Abby’s Guide > Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) > Discussions > 2-Cycle TEC engine surging and as it gets hotter the engine eventually dies
Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions |
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borat
Joined: Nov 10, 2007
Points: 2692
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Re: 2-Cycle TEC engine surging and as it gets hotter the engine eventually dies
Reply #1 Feb 3, 2011 12:50 pm |
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2-Cycle TEC engine surging and as it gets hotter the engine eventually dies after 10 minutes of running. I checked and cleaned everything. Carb is spotless, changed ignition coil, exhaust ports & exhaust spotless, new sparkplug. I did notice a bit of oily drops around the middle of the block. The compression seems to be ok when pulling the pull cord. Have you pulled the spark plug to check the colour? If not, please do so and if you can, post a picture of it. If no picture, please describe the coulour of the electrodes. You say the carb is "spotless". Does that mean you completely disassembled it, thoroughly cleaned every jet, orifice and gallery you could find? If so, when you put the carb back on, did you make sure you put the little spring back on with the governor linkage? Not sure how important that is, but it's pretty small and easy to misplace. The reason I ask is that your problems seems to be carburetor related. I took the carb off of my 1997 Tecumseh two cycle engine (Craftsman single stage) and gave it a thorough cleaning just a couple weeks ago. When doing so, I noticed that a Welch plug (aluminum disc half the size of a dime) had fallen from it position on the bottom of the carb and was resting on the float. Obviously not doing it's job. I replaced it and put the carb back together and the engine runs like a champ.
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fleetfoot
Joined: Jan 23, 2011
Points: 19
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Re: 2-Cycle TEC engine surging and as it gets hotter the engine eventually dies
Reply #2 Feb 3, 2011 1:30 pm |
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Try running it with the gas cap off or at least very loose. The vent in the gas cap may be plugged. How much gas is in the tank?
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edgenet
If you enjoy doing it, It's not work
Location: Toronto
Joined: Nov 27, 2010
Points: 84
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Re: 2-Cycle TEC engine surging and as it gets hotter the engine eventually dies
Reply #4 Feb 3, 2011 4:50 pm |
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Have you pulled the spark plug to check the colour? If not, please do so and if you can, post a picture of it. If no picture, please describe the coulour of the electrodes.
You say the carb is "spotless". Does that mean you completely disassembled it, thoroughly cleaned every jet, orifice and gallery you could find? If so, when you put the carb back on, did you make sure you put the little spring back on with the governor linkage? Not sure how important that is, but it's pretty small and easy to misplace.
The reason I ask is that your problems seems to be carburetor related. I took the carb off of my 1997 Tecumseh two cycle engine (Craftsman single stage) and gave it a thorough cleaning just a couple weeks ago. When doing so, I noticed that a Welch plug (aluminum disc half the size of a dime) had fallen from it position on the bottom of the carb and was resting on the float. Obviously not doing it's job. I replaced it and put the carb back together and the engine runs like a champ.
I did not remove the carb. This is a mastercraft blower and the carb can be seen from every angle. I poked and cleaned every opening in the carb. I will take another look if it does not work and if I can't see anything I do have another snowblower with a blown engine I may give that carb a try.
If you are getting paid for what you are doing No matter how much you Enjoy it, It's a Job
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edgenet
If you enjoy doing it, It's not work
Location: Toronto
Joined: Nov 27, 2010
Points: 84
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Re: 2-Cycle TEC engine surging and as it gets hotter the engine eventually dies
Reply #6 Feb 5, 2011 3:30 pm |
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Ok I swapped carb No Change with the other carb. I removed the top of the snowblower and watched as the engine ran or should I say surging. I noticed at the base of the muffler droplets of oil residue blowing out at the base of the muffler indicating a blown muffler gasket. I did not have a gasket so I used JB Weld as a sealer once it sets over-night I will give it a try. Any other thoughts.
This message was modified Feb 6, 2011 by edgenet
If you are getting paid for what you are doing No matter how much you Enjoy it, It's a Job
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