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Old 08-07-2012, 06:21 PM   #1
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Can't add air to trailer tires. (Solved)

Why can't I add air to my trailer tires. My tire gage works to check the pressure but my compresser won't add air. I'm about 3 psi low. TP should be 65psi. I've tried two different fill attachments with no luck. Compresser output is set to 100 psi so that isn't the problem. The two attachment work just fine on the truck, mower, etc. Is there something about the valve stems I'm missing. The tires are nitro filled originally.
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Old 08-07-2012, 06:24 PM   #2
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I have to say that is a tough one.
I wish I had an answer for you.

Do the tire stems have a TPMS cap on them?
Did some one fill them with crazy glue?
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Old 08-07-2012, 06:27 PM   #3
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I've had similar issue with some valve stems. Sometimes I have to move fitting around a bit, different angle or press it on extra hard.

Maybe the nitrogen filled tire is rejecting the plain old air you're adding!

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Old 08-07-2012, 06:48 PM   #4
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Originally Posted by 1Texan View Post
Why can't I add air to my trailer tires. My tire gage works to check the pressure but my compresser won't add air. I'm about 3 psi low. TP should be 65psi. I've tried two different fill attachments with no luck. Compresser output is set to 100 psi so that isn't the problem. The two attachment work just fine on the truck, mower, etc. Is there something about the valve stems I'm missing. The tires are nitro filled originally.
If you have a valve stem tool, you can remove the center and replace with a different one or at the very least, back the present one out a little and then back in.
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Old 08-07-2012, 06:49 PM   #5
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It has to be something simple.
If you are using a cheaper portable air compressor, I have also had trouble with them. If it is a regular air compressor with replacable tips, I would go get a brand new one, and a good one. Some of them are garbage as well.
Let us know what you find. Thanks!
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Old 08-07-2012, 07:14 PM   #6
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I would first say insufficient air compressor. Unless your compressor is capable of 100 PSI. It may not be big enough to overcome the pressure in the tires.
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Old 08-07-2012, 07:16 PM   #7
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I would first say insufficient air compressor. Unless your compressor is capable of 100 PSI. It may not be big enough to overcome the pressure in the tires.
OP stated his compressor is giving 100psi.
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Old 08-07-2012, 07:36 PM   #8
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Originally Posted by dunnnc View Post
OP stated his compressor is giving 100psi.
Op stated compressor is set to 100psi, that dose not mean the compressor is capable of delivering a continuous 100psi that would need to be delivered to inflate tires, sounds like it may not be able to drive a continuous 65psi.
Not to say stem is not bad, but both the stem has to be good and the compressor capable of delivering the air at the pressure required.
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Old 08-07-2012, 07:44 PM   #9
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Originally Posted by camper_Lucy View Post
Op stated compressor is set to 100psi, that dose not mean the compressor is capable of delivering a continuous 100psi that would need to be delivered to inflate tires, sounds like it may not be able to drive a continuous 65psi.
Not to say stem is not bad, but both the stem has to be good and the compressor capable of delivering the air at the pressure required.
OP says it works on his truck... so I don't think the compressor is at fault. Bad valve stem inside or it's screwed in too far.
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Old 08-07-2012, 07:52 PM   #10
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I remember a campfire story about a similar incident that "long story short" was caused by the "guy" failing to say he had used "Fix-a-Flat" to seal his old trailer tires and now he can't put air in the valve stem. The goop had hardened in the valve.

I hope this is not a similar case. I am sure it is not since his camper is new.
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