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Hi folks - first time poster. I’ve got a B&S v-twin ELS that is running very hot. Headers glow red. It is hard to start but once running it runs quite well (but hot). After shutting down it doesn’t want to start. When not wanting to start it will get firing on ether but will surge for a bit until it seems to prime fuel. Fuel pump works well and is getting plenty of fuel. Spark is good as well.

I’ve replaced the carb with new aftermarket & sealed any potential intake leaks with new gaskets and RTV.

I’ve rechecked timing and all is well. I pulled the heads to check head gaskets and no leaks. Valves are seating fine (no carbon build up).

I’ve readjusted the valves and they are in spec.

Still has not been resolved! What gives?!

FYI I was given the unit blown up. I sense the same issue was the root cause because the hood hinge is melted where it meets the frame, in the same place it is getting extremely hot to the touch now.

When rebuilding I replaced the following:
  • rods, pistons, rings
  • cylinders and gear case
  • cam shaft & lobes
 

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Hello Nytro, welcome to the forum.

Check out the attached blog. The last two points suggest that 1) The carbur4etor is running too lean or 2) There's a gasket leak in the carburetor causing a too lean condition.

 
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