This ones starts and runs well until it gets hot. The other engine runs very well with the same arrangement and the carb is cold to the touch after running. This carb is also cold to the touch after running, so I don't think it's a heat-in-the-carb problem.

The spring has made zero difference (makes sense since the other engine has no spring and that runs fine). But it's stopping in for now.


I do have a different pickup arrangement on this one and I just noticed it was just on the cusp of being too far away from the magnet. I've altered it - but it's too late to try again tonight.

The plug also has black oily gunk in it - which is hard to clean in such a small item. It's only had 10 mins running, but this engine is brand new. The first one was fully run-in. Plug is next suspect though. Don't have a spare yet.


More tomorrow!