"Weber 38 carb drains bowl when engine is shut off"
viewtopic.php?f=1&t=75934
I guess you live at
http://www.craterlakelodges.com/find-us/weather/ ????
Good fortune.
All the factory Ford Weber 38 DG carbs came with very good PCV valves and baffels. These carbs hate the standard Postive Crankcase Ventilation, check any powered booster and invest in getting an adjustable PCV valve if you cant dampen the PCV valve like Ford did on all its 2-bbl Weber carbed cars from 1969 to 1988, from 1300 to 3000 cc's cars that used the Weber had the Kent 1600, Pinto 1600/ 2000 and Lima 2300 style baffel to eliminate air flow influecing the idle and float bowel levels.
See
viewtopic.php?f=1&t=73925&p=574647#p574647
Webers are very sensitive to dirt and what others call "bad" adjustments... float level is critical. They are a much more sophisticated instrument than a lot of other carbs.
If the idles you have fitted are working and you can adjust from too rich to too lean with the adjustment screws they are probably OK.
If the emulsion tubes are blocked in any way you will also have problems there.
One common fault is for people put the small air corrector jet from a progressive carb into the secondary side of a DGAS .
As you'll know, the DGAS is not progressive so be sure someone hasn't replaced one of the air correctors with a smaller jet .
Check needle and seat and fit a new 38DGAS/38DGES/38DGMS 250 micron 2.5 mm Needle and seat valve.
Reset the float as per Swatson454
http://www.jeepforum.com/forum/f8/weber ... ndex2.html
post #20 of 102 Old 02-20-2012, 04:41 PM
And post #29 of 102 Old 02-25-2012, 11:24 PM
Check for leaks using an unlit propane lighter while the engine is on idling...if idle goes up, there is a gasket or adaptor leak somewhere. And 9 times outa 10, there is.
I'd expect your car to empty its float bowles with modern fuels at your altitude, but the other matters might be related to the type of 38 Weber you have.
Jeeps use a steel return line filter, and some 38's have a return line to stop fuel bleed off
http://www.jeepforum.com/forum/f8/weber ... aw-927959/
http://www.jalopyjournal.com/forum/thre ... lp.697683/
Power valve...check it and its diaphram are not hard and brittle. Renew it with a 3.6 or 8.5 power valve.
Accelertor pump diaphrams mate to a facing that on 38's sometimes have wrongly machined base lugs, and this can cause problems with accelerator pump leakage. There are check valves in the accelerator pump linkage too, and often, parts get put asside.
