tubeless tire going flat

Filled up pressure at 35 psi at night and it will be flat by morning...

should I add sealant?

no damage to the tires sidewall and I cant find the source of the leak.

what would you recommend I do
LBS put on the tubless system and Im not familiar with it yet.

 

when was the tire installed?
Last time it had sealant put in?

What tire / rim?

 

1st advice - pump it up and go ride
2nd advice - UST or Stan's system?

Check the valve for leakage.

 

Soap the tire and look for foam. Move the section of the tire that has the foam to the bottom and shake. Set the tire on its side and let it set for awhile. Repeat until all the tire no longer foams.

Check out the following (at the 7:00 mark)
http://www.notubes.com/movieinstall.php

 

Well, a few questions ...

What rim/tire combo?

Shop put the system on:-k, do you mean they installed the rim strip and mounted the tire?
Did they laced up a set of UST rims?
What tubeless system did they use?

 

bontrager duster rim with kenda karma 2.2

tire installed about a month ago and I havent put any sealant in since then

ya installed the rim strip and mounted the tire..

I dont know what tubless system they used I did not know there was a difference but i know they mentioned stans sealant

 

kenda karma a UST tire?? (the one i have isnt...)

Check/Add some more sealant
make sure both beads are seated - (2 pops with an air compressor).

 

You don't have a problem. I have to pump air into my tires before every ride.

Everybody I know that runs tubeless has to. Light weight tubes are the same way.

 

Do you have a container large enough that when filled with water you can completely submerge sections of the wheel? If you can, try that and see where the leak is coming from.

A month is not that long for sealant to be in a tire and dry out completely. The sealant is there only to seal leaks and not to make the tire/rim combo airtight unless the tires you are using are not true UST tires that is.

Adding sealant won't hurt either. Also make sure the valve and valce core are nice and tight. Leaks can come from that area as well.

:-k I don't.

 

My UST tires MIGHT loose a pound or two in a month.

 

mine are flat every morning, litterally????


ya I checked for leakage and I can't find any leaks... then I went out to ride.. before i left I inflated my rear tire to 40 PSI. I started up los robles trail and 10 minutes into my ride I was cuzing on the fire rode and started to feel air hitting my left leg, wtf, I look down and my tire was half flat so I hiked it back.

I inflated it back to 40 PSI and nothing seems wrong, no sign of sidewall damage, no gunk anywhere from stan's trying to seal a puncture? but there is a popping noise once every revolution of the tire while on the bike. so maybe something to do with the bead

Im wondering what could have caused that?

but regardless im going back to tubes. I never had a problem except an ocassional pinch flat with tubes and weight doesnt bother me.

 

The only problems I've had with tubeless is converting non UST tires. Using UST tires equals zero problems for me. Kendas are notorious for having thin sidewalls (non UST of course).

 

Before you jump to conclusions and down tubeless, you might want to bring your wheels to the Path and have them take a look at them... I am sure that they have the solution to your problem... Been running tubeless for 2+ years with only one flat and thousands of miles of problem free riding...

But since you are so far away from the Path in Tustin, I would recommend using Stan's rim tape, presta valve, and sealant. Also, as others have said, Kenda's are notorious for being tough to seal and mount on the rim... Been running Specialized 2Bliss and am really happy so far...

 

I have non-UST Kenda's running on Stan's rims and have no problems holding air for long periods of time. It took 2 nights of soap/shake/side-rest to find all the leaks but once it was sealed - no problems. Others have mentioned but make sure the stem is tight. My set-up has removable cores that had to be tightend to make them air-tight.

I'll back cjwally - don't give up. I recently converted and will never go back.

 

A trick that works with me is to rub sealant on the beads before I air up.

 

My brother is running mavic (somethings) and tubless tires, had the same issue but he leaked in 3 hours of riding, pumped it up and kept going, he added sealant and fixed.

 

Thats same thing I'm doing and it seems to have fixed the problem. we'll see if it continues to hold air with a little bit more riding.

I still always check my air pressure before riding but I should not be loosing so much in such little time.

thanks for your help

 

Im still using the same rim strips that you gave me. Still work fine.

 

So when I had westlake cyclery install my tubless system.. the guy sold me the non-tubeless kenda karma tires. I talked to another guy in the shop and he said even the tubless kenda tires are below par when it comes to tubless systems because in the kenda tires are tiny little holes that let the air out, and he has no idea why i was sold the non-tubless in tires in the first place...

I put tubes back into my tires for now. I would like to find a set of tubeless tires that are going to work well... The guy at the shop said that maxxis makes a good tubless tire. anyone else have any suggestions besides the 2bliss by specialized as mentioned above? (considering those)

 

Not to be contrary, but........I have been running Kenda non-tubeless tires (Nevegals & Small Block 8's) with Stan's, for years, with absolutely no issues. That has been both with strips and dedicated Stan's rims. For me, the key has been proper set up and I will be the first to admit that there is an initial learning curve. For the type of riding I do, it is the perfect set up.