Got a 10 HP Tecumseh on a Coleman generator. It starts (on choke), then dies right away. I've coaxed it on full choke (and after manually priming) to run like cr*p. The carb is new, the coil checks out great, the low oil sensor (I pulled the wire) has nothing to do with it, and the gas line is free and clear. The gas is fresh and ethanol free (all of it), the plug is brand new, the wires to the plug, the on/off switch, and the low oil sensor are all intact and not rubbing anything. I'm kind of at my wits end. I did not check the flywheel key (will tomorrow). Any other ideas?
10 HP Tecumseh (Generator) Stahls After Starting
- Thread starter yeehaw1960
- Start date
See if your exhaust valve has a gap. The old valves strech and it won't run very long. Grind off top for some clearance or just replace the valve.
A new valve will need to be ground for clearance.
yeehaw, does the new carburetor have a fixed or adjustable main jet? Have you pulled the float bowl nut to see if the float bowl is filling with fuel?
+1
Also, unless the new carb is an OEM part (unlikely with Tecumseh being out of business now) you can't trust that new parts = good.
This here. Sometimes it takes 2-3 of the $15 amazon carbs to get a good one.
If the main jet is undersized it will start with choke on then die when the choke is flipped.
Got a good one on second try for my old Coleman
Consider M1 15W-50 in that engine. They are known for lubrication related failures.
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