c) what filters (microns) should I use?
d) any other suggestions or improvements
thanks , looking forward to knowledgeable advice!
What I do intend to do now though as a safety precaution is to build a simple fuel polisher, so I want to ask for advice from those with the necessary expertise in this area please. My tank has only 2 x pick ups ( 1x for the engine, 1x for the generator) and the same 2 return lines to the tank. I am planning to cut into the pick up line just immediately ahead of the tank and insert a "T" piece . Immediately before this "T" on the tank side , I plan to install an appropriately sized 12v fuel pump , then I will place 2 x filters with 2 different micron ratings ( course and fine) to polish fuel and then cut into the engine return line to return this polished fuel back to the tank. My plan is also to install an open /shut valve so I can shut of supply to the polishing filters if needed and use the 12v pump for simple bleeding in an emergency. I plan to have a separate on/off switch for this pump and will only run it as needed and only with engine running.
So - my questions are;
Is this plan viable-do I need to make any changes??
a) will this work without creating any possible problems?
b) what flow rate should I aim for with this 12v fuel pump?
c) what filters (microns) should I use?
d) any other suggestions or improvements
thanks , looking forward to knowledgeable advice!
