Gentlemen,
I have the aforementioned engine, #640-19D, Eska model 14209-B.
I have:
1. Used brand new gasoline in a 50:1 mix ratio with marine 2 cycle oil.
2. Disassembled the carburetor and soaked, scrubbed, resoaked and scrubbed every square millimeter of it.
3. Run ultrafine wires through all holes, even up through the internals.
4. Replaced all gaskets and needle seat, red rubber fuel pump, membrane fuel valve and gasket.
5. New bowl ring
6. Replaced BOTH gaskets attaching the carb to the main body of the engine.
7. Quadruple checked all screws for tigntness.
8. Replaced the points, checked the timing
9. Measured the points gap to .020.
10. Installed a new spark plug and set it at .030.
11. Installed new fuel lines.
12. Removed the side engine plates and visualized the piston with transillumination to confirm no corrosion/pitting.
13. Replaced both side plate gaskets when reassembling.
14. Visualized that both fuel inlet ports are not clogged.
Had the engine running then on one trip she would sputter out after about 10 min at full throttle. After several pulls, she would go 10 minutes more. Then the very next day, she wouldn't turn over and run except at 1/2 choke.... and only for 1-2 minutes then "bucked" several times and stopped
SO... I disassembled the carburetor, cleaned it AGAIN as above, checked all valves, holes and gaskets for patency as well as the fuel screen.
Rechecked all my fuel lines...
Now, in my driveway, in water, she will fire up and run ONLY at 1/2 choke without cutting out. I have adjusted the air/fuel mixture through the full screw capabilities to no avail. Any choke position in or out from 1/2 causes mild buckling and shutdown.
Most 1/2 choke problems I have read about here seem to be gummed carburetor issues, but everything is new and clean enough to eat off of....
(Yes, the fuel tank is open and vented)
Apart from putting a bullet in this engine now or punching the engineer who designed the layout to be the most "pain in the ass" for carburetor access, can anyone guide me as to what I am overlooking or what happened?
Sincerely,
Cash
I have the aforementioned engine, #640-19D, Eska model 14209-B.
I have:
1. Used brand new gasoline in a 50:1 mix ratio with marine 2 cycle oil.
2. Disassembled the carburetor and soaked, scrubbed, resoaked and scrubbed every square millimeter of it.
3. Run ultrafine wires through all holes, even up through the internals.
4. Replaced all gaskets and needle seat, red rubber fuel pump, membrane fuel valve and gasket.
5. New bowl ring
6. Replaced BOTH gaskets attaching the carb to the main body of the engine.
7. Quadruple checked all screws for tigntness.
8. Replaced the points, checked the timing
9. Measured the points gap to .020.
10. Installed a new spark plug and set it at .030.
11. Installed new fuel lines.
12. Removed the side engine plates and visualized the piston with transillumination to confirm no corrosion/pitting.
13. Replaced both side plate gaskets when reassembling.
14. Visualized that both fuel inlet ports are not clogged.
Had the engine running then on one trip she would sputter out after about 10 min at full throttle. After several pulls, she would go 10 minutes more. Then the very next day, she wouldn't turn over and run except at 1/2 choke.... and only for 1-2 minutes then "bucked" several times and stopped
SO... I disassembled the carburetor, cleaned it AGAIN as above, checked all valves, holes and gaskets for patency as well as the fuel screen.
Rechecked all my fuel lines...
Now, in my driveway, in water, she will fire up and run ONLY at 1/2 choke without cutting out. I have adjusted the air/fuel mixture through the full screw capabilities to no avail. Any choke position in or out from 1/2 causes mild buckling and shutdown.
Most 1/2 choke problems I have read about here seem to be gummed carburetor issues, but everything is new and clean enough to eat off of....
(Yes, the fuel tank is open and vented)
Apart from putting a bullet in this engine now or punching the engineer who designed the layout to be the most "pain in the ass" for carburetor access, can anyone guide me as to what I am overlooking or what happened?
Sincerely,
Cash
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