I have had several lawn mowers with older Tecumseh engines with "dual system" carburetors. Seems to be models like the TVS90. They all had the same problem. The engine floods with gas when it is not running. When left to sit over time, the carburetor throat fills with gas, leaking into the cylinder and eventually crankcase, muffler, and air filter, and onto the floor. I would like a solution to this problem once and for all! This is what they look like.
Let me explain the latest case. I got a Craftsman mower with one of these Tecumseh engines. I put gas in it and was able to start it but it ran poorly so I decided to rebuild it. It also leaked gas and had been leaking gas for a long time (the deck was stained and the paint was peeling.) I rebuilt the carburetor. It runs great but continues to leak gas when left to sit for a few hours. The rate of the leak seems to depend on how much gas is in the tank (makes sense.)
The only solution (if one can call it that) is fuel line shutoff. That's fine if you remember to turn it off every time. But if you forget, gas gets in the oil and wrecks things. It also makes a mess and makes the engine hard to start. I buy, fix, and sell mowers (and do repairs for people) and I won't sell a mower to someone just hoping that they remember the shutoff every time. That is not how I operate.
So, I would like an actual solution. When someone brings in their mower with this model engine with this problem, I don't like to have to tell them that there is nothing I can do to fix that.
Is there anyone on here who works for a licensed Tecumseh repair place? Any Tecumseh engineers or factory workers? Someone who sees a lot of mowers on a daily basis must know of this problem and hopefully, a fix.
This problem has been discussed on several other forums and places on the internet and none of them ever seem to solve the problem. http://www.mylawnmowerforum.com/foru...seh-carbs.html
Rant over. Thanks for reading. Your advice would be greatly appreciated!
Before you reply, keep in mind that all of them did this before without being worked on by someone else so it is highly unlikely that a part has been installed wrong by me or the previous mechanics. It seems to be a problem that just develops on it's own.
Let me explain the latest case. I got a Craftsman mower with one of these Tecumseh engines. I put gas in it and was able to start it but it ran poorly so I decided to rebuild it. It also leaked gas and had been leaking gas for a long time (the deck was stained and the paint was peeling.) I rebuilt the carburetor. It runs great but continues to leak gas when left to sit for a few hours. The rate of the leak seems to depend on how much gas is in the tank (makes sense.)
The only solution (if one can call it that) is fuel line shutoff. That's fine if you remember to turn it off every time. But if you forget, gas gets in the oil and wrecks things. It also makes a mess and makes the engine hard to start. I buy, fix, and sell mowers (and do repairs for people) and I won't sell a mower to someone just hoping that they remember the shutoff every time. That is not how I operate.
So, I would like an actual solution. When someone brings in their mower with this model engine with this problem, I don't like to have to tell them that there is nothing I can do to fix that.
Is there anyone on here who works for a licensed Tecumseh repair place? Any Tecumseh engineers or factory workers? Someone who sees a lot of mowers on a daily basis must know of this problem and hopefully, a fix.
This problem has been discussed on several other forums and places on the internet and none of them ever seem to solve the problem. http://www.mylawnmowerforum.com/foru...seh-carbs.html
Rant over. Thanks for reading. Your advice would be greatly appreciated!
Before you reply, keep in mind that all of them did this before without being worked on by someone else so it is highly unlikely that a part has been installed wrong by me or the previous mechanics. It seems to be a problem that just develops on it's own.