Fuel Guage and Full scale reading

[Conrad]

I recently added an electric fuel pump to my rig back near the gas tank. While under there, I re-terminated the ground lead from my fuel sending unit.  I made sure that all was clean (no corrosion) and cleand the frame where I screwed in the ground lead.  Made a difference in my full tank readings.  Now my guage goes way past the F mark.  Before it would just go to the mark.

My guess is that the added electrical resistance due to the corrosion I found made for erroneous readings.  

I always gassed up when below 1/4 tank.  Now I can go farther before re-filling.  btw $2.65 at Costco today.

[Rodney]

Which tank to you have Conrad?
Are you planning on running the electric pump all of the time or?
Which pump did you use?
I am considering doing the same but not sure which way to go.
Rodney

[Conrad]

I have the 35 gallon tank.

I installed a SPST switch on my dash next to the cig lighter.  I can hear it running when switched on.  I only run it prior to start up then shut it off.  Makes for a much faster start and not buring up my starter

The pump is rated for motorhome, I think.  There were two types when I looked in the store.    I will have to get under and check the label to be sure.

I mounted it on the transverse frame member just aft of the tank near the sending unit.  The transverse member is not the same guage as the chassis rails.  It is a thinner guage metal.  

I replaced my hoses and clamps at the same time.  I found that the ring clamps work pretty good (the kind that you squeeze to expand, single or double wire).  They don't crush the hose like the hose clamps do.  I have found that the hose clamps seem more appropriate for larger diameter hoses, 1" or more.

[Rodney]

That was one reason I was considering an electic pump {hard starting} but after I replaced the old thermoquad with and Edelbrock, the ol' 440 starts on the first kick    .
When I do use hose clamps for fuel I like the spring type as well.. they don't work loose and always has tension on the hose. BUT any time I can I plumb with steel line and fittings then, it's done for good.
Rodney.