Originally Posted by
Chris__RC
For the pinch test, engine revs up really high indicating it needs to be leaner on the lsn. So if it doesnt idle for 15 seconds...what could be the problem?
Judging by the above symptoms, it does sound like your lsn is too rich. This would cause the engine to "load up" with fuel and die after idling for a while. I would lean the lsn in very small increments. After each adjustment, run the engine at wot for a couple of times and then do the pinch test again.