Looper Shutdown with a rattle noise

[THEFERMANATOR]

Originally Posted by nymack66

If I reduce the idle jets will this drop my idle rpm's ?

Yes. Chances are it is running pretty lean and will sneeze on you pretty badly when you put it in the water. With the BOYESENS you need to keep it jetted rich as a lean sneeze WILL blow out the BOYESEN reeds(The TDR's don't seem to suffer from this as they are MUCH thicker and made from epoxy). IIRC stock idle jets should be 28's, I would start there and see what she does. Also remember that after break in you will probably need to play with the jets some. I would also swap out your mids for a set of 16's or 14's as the 86 140 carbs were known to be lean in the mid range and would occasionally stall on accel. And run 63's in your mains if the engine was bored.