John,
You're not going to get 'one' right answer on this question. Fuel
delivery is configured at least a half dozen ways on as a result of much
experimentation. Some use electronic pump (4-6lb). Some use the
diaphram pump. Some use both. Some add a regulator in-line with the
electric pump. Some cars have a surge tank. I think part of the reason
some systems work better than ohters has to do with the pickup location
in the fuel cell. Most of the snowmobiles just have the diaphram pump.
That's what I've used for the past 4 years that I've been running the
Rotax engines. No electric pump. No regulator. No surge tank. I'm happy
with the way it works and the simplicity. Maybe I've just been lucky.
-Jeff B.
John Vriesinga wrote:
I've got an electric pulse pump that is nearly new and a
mechanical/vacuum pump. It strikes me as being a bit overkill. Could I
rely on just the electric pulse pump if I took out the mechanical? Or
is there some problem with over pressure with these like I think I
read somewhere?
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