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Dual Tank Fuel Systems "Trucks/Motorhomes"
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<blockquote data-quote="Zoediak" data-source="post: 1492672" data-attributes="member: 17077"><p>I just got done dealing with fuel pump replacement in my MH... </p><p></p><p>I am going to guess that yours does not have any 'in tank' electric pumps...</p><p></p><p>my motorhome is an '88 with a 460 (ford chassis carbed - single tank)... luckily mine only needs the one in tank pump, but they did offer an aditional 'helper pump' that went inline outside of the tank for the longer rigs...</p><p></p><p>if this is something like you are trying to do, just place your electric 'helper pump' along the frame rail between the engine and where your fuel line splits to go to the seperate tanks (usually at a valve similar to what was shown).</p><p></p><p>by placing it there, it will not matter which tank you are running off.</p><p></p><p></p><p>just make sure that any inline pump that you use will supply enough fuel for your existing pump you are trying to 'help'.</p><p></p><p>also... on another note, after you add a 'helper pump' you could tachnicaly add in a fuel return line for each tank that would be controlled by one of those switches to direct the fuel back to the tank it is drawing from... just make sure the return line is smaller diameter than the supply line.. I have done that many time to help keeping 'vapor locks' away..</p><p></p><p></p><p>sorry for the long boring post... just a couple thoughts...</p></blockquote><p></p>
[QUOTE="Zoediak, post: 1492672, member: 17077"] I just got done dealing with fuel pump replacement in my MH... I am going to guess that yours does not have any 'in tank' electric pumps... my motorhome is an '88 with a 460 (ford chassis carbed - single tank)... luckily mine only needs the one in tank pump, but they did offer an aditional 'helper pump' that went inline outside of the tank for the longer rigs... if this is something like you are trying to do, just place your electric 'helper pump' along the frame rail between the engine and where your fuel line splits to go to the seperate tanks (usually at a valve similar to what was shown). by placing it there, it will not matter which tank you are running off. just make sure that any inline pump that you use will supply enough fuel for your existing pump you are trying to 'help'. also... on another note, after you add a 'helper pump' you could tachnicaly add in a fuel return line for each tank that would be controlled by one of those switches to direct the fuel back to the tank it is drawing from... just make sure the return line is smaller diameter than the supply line.. I have done that many time to help keeping 'vapor locks' away.. sorry for the long boring post... just a couple thoughts... [/QUOTE]
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