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Post by chuckups on Jan 10, 2016 18:29:22 GMT -5
I have a Homelite 1050 that has been used very little. From what I can tell the saw is not pulling gas from the tank. Rebuilt the carb. with a new kit cleaned carb still not picking up gas. All manifold gaskets are in good shape. I did bypass the fuel tank and ran gas straight into carb it started and ran. The carb is an SDC 74. I need some new ideas!
Thanks
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Post by Supercharged86 on Jan 10, 2016 22:43:03 GMT -5
I have a Homelite 1050 that has been used very little. From what I can tell the saw is not pulling gas from the tank. Rebuilt the carb. with a new kit cleaned carb still not picking up gas. All manifold gaskets are in good shape. I did bypass the fuel tank and ran gas straight into carb it started and ran. The carb is an SDC 74. I need some new ideas! Thanks Chuckups, When you say "bypass" the fuel tank, are we talking gravity feeding into the carb inlet port from another container, priming it down the throat or something else? Is this carb fixed high speed? With the carb fully rebuilt, how about the impulse passages from the crankcase? Steve |
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Post by sweepleader on Jan 11, 2016 8:04:57 GMT -5
How about the gas line and filter? Gas cap vent? Those all ok?
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Post by sawnami on Jan 11, 2016 8:31:12 GMT -5
I usually fish out the in-tank filter, remove it, and apply pressure with a Mityvac that will switch to pressure or bulb pump like for testing blood pressure. It should hold 5PSI if the supply line and needle and seat are good. There are actually two sections to the fuel supply hose. The in-tank hose pushes over a metal fitting screwed into the tank and the hose going to the carb presses over the other end of the tank fitting.
You can also check for the line being plugged too. I've also found the zinc filter housing on in the tank filter corroded and blocking the nipple on it with corrosion.
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Post by chuckups on Jan 12, 2016 19:48:43 GMT -5
Thanks guys for the help,
I did use a container of gas attached directly to the carb. the saw did run.The impulse holes are open. Both sections of fuel line are in good shape and open. I did pressure test the carb. it held pressure and vaccum. about ready to give up!
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Post by sawnami on Jan 12, 2016 21:52:41 GMT -5
Did you take your in-tank filter apart and check for restrictions? This one is really bad but I've seen them that looked OK on the hose end but were restricted internally.  |
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Post by Supercharged86 on Jan 13, 2016 10:13:40 GMT -5
Ok, just so I understand this correctly. The saw runs fine and the carb pulls fuel with a temporary fuel tank sitting next to the saw but doesn't run when connected to the saw tank? And you've replaced the fuel line, fuel filter and checked the in-line fitting (#58364) for cracks where you could be sucking air? Did you check the fuel tank vent? Not usually a problem until the saws runs a few minutes, but a non-working fuel vent creates a vacuum inside, thereby not allowing the carb to pull fuel. I'm sure this isn't the immediate problem but trying to cover everything. Sounds like a blockage or a air leak to me.
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Post by chuckups on Jan 14, 2016 6:47:12 GMT -5
Thanks again for the ideas,
When I bypassed the fuel tank I anchored a container of fuel above the saw and gravity fed the saw. Did check all fuel lines replaced the duck bill valve in fuel cap, checked filter. Now thinking might be air leak somewhere.
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Post by Supercharged86 on Jan 20, 2016 9:18:45 GMT -5
Thanks again for the ideas, When I bypassed the fuel tank I anchored a container of fuel above the saw and gravity fed the saw. Did check all fuel lines replaced the duck bill valve in fuel cap, checked filter. Now thinking might be air leak somewhere. Hi Chuck, Any progress on the 1050? Steve |
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