Vacuum pump quickly loses pressure during session

I recently bought a LeLuv Maxi pump and LeLuv cylinder, and have been experiencing that I have to frequently pump every 5-10 seconds to get back to the original pressure, since the pressure keeps dropping during the session. I am pressing pretty hard, so I’m not sure why it would be escaping from the contact point. It does seem like after doing it for several minutes, it escapes less and less, though.

Does anyone else experience anything like this, or is it likely that I have a defunct hose attachment or cylinder?

Also, is it bad if I have to re-pump frequently, or is maintaining around the same level of pressure by re-pumping every 5-10 seconds accomplishing roughly the same thing? If frequent re-pumping is causing too much strain on the penis compared to a constant pressure level, I definitely want to address it.

-Check the female up top and make sure it’s tight enough (but don’t use too much force), sometimes new cylinders come slightly loose.
-are you using lube around the area that the base of the cylinder presses into?
- what is your girth size and what is the size of the tube? It potentially could be too big which makes it harder to seal.

These are all common issues, all that I have learned from the vets. Saving them time by mentioning it first. I would check all of that first and get back to us.

Sometimes you can hear a hissing noise when there is a leak. I wouldn’t try lubricating O-rings with vaseline since it seems to degrade them quickly.

Sometimes a leak is actually at the base because the seal isn’t perfect and you can see if you have that when you have enough lube or water in the tube for it to produce air bubbles.

If you use an electric pump to maintain a set vacuum pressure little leaks aren’t an issue since the pump is continuously making adjustments, it can make a farting noise periodically in the tube though when you have a lot of edema.

There are some threads on using commonly found aquarium pumps for penis pumping with an easy modification. Not all aquarium pumps can be modified this way though.

Pull a vacuum in the chamber and disconnect the tube from the chamber, it should continue to hold a vacuum. If it does hold vacuum, then the issue is most likely in the pump, hose, or the male connector. If it does not hold air then it is most likely either your seal at the base or the female connector at the top of the chamber.

This might help you begin to trouble shoot the location of the leak.

Disclaimer: Post / reply is for entertainment purposes only. Zero liability past, present and future.

Using a vacuum cylinder and Hand Vacuum Pump is very simple just follow a few basic steps.

My personal experience 2 plastic over priced novelty Hand Vacuum Pumps never worked well or worked a few times then totally failed.

There was no customer support or parts just cash in the trash. Lesson learned.

I purchased a professional metal Hand Vacuum Pump with a gauge.

A few but not all metal Hand Vacuum Pumps are cheap enough to toss after a few years or just get an extended warranty. One major manufacturer has a rebuild kit.

Do an internet search for selecting the proper cylinder diameter and length.

A bead of generic water based gel helps.

I discovered that a little O-rings on fittings go bad over time from friction.

Over time the excessive pumping may cause the Hand Vacuum Pumps internal piston to wear out before its time.

I purchased a cheap O-ring assortment kit that had the O-ring diameter and thickness needed for the male fitting.

1. Check your hoses and make sure they are not dried out and have no cracks near the connectors and fittings. 2. If cracked but still flexible, carefully trim the 1/2” - 3/4” off hose ends otherwise replace the entire hose.

Diagnose.

1. First detach the hose and test Hand Vacuum Pump alone and watch the needle.

Is the needle reasonably steady? Good.

2. If the Hand Vacuum Pump all alone without any hose attached Fails The Test. Contact customer support. Replace it. OR Try to get a rebuild kit as directed by the manufacturer if one is available.

5. Attach the hose to the Hand Vacuum Pump. (No cylinder ) test the end of the hose and fitting for vacuum. Good?

6. Connect to the cylinder is it leaking still?

7. If Hand Vacuum Pump and hose alone test passes and the cylinder loses vacuum there may a worn out leaking O-ring somewhere.

Worst case scenario the cylinder plastic may have tiny cracks near the fitting threads. If the cylinder is cracked try claiming warranty or just replace it.

A few companies have specific O-rings for their cylinders.

Sometimes too much hair may cause a small leak.

I wrap my vacuum cylinders with a soft towel and store in a hard plastic case.

Disclaimer: Post / reply is for entertainment purposes only. Zero liability past, present and future.

Numbers or steps 3. and 4. were removed and I forgot to re-number before leaving the house to take a walk.

Here’s why.

The Hand Vacuum Pump’s internal piston materials may vary and the lubricant used may vary depending on the manufacturer.

**Using the wrong lubricant may degrade any rubber or plastic parts of the Hand Vacuum Pump’s internal piston.

**The only Hand Vacuum Pump lubrication instructions I found online are for an Automotive Hand Vacuum Pump.

3. Try lubricating the Hand Vacuum Pump internal piston.

4. Again detach the hose and test Hand Vacuum Pump alone and watch the needle.

Finally. Frequent re-pumping may cause excessive wear on the Hand Vacuum Pump’s internal piston materials and parts over time.

A quick question for number 4 step where it says “4. Again detach the hose and test Hand Vacuum Pump alone and watch the needle.”, how is the test being completed? How are you to test the pump so that the needle raises and stays at a pressure level?

Press your thumb against the hose or pump connection to create a seal, then activate the pump. With such small volume it will require a single pump to have a large vacuum reading.

For some reason cpk87 hasn’t been back to the forum since he posted his question on April 29th. Maybe he has solved his problem or maybe just gave up??? :shrug:

Just to share my 2 cents, I had the same problem. What fixed it ?

Teflon tape

I used it at both connectors, the one to the hand pump and the one to the cylinder. Also initially I used the hose that arrived with the hand pump for brake testing, but decided to switch it with the hose from my original penis pump that was without the gauge.

Simply plug the end of the hose with a golf tee when testing the hand vacuum pump. The gauge needle usually remains steady for several seconds. The quality of the hand vacuum pump and how well its made and how well threaded parts are sealed, how much use its had affects how soon vacuum is lost when performing a basic testing. I lubricated the internal moving plunger piston and used thread sealant on some parts. I think the rubber parts or O-rings depending on the design when dry probably wear out faster due to friction.