Advice needed 1980 380E

[Kerabo]

Well the rubber connection pipe seems to be ok.
As it only pumps from the tank when cranking it’s a bit hard to check the flow so I connected a wire from the pump and to the battery. With the feed to the CIS removed it pumps it’s mainly air and just a little fuel when I connect the pump.
The strange this is the cars owner had drained the tank and put back in 15L of clean fuel.
I would have thought 15L would have been enough to give a supply. Looking at spec reserve is about 12L?
Just a thought but is the reserve a manual switch or does it use it automatically ?
Thanks

 

[Pontoneer]

Well the rubber connection pipe seems to be ok.
As it only pumps from the tank when cranking it’s a bit hard to check the flow so I connected a wire from the pump and to the battery. With the feed to the CIS removed it pumps it’s mainly air and just a little fuel when I connect the pump.
The strange this is the cars owner had drained the tank and put back in 15L of clean fuel.
I would have thought 15L would have been enough to give a supply. Looking at spec reserve is about 12L?
Just a thought but is the reserve a manual switch or does it use it automatically ?
Thanks

The reserve is just a warning light which comes on when the fuel level reaches a certain level , there is a contact within the sender unit but there is no separate feed pipe or tap to be changed over as was the case , for example , on my Ponton .

When the tank was drained , how was this done ? Was the fuel siphoned out from the filler neck or through the hole for the sender unit ; or was the strainer removed from the bottom of the tank ? If the fuel strainer was not removed from the bottom of the tank and either cleaned , or ideally replaced , then it could well be blocked . I’d also wonder if the feed hose coming out of the bottom of the tank might have a blockage ?

The presence of air sounds to me more like a leak in one of the pipes as it is hard to imagine where it is coming from .

I’m now wondering about the components in the fuel pump pack under the car : the pump itself , the injection fuel filter and the fuel accumulator ?

This is puzzling .

 

[Kerabo]

The reserve is just a warning light which comes on when the fuel level reaches a certain level , there is a contact within the sender unit but there is no separate feed pipe or tap to be changed over as was the case , for example , on my Ponton .

When the tank was drained , how was this done ? Was the fuel siphoned out from the filler neck or through the hole for the sender unit ; or was the strainer removed from the bottom of the tank ? If the fuel strainer was not removed from the bottom of the tank and either cleaned , or ideally replaced , then it could well be blocked . I’d also wonder if the feed hose coming out of the bottom of the tank might have a blockage ?

The presence of air sounds to me more like a leak in one of the pipes as it is hard to imagine where it is coming from .

I’m now wondering about the components in the fuel pump pack under the car : the pump itself , the injection fuel filter and the fuel accumulator ?

This is puzzling .

I will ask what and how these things were done and get back.
Need to get it jacked up to get under
Thank you