I am having a heck of a time getting the Weber carbs I installed recently to run right. The car does two things.
First, it backfires on deceleration. Second, it stumbles in the mid-range between 2-3k. Sometimes I seem to get it to run OK and then the next day it runs terrible.
One guy that looked at it said it was the timing and/or the distributor needs recurving. I have not set the advance timing yet b/c I am too chicken to do it with the engine running at 6k (35 degrees BTDC). I have set the timing for the idle setting (5 degrees BTDC). The 911 Performance Handbook says that as an alternative to recurving that 78-79 distributors will work. Others have told me that the stock distributor is fine and that I should just have it tuned at a shop with a dyno.
Also, when I set the mixture screws the guy at my garage says to start at 1 1/2 turns and then adjust each individually.
Should I set all the screws the same number of turns or do each one individually?
