Posted by Kaegi on Thursday, August 17, 2006 at 11:58AM :
In Reply to: 251tune-up help posted by mclark on Wednesday, August 16, 2006 at 11:03PM :
many of the flathead powered WCs and FFPWs I have had did not even have a functionling accelerator pump and they didn't backfire. That could be the prob but I would check your dwell setting then your timing setting as well.