I seem to be having a fuel delivery problem. I am suspecting recurrent blockage in the fuel tank fuel line pickup. Details and symptoms:
Midsummer, had fuel supply problems. Old mercury type filter cannister was full of goopy creamy emulsion, and about a teaspoon of pale green dust. Replaced cannister - easy fix. I was pleased with myself.
More recently, fuel cutout problems. Electric pump seems to work well -it keeps ticking, indicating it is not ...filling the float bowl. Cannister was not full of fuel. Pump worked well with fuel line in a gerry can.
Cleaned fuel lines. Line from filter to tank is copper. Cleaned it, a few flakes of black came out. At tank is a high quality 3 position fuel valve - I expected it to be gummed up, but it was clean.
I took a big bike pump with a pressure gauge and pressurised the line into the tank. After building some pressure, it blew back into the tank. Motor then ran happily for 45 min. I was pleased with myself. Assumption - pick-up blocked.
But today, a week later, problem is back. The tank is monel, I believe, and ~40 years old. As noted, there is some pale green dust - some kind of insoluble nickel salt?
Is my tank bottom full of grit and other muck which will continue to block my fuel pickup? If so, how can I clean/flush/dissolve/fix my problem?
thanks!
Simon
Midsummer, had fuel supply problems. Old mercury type filter cannister was full of goopy creamy emulsion, and about a teaspoon of pale green dust. Replaced cannister - easy fix. I was pleased with myself.
More recently, fuel cutout problems. Electric pump seems to work well -it keeps ticking, indicating it is not ...filling the float bowl. Cannister was not full of fuel. Pump worked well with fuel line in a gerry can.
Cleaned fuel lines. Line from filter to tank is copper. Cleaned it, a few flakes of black came out. At tank is a high quality 3 position fuel valve - I expected it to be gummed up, but it was clean.
I took a big bike pump with a pressure gauge and pressurised the line into the tank. After building some pressure, it blew back into the tank. Motor then ran happily for 45 min. I was pleased with myself. Assumption - pick-up blocked.
But today, a week later, problem is back. The tank is monel, I believe, and ~40 years old. As noted, there is some pale green dust - some kind of insoluble nickel salt?
Is my tank bottom full of grit and other muck which will continue to block my fuel pickup? If so, how can I clean/flush/dissolve/fix my problem?
thanks!
Simon
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