BCM Community
Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: RJ on December 11, 2015, 03:15:00 PM
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Over the years there have been discussions about adding an electric fuel pump in a parallel loop to assist in repriming our two-strokes should we run into that unfortunate predicament.
In reading threads recently here and on other forums, it's been noted that some of these electric pumps are much better at "pushing" the fuel on down the line than they are at "sucking" it over longer distances. Think of it as the difference between mounting one right at the fuel tank vs in the engine compartment itself.
For the project I have in mind, I'd prefer one that's better at "pushing" fuel (not water!) - any suggestions? Brand and Model numbers would be very helpful. 12vdc preferred, but 24vdc would work, too.
Oh, and for the thrill seekers, no, I have NOT run out of fuel, and don't intend to, either. Learned that the hard way back in my charter days.
TIA. . .
;)
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Yo RJ!
I use a $25 12vdc pump from NAPA. It's mounted near the engine and has no problem pulling up the fuel from the tank.
Don't you have a shipment coming my way? LMK what I owe you!
Thanks,
Mark
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Here's one like I have:
http://www.ebay.com/itm/ONAN-GENERATOR-FUEL-PUMP-GAS-or-DIESEL-SAME-FIT-AS-ONAN-149-2267-ONAN-149267-/310986585433?hash=item48683eb559:g:yiQAAMXQ855Rpkqk&vxp=mtr (http://www.ebay.com/itm/Fuel-Pump-RV-Generator-Generac-Kohler-Onan-Yanmar-Gas-Diesel-2-4-PSI-12V-MD7782-/231677966127?hash=item35f115372f:g:CIQAAOxy3cJTfUKJ&vxp=mtr[url=http://This one looks really nice, but the price..... eek
This one looks really nice, but the price..... eek
[url=http://www.ebay.com/itm/ONAN-GENERATOR-FUEL-PUMP-GAS-or-DIESEL-SAME-FIT-AS-ONAN-149-2267-ONAN-149267-/310986585433?hash=item48683eb559:g:yiQAAMXQ855Rpkqk&vxp=mtr)
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I've got a 24 volt pump I got from NAPA installed right at the primary filter. I plumbed a bypass loop with the pump in it. Installed a ball valve to force the fuel through the bypass loop when using the pump. I always use it to prime the filters when I do the annual filter change.
If you text me I can send you a couple photos of the install.
612-801-4826
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Don't you have a shipment coming my way? LMK what I owe you!
Mark -
"Senior Moment" at my end. . . :'( :'(
Text me to shake out the cobwebs.
RJ
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These are designed to push or pull, fairly low pressure, extremely reliable and smooth, and designed so fuel can be pulled through them with no resistance when used as a priming pump. No need at all to plumb any kind of parallel loop, just put one in-line with the fuel line from the tank near the engine. Airtex brand. http://www.amazon.com/Airtex-E8016S-Electric-Fuel-Pump/dp/B000C1LW0E (http://www.amazon.com/Airtex-E8016S-Electric-Fuel-Pump/dp/B000C1LW0E)
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When mounted at the tank they are a lift pump lot of vehicles use a lift pump like MCI did for priming with the valves,I just mount the Airtex flo thru in line pump close to filters like Brian with a switch in the rear then there are no valves to deal with
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I use a NAPA pump, also, and pull fuel. They will push just as well. At the time, NAPA had two pumps. One was lower psi than the other. I started with that one and it just
didn't seem to get the job done, so I switched to the higher PSI. I was told not to go over 11 psi or it would damage the seals in the mechanical fuel pump. This from a well known
bus mechanic that I know and trust.
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Most pumps want a filter before it. Better to mount at engine where it is easier to service/replace if necessary. Maybe mounted between filters? Luvrbus said they will still allow fuel flow even when not running. I have a 24 volt Airtex like in picture from Ebay. Haven't installed it yet, but on the todo list.
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I installed the 24V one that Brian is showing in the picture, in line, just outside the tank near the fill door. And a switch there as well. Works really good. It has been a couple years, flow through, without problems.
JC
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Mount it before the filters. It's good to pull fuel through 30 odd feet of fuel line from the tank, but asking it to pull through a filter is just a tad iffy and serves no purpose. All it's really supposed to do is fill up the first filter/strainer and get fuel up to the mechanical fuel pump. It isn't supposed to run the engine. I suspect RJ's cryptic request has nothing to do with priming Detroit two strokes, anyway.
Brian
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A new filter shouldn't have a restriction.
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Compared to no filter? come on... Of course it does.
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An empty filter should have no restriction and a new full one should have little.....check it.
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mount it before the primary filter, either at the tank, or just as the fuel line enters the engine bay.