Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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Have you checked to make sure you are getting a good, steady flow of fuel, from your fuel tank, to your carburetor?
Thanks for your reply. If your engine will only run briefly, if you spray starting fluid directly into your carburetor, then it is very likely that your carburetor is at fault, although it is new.
The main jet could still be clogged. The screw that secures your fuel bowl to your carburetor, is your main jet. It has three small holes in it. Did you clean these holes?
Please take a look at the image links below.
The images shows the holes in your bowl bolt ...
Use a small wire to clean these holes.
Also, clean the hole in the center of your carburetor, where your main jet screws into.
You can use a welding tip cleaner to clean this area, due to hole being larger.
Did you replace the gasket between your carburetor and your intake manifold?
How old is your engine?
I am lead to believe that your carburetor is the problem. Another possibility is your intake valve may not be properly sealing.
Have you checked to see if your fuel cap is venting?
After you removed the fuel bowl from your new carburetor, did you notice any sediments in your fuel bowl?
If your fuel cap is not properly venting, it can restrict your fuel flow to your carburetor.
I do not believe your spark plug is the issue. If it was causing our problem, the starting fluid would not cause your engine to start up briefly. Keep in mind that an engine needs three things in order to run. Fuel, Spark, and Compression.
Our problem is likely fuel or compression, rather than spark.
I have purchased new carburetors that were bad straight from the box.
Carburetors are tested at the factory, and sometimes all fuel is not completely drained, or evaporated.
The residual fuel will eventually turn stale and cause carburetor issues, clogged jets and fuel passages. Yes, there is not a time limit on your question. We can continue tomorrow.
You are very welcome!