Quote:
Originally Posted by Big Yellow Tractor
Ted,
Just some thoughts.........
The fuel demand is variable but I assume your pump runs a constant pressure/flow.
As suggested by someone else, I think maybe you need a bypass to let fuel back to the tank that isn't needed by the carb. (does that make sense ??)
Where is your pump located ?
Would a "T" in the pipe just before the carb, running back to the pipe on the inlet side of the pump provide a bypass loop ?? Maybe with an adjustable restrictor.
Perhaps there is a pressure reducing valve available. I can't believe this is an isolated problem.
I will be interested in you conclusions because I have a bigger tank to fit to my Dr Zed and that has an outlet way below the carb.
As far as filters go, I have a filter bag/screen that sits in the top of the tank.
Regards
BYT
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A fuel bypass does make sense but I'm worried about making things even more complicated. A bypass could end up giving less flow to the carb than having no pump at all. Having allsorts of T-pieces, pipework, bypasses and valves sounds like a nightmare to set up and get working properly.
I remember reading on a forum something about your float valve which needs to be modded or changed but I can't for the life of me find it again.
If I can do without the pump, I will... I need to wait a week or so with the DRZ dormant and see if I get the same problem than before I changed the filter/pipes. I used to have to open the drain screw on the carb to get the fuel moving again or give a squirt of power start in the airbox to get things going.
After the bike started cutting out on my on the motorway, I stripped and cleaned the carb out and set the float a little higher which stopped the problem (for now). It still wouldnt start if left a while though. Im guessing once the fuel in the bowl evaporates, its not refilling sufficiently.
What bag/filter do you have on your tank ?? home made affair ?? Pictures ?
Have you ever had any starting , starvation problems with your tank ?? My mate has a 28L Safari (no inline filters) and has no issues at all.
__________________
Did some trips.
Rode some bikes.
Fix them for a living.
Can't say anymore.
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