Fri, 03 Sep 2010 18:34:30 -0500 Recent Content from Lancisti Community Home http://www.lancisti.net/forum Mon, 14 Jun 2010 00:08:00 -0500 Problems with DMTR/DATR/DATRA carbs can usually be grouped into three categories, vacuum leaks, idle passage issues, heavy float ... at least that's my experience in 25 years of Fiat / lancia service.<br /> <br /> Sometimes it's as a result of wear and tear, but often is a result of POS (previous owner syndrome)<br /> <br /> Vacuum leaks ... most common is a bent base plate, caused by overtightening the mounting nuts. The only surefire way to check this is carb removal, and put a straight edge across the base, straight and diagonally. Fix is relatively simple, remove all linkage assemblies and face the base on a sheet of glass with fine sandpaper and plenty of water flowing over it moving the carb in a figure 8 fashion ... main thing to watch http://www.lancisti.net/forum/content.php?2-DMTR-DATR-DATRA-carb-adjustment-guide http://www.lancisti.net/forum/content.php?2-DMTR-DATR-DATRA-carb-adjustment-guide