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Hi,
Well that’s nice to know even though I do not own a 700 series car.
Interesting that it has only one pump where both the LH systems and K jets used two pumps. One as only a feed pump to the other.
Only the K jet had an accumulator beside the main pump but the filter was up by the engine.
The accumulator left the scene on the LH and got a larger fuel filter to act as a reservoir I would say.
I was assuming that a large filter was on 700s too.
So that device you are saying leaked.
Isn’t this a throw back to the accumulator days? I wonder why?
I’m also surprised that this car has an accumulator or even a pressure damper.
They are not exactly reciprocating pump piston involved.
The main pump in the tank has or should have, a check valve, so I don’t understand why an accumulator should consider stopping fuel also?
So hearing you can bypass it with is a fix doesn’t surprise me or at least it’s halfway.
How did you know that an accumulator was leaking internally?
To where?
I may have forgotten some of the other posts so I’m fine with what fixes this car.
As an example, On a bigger scale of hydronic systems covering many buildings, like a university or a plant operation, there’s several pumps to circulate fluids. These are at various heights and distances.
This system utilizes a lot of bladder tanks for expansion changes mainly from heat demands.
If a boiler goes off line, for any extended length of time, pipes can shrink in length and what were tight seals can start leaking into a rooms from overhead.
And That can get messy fast, Trust me!
As water shrinks during a cooling session, the running or idle pumps can have air pulled in around the shaft seals.
Pumps create suction so Cavitation is not a nice thing. We have burping valves scattered about up in the highest part of the system.
Like the radiator caps and coolant bottles on our cars.
The above is the Same as shutting down a car’s system.
Accumulators have their place but it’s interesting, to me, that this vehicle’s fuel system should need one?
It already has a fuel pressure regulator that can bleed fluid to a holding tank.
Even on the k-jets, I think the accumulator was an engineering overkill to some extent but it’s a mechanical injection with a volume distributor. (??) Someone justified it.
Constantly emitting fuel to an oxygen sensor for feedback to a “adjustment system” including a frequency valve. The mechanical equivalent of a AMM.
We shall see what happens below a half tank or less of fuel.
You might have a suction side leak on the main pumps inlet. You did say It is the only pump.
Did you ever notice differences with tank levels during this time?
Thanks for the information.
Phil
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