E130 Lawn Mower won’t go uphill except in reverse

   / E130 Lawn Mower won’t go uphill except in reverse #21  
My guess is the fuel level in the tank is above the engine and feeds by gravity, whereas going uphill the fuel pump has to move the fuel up to the engine. Just a guess..

That is a very good guess.

MoKelly
 
   / E130 Lawn Mower won’t go uphill except in reverse #22  
SO my suggestion wasn't to test the fuel pump. These draw fuel up a plastic straw out the top of the tank. When you drop a fuel line in the donor can, a working fuel pump is still required to draw the fuel out of the can. What it really does is take the pick up straw, fuel line and the possibility of debris or water in the tank out of the picture. To a lesser degree it takes the vapor recovery line out of the picture, which really doesn't seem to develop into a problem anyways. Is it possible that your pump is weak? Sure. It is also a possibility that there is debris. Or diesel :)
 
   / E130 Lawn Mower won’t go uphill except in reverse
  • Thread Starter
#23  
My guess is the fuel level in the tank is above the engine and feeds by gravity, whereas going uphill the fuel pump has to move the fuel up to the engine. Just a guess..
That is my thought, too.
 
   / E130 Lawn Mower won’t go uphill except in reverse
  • Thread Starter
#24  
SO my suggestion wasn't to test the fuel pump. These draw fuel up a plastic straw out the top of the tank. When you drop a fuel line in the donor can, a working fuel pump is still required to draw the fuel out of the can. What it really does is take the pick up straw, fuel line and the possibility of debris or water in the tank out of the picture. To a lesser degree it takes the vapor recovery line out of the picture, which really doesn't seem to develop into a problem anyways. Is it possible that your pump is weak? Sure. It is also a possibility that there is debris. Or diesel :)
Thanks for all your help. I had siphoned the old gas out a month or so ago and replaced it with non ethanol gas. I think that should have taken care of any water or debris. Am I Wrong about that? I just don’t know.
 
   / E130 Lawn Mower won’t go uphill except in reverse #26  
By doing what you believed to be the best thing, may have had a negative effect on running your machine, or it may not have. let's say that you did have water in your fuel tank and that you didn't get it all the way out. Water isn't absorbed into clear gas like it is with fuel with alcohol. When I have cleaned a tank that had water in it and the person uses clear gas, I'll either have him use ethanol gas or add it for the next tank anyways. These tanks a contorted enough that if you didn't have the luxury of removing and completely drying, there is probably some water remaining. Remember, your fuel is picked up from near the bottom and pulled upward out of the top of the tank. Water is heavier than fuel and will be at the bottom.

So what should you do now? Remove the line at the filter and run the line into a catch pan and look for water. Water in clear gas puddles up. Water in regular fuel will be cloudy and will puddle only when the alcohol can't "hold" anymore. You see water, it is time to clean/ drain the tank. If you can't maintain a flow, it is time to clean the tank of whatever debris is inside.

Engines that stall on slopes many times do so from a puddle of water in the carburetor bowl that hits the main pickup. So you may have water in the bowl. That is why the suggestion to remove the solenoid on the side of the carb bowl and let that drain into a catch pan. Once again, when you see water, clean the system the best you can and use a tank of regular gas w/ alcohol. That's because the meniscus of the water is broken and the water is more evenly distributed. Perfect, no- but for a tank full of running its NBD.
 
   / E130 Lawn Mower won’t go uphill except in reverse
  • Thread Starter
#27  
By doing what you believed to be the best thing, may have had a negative effect on running your machine, or it may not have. let's say that you did have water in your fuel tank and that you didn't get it all the way out. Water isn't absorbed into clear gas like it is with fuel with alcohol. When I have cleaned a tank that had water in it and the person uses clear gas, I'll either have him use ethanol gas or add it for the next tank anyways. These tanks a contorted enough that if you didn't have the luxury of removing and completely drying, there is probably some water remaining. Remember, your fuel is picked up from near the bottom and pulled upward out of the top of the tank. Water is heavier than fuel and will be at the bottom.

So what should you do now? Remove the line at the filter and run the line into a catch pan and look for water. Water in clear gas puddles up. Water in regular fuel will be cloudy and will puddle only when the alcohol can't "hold" anymore. You see water, it is time to clean/ drain the tank. If you can't maintain a flow, it is time to clean the tank of whatever debris is inside.

Engines that stall on slopes many times do so from a puddle of water in the carburetor bowl that hits the main pickup. So you may have water in the bowl. That is why the suggestion to remove the solenoid on the side of the carb bowl and let that drain into a catch pan. Once again, when you see water, clean the system the best you can and use a tank of regular gas w/ alcohol. That's because the meniscus of the water is broken and the water is more evenly distributed. Perfect, no- but for a tank full of running its NBD.
Thank you very much for a clear, well thought out answer. I will try what you suggested and hope for the best.
 
   / E130 Lawn Mower won’t go uphill except in reverse
  • Thread Starter
#28  
Solved!
Somebody on another forum showed me I had the black plastic piece on the auto choke rod backwards and it wasn’t connecited. I switched it and it works fine, now. It is weird that such a small thing could make the mower work in reverse uphill, but not forward. 🤷‍♂️

Thanks to everybody who commented and try to help me!
 

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