Toro PP 20073 w/ Tecumseh stalls under load

[KE4AVB]

Thinking about your description of the problem it sounds like a worn cylinder and rings allowing a lot of blow by under load on the 2007 engine.

[Luffydog]

When this unit does this can you safely push the primer bulb and see if the rpms pick back up when you push it.

[jwales]

Well, I think it is time to salvage a couple parts and send the mower to the scrap yard... I checked compression on my older Tecumseh Toro and had 90 +. This one I could get no better than 60, multiple checks. Oh well, the outside appearance does not always relate to the inside.
Thanks for all the advice.

[lefty]

My first attempted at helping on this forum, so the more experienced members can view this as part suggestion and part inquiry, but could a clogged or partially clogged gas cap vent be contributing to the problem?

[jwales]

Lefty, I do not know if that could be a cause but I can tell you it was not the cause here as The fuel tank cap that was on this unit was missing the tin cone underneath so I substituted the one off my personal working mower.