Lawn mower following fuel in filter and exhaust and checking the float and reassembling the carb the pull cord won't deploy
I have tried to pull the cord with the spark plug out and still it is stiff. I have tipped the machine to see if there is any fuel coming out of the spark plug hole and there is nothing. I have sprayed penetrating oil into the spark plug hole and left it and still the cord won't pull. I have drained what could be contaminated oil with fuel in it out and replenished with new oil. The brake seems to be deploying properly and was working prior to the fuel in the filter etc. The coil works off the mower it is only when it is on the engine that it will not deploy, so it is not jammed. I cannot believe that a stuck float can cause such catastrophic damage to the cylinders. I cannot understand what could be impeding the pull unless the engine has seized. I didn't hit anything prior to the fuel leakage. I had managed to cut my back lawn. The carb was cleaned last year by a professional and serviced by a professional that is why I cannot understand why the float was sticking. It seemed fine when I took the float bowl off the bottom of the carb. This is the first time I have used the machine this year, it lasted all of about ten minutes. Any suggestions would be greatly received because I cannot believe such a simple problem can cause so much damage.
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Re: lawn mower following fuel in filter and exhaust and...
There's a penetrating catalyst (oil) called "BLASTER". Anything that may be causing the engine to freeze up, that can be desolved, broken loose or washed away... This stuff will get it done. You can get it at any auto parts store. Try that in the cylinder.
Also, Try back tracking what you've done. If the engine began acting frozen after you installed the carb, take the carb back off and see if the engine will turn over without it. If for some reason air doesn't flow through the carb, the engine will appear to be frozen and won't allow the exhaust valve open to complete the cycle.
Let me know what happens. I'm interested to find out. Have a good morning,
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you are absolutely right on target. This is called 'hydro-locking, In fact many engines have been destroyed when a leaking fuel injector ,overnight, even partially fills a cylinder that is on compression stroke. With the higher cranking speeds today, It usually bends the connecting rod when the engine rotates 1/4 revolution s or more and 'hits' the in-compressible liquid.
In your case, simply remove the spark plug, and pull the rope a few times to blow out the gasoline and then add a teaspoon of oil in the cylinder, pull the rope a few times to re-lubricate the cylinder. When there is no liquid coming out, reinstall the spark plug and it should be good to go.
With carburetors, even a tiny speck of leaf or grass can cause the float valve to leak.
Pinch off or turn off fuel line to carb. Remove carb from engine. Remove carb bottom bowl. Observe screw that holds bowl to carb if it has a whole thru it clean it out with a bread wrapper twist after you peal back about an inch of wire. Remove float and needle, use same wire to clean out port. Use same wire to clean out center fuel pick up port in center of carb. Ensure upon reassembly the float is free to move. Float up no fuel flow, float down fuel flow.
Dirty carb. Remove screw on bottom off carb exposing the carb float. Clean the float bowl. Ensure the float is working by pressing up on the float fuel flow stops, let it fall down, fuel flow. Observe the screw that you removed from the bowl, Look for to see if it has a whole thru it. Clean out the whole if it does. Bread wrapper wire with 1 in plastic cleaned off wire works good. Observe center fuel port, use wire to clean out port going to bottom of carb. Remove pin that holds float and meter needle, use wire to clean out port. Reassemble. Ensure free movement of float. Float up no fuel flow. Float down fuel flow. Use carb cleaner to clean carb inside. Ensure choke opens/closes properly. Always use Stabile in gas.
Ensure clean fuel. Always use Stabile in fuel. Follow fuel line from fuel tan to carb, ensure no leaks. Remove carb fuel bowl to check float operation. Have pliers to crimp line or use fuel shut off valve. Remove carb float bowl and clean. Float should hang down freely gas should flow. Push float up gas should cut off. Replace spark plug, ensure plug wire snaps on tight. Clean or replace air filter. Ensure oil is full, 30w oil. All mowers have low oil shutoff.
See if your mower has a float bowl on bottom of carb, if so then remove that and see if gas runs out with the float in down position..hanging, then lightly push float up and see if gas stops running, if that is o.k. then clean screw that holds bvowl on and there are 2 holes in this screw, 1 large and 1 tiny make sure they are clean, run a bread tie through the holes then reassemble and check your spark plug and see if it is wet or fludded, dry it off and try to start again, try to spray carb cleaner in carb and pull once started you may have to choke to keep going till all your OLD gas is ran through....Good Luck
Its a fuel flow problem, start with checking the in line fuel filter,if thats clean and the gas is flowing well, then its probably some dirt or water in the carb. The carb has a brass nozzle in the middle of the float area. remove the carb, hold it upside down and remove the bowl, use a flat screwdriver and unscrew the part thets recessed in the part thet sticks up thru the float, clean the tiny little holes with a torch tip cleaner set, (available at any auto supply store for about 3 dollars). then spray some carb cleaner thru the part and the dry it with air and reassemble. This should solve your problem
Check the float in the carb. bowl for gumming and clean your carb.. If you haven't done so already. Or you can try running a fuel treatment through your fuel. That may help you with your flooding issues. Good luck.
carb is gummed up from the old fuel turning to varnish and clogging the jets. while trying to start, its trying to inject fuel, but its clogged and taking the path of least resistance (coming out the air filter).
you'll need to drain the gas tank and remove the carb to clean it out. if unfamiliar or uncomfortable doing this, then take it to someone to do a carb cleaning.