by warra48 » Tuesday Aug 07, 2012 7:48 pm
I don't believe the yeast would cause your issue. There just isn't enough left in the brew after bottling to make an appreciable difference.
If your FG was 1.004, that's quite low, but given you used 1kg of sugar, perhaps not unexpected.
Most likely, you have just used too much priming sugar.
I always weigh my sugar container before and after priming, so I know precisely how much I use, and to what extent I carbonate. I keep records of every brew in my BeerSmith recipe notes.
Alternatively, you may have an infection in your bottles, but you'd know it from the taste if that was the case.
Perhaps you might place your bottles in the fridge for a few days before consuming, to give any residual yeast etc a chance to drop out and compact in the bottom of your bottle.
I can't really think of anything else on the information you've given us.