WR 450 Backfiring
Posted January 17, 2008 - 11:06 PM
Posted January 18, 2008 - 02:04 AM
Also, if the pilot circuit is too lean (assuming the main and needle are spot on) this can also lead to excessive popping (the reason WR's have an ACV) Tweaking the fuel screw up to and no more than 1/2 turn can reduce it. You cannot eliminate it.
Posted January 18, 2008 - 08:03 AM