gas tank line
- Thread starter Connor
- Start date
Russ Johnson
Equipment Expert
You should have no problems at all. It may take a bit to re-prime if you run out, so a boat type bulb in the line would help.
Sirocco Jerry
Active member
horizontal runs are about the flow restriction in the hose.
Vertical lift is about suction.
..As long as you don't require more suction ("lift") than the pump can provide,
you can fuel the engine.
but..
If you run long enough a horizontal line, you just need to go larger inside diameter, to fuel that motor.
Picture this.. if you had a 2" i.d. hose, the fuel would flow horizontally from San Diego to Miami. (..relatively speaking.)
Try to Lift just 6" too high, no matter how "big" the fuel hose.. the pump just can't overcome gravity.
Vertical lift is about suction.
..As long as you don't require more suction ("lift") than the pump can provide,
you can fuel the engine.
but..
If you run long enough a horizontal line, you just need to go larger inside diameter, to fuel that motor.
Picture this.. if you had a 2" i.d. hose, the fuel would flow horizontally from San Diego to Miami. (..relatively speaking.)
Try to Lift just 6" too high, no matter how "big" the fuel hose.. the pump just can't overcome gravity.
Clean County PW
Active member
Jerry so how high can let's say a Kohler 34hp draw the gas upward? Also once the gas gets to the engine doesn't it usually stay primed on these small engines?
I'm soon to be installing on my flatbed the PW I bought from one of the members here. The picture is in this link http://www.propowerwash.com/board/upload/showthread.php?24477-OOPS-I-Did-It-Again If you look at the first pic the gas line is running upwards about 3ft. Do you see any problems with that lift?
Sirocco Jerry
Active member
I've run engines from belly-tanks under flat-beds many times.
Until recently, I would have said.. they can draw up 4 ft. no problem, but..
as we started building those totally-cool vertical-style systems,
and 2 of my customers have had issues drawing fuel up from only 3 ft..
I have to say this..
Manufacturers constantly take things that work REAL-well, ..and make them "less expensive"..
aka.. cheaper materials, cheesier workmanship, .. yeah.. all that.
So..
.. if those little black fuel pumps all the motor makers have been using for the past 5 or 6 years are getting wimpier,
I'm gouing to have to recommend upgrading to the old-style.. the Mikuni aluminum version.
or, a Purolator (Mr. Gasket) electric fuel pump..
the low-pressure version, WITH the fuel-pressure regulator for insurance..
You'll be glad you did.
Until recently, I would have said.. they can draw up 4 ft. no problem, but..
as we started building those totally-cool vertical-style systems,
and 2 of my customers have had issues drawing fuel up from only 3 ft..
I have to say this..
Manufacturers constantly take things that work REAL-well, ..and make them "less expensive"..
aka.. cheaper materials, cheesier workmanship, .. yeah.. all that.
So..
.. if those little black fuel pumps all the motor makers have been using for the past 5 or 6 years are getting wimpier,
I'm gouing to have to recommend upgrading to the old-style.. the Mikuni aluminum version.
or, a Purolator (Mr. Gasket) electric fuel pump..
the low-pressure version, WITH the fuel-pressure regulator for insurance..
You'll be glad you did.
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