Neil Hornung wrote: >Now back to my original question about the backfiring/timing problem. Can >anyone help with that?
First make absolutely sure the electronic ignition is set to fire where it's supposed to, which means make sure you know where 28 degrees is with respect to TDC, and that includes checking for TDC through the spark plug hole. Then do the same with the mag, making sure it's right on the money at full advance. Then spend some time making sure there are no vacuum leaks in the intake system, which are indicated anytime it pops at idle but smooths out at higher rpm. Since it seems to run without popping when running on the mag , I'd then turn off the electronic ignition to take it out of the equation and work through the initial setup procedure for the idle circuit per the instructions for that carb. I don't know if that carb has a separate idle jet or adjustment, but that being clogged or misadjusted is another real possibility. That thing is so simple that blowing out any passages with air would be a good idea before you even start with the setup. Eventually you'll get there, but you need to slay one dragon at a time and ascertain that one situation is definitely correct before moving on to the next. Mark Langford N56ML "at" hiwaay.net website at http://www.N56ML.com --------------------------------------------------------
