Jacob,
I forgot to ask what kind of enema solution are you using? Do you add soap to the solution? If so, what kind and how much? What is the approximate temperature of the water?
How high do you hang the bag?
What body position(s) are you using during or after the enema?
Do you retain the enema? If so, for how long?
1 quart of enema solution really is a small amount for your main or primary enema. That is why traditional enema bags have been manufactured to hold 2 quarts for the past 100 years. The additional quart of solution is more effective at removing fecal matter. It also is less likely to result in an enema being “stuck.” 1 quart of enema solution may not remove enough fecal matter and some of the solution may remain in the colon, blocked by stool that was not eliminated. A 2-quart enema is more effective, and because of that, less likely to become “stuck.”
Enemas getting “stuck” and not completely expelling within a reasonable amount of time is not uncommon for many people.

However, in my research I found a solution in old nursing handbooks from the 1940’s and 1950’s (the “Golden Age” of enemas) – the use of a final cool or cold enema to prompt the release of any retained enema solution. This method was commonly used in hospitals during the period cited. I use this “trick” myself when I cannot wait around and must leave the house for an appointment soon after completing an enema. Obviously, I want to avoid the risk of potentially embarrassing “delayed drainage.”
I mention this trick in my white paper on the use of preventive enemas to manage fecal incontinence.
A cool or cold final rinse (second rinse) will not aid much in preventing fecal incontinence, but it can help avoid annoying, embarrassing, and much dreaded late drainage after the enema is over. This is an old nurse's trick.
It is helpful to make the final rinse of saline water cool or cold in temperature (never use ice water) - cool water is 65 to 85 degrees F; cold water is considered to have a temperature of 50 to 65 degrees F. I must emphasize that this final cool or cold rinse (a third enema), is totally optional as it primarily affects possible late drainage from the previous enemas rather than fecal incontinence itself.
The colder the temperature of the water is, the more effective it will be. However, it also may be more uncomfortable. You will have to determine your own tolerance vis-à-vis the desired results.
The cooler water stimulates the colon to contract and release any remaining water from the previous warm enemas – and, very often, additional waste. After the cool water is expelled, you then may feel warmer water remaining from the previous enema also being expelled.
The rate of fill for a cool water enema may be noticeably slower than with a warm water enema as the walls of the colon do not relax as they do with warmer water. You may need to hang the bag just a bit higher to compensate for this effect.
A cool or cold water enema can be smaller in volume than the primary soapsuds enema or the rinse – often 500 ml to 1.0 L (1 pint to 1 quart). The smaller volume may be infused by repeated insertions using a bulb syringe, if desired.
Excessively cold water is unnecessarily uncomfortable and very difficult to retain. As a cold water enema can produce almost immediate peristalsis with very strong results, no period of retention is necessary. By using this technique I was able to experience 180+ enemas sessions without any late drainage after leaving the bathroom. Your success may vary.
Another thing you might do after the bag is empty and you have clamped the hose, is to remain on your right side for the first 2 minutes or so of your retention period. Then rotate from right to left sides, pausing for about 1 1/2 minutes for each side. This will cause the enema solution to flow back and forth in the colon, further loosening any stuck stool. Loosening any stuck stool also will aid in expelling the enema solution.
Discuss enemas with your physician, but don’t expect him to be very knowledgeable on the subject. My gastroenterologist told me that I knew more about enemas than he did.
If you decide to try the above, I would recommend that you do it on a weekend. A weekday morning before you leave for work is no time to experiment with enemas.
Good luck!
--John