Tires not taking in air from compressor

[lbirdie123]

I have just gotten a slightly used 2017 Georgetown 335DS. Trying to put air in tires from a 4gal./135psi compressor. I can check the air at about 78 pounds, but can't put air in the tires. I can put air in my truck tires. Question - Do I need a bigger air compressor?

[Bama Rambler]

If the compressor is pumping up to 135 PSI then you should be able to pump air into the tires up to that point. Does that compressor have a outlet regulator that's turned down?

Also, sometimes the chuck head doesn't depress the core valve enough to allow air to pass. You may want to try a commercial air chuck.

[ependydad]

I would think that 80psi should be fine with that air compressor.

I had a pancake compressor rated up to 150psi that wouldn't push air in over 108psi (fifth wheel, not Georgetown- but still high pressure was needed). It did find up to 80psi which my previous tires had been.

[ScottBrownstein]

I too have a 335DS and aim for 92 PSI cold. You need to turn the regulator up all the way and have a good air chuck. It will take a little longer than you think since my pancake compressor will only go up to a little more than 100 PSI...but it will work.

[llr]

try a different chuck, I have some that won't work with some tires and will with others

[Delco Bobby]

Originally Posted by llr

try a different chuck, I have some that won't work with some tires and will with others

X2

I have a collection of air chucks. Some highly recommended brand name and some not.

Which brands are consistently reliable?

[poppytoymaker]

I have one flow thru TST sensor that does the same thing, won't go past 78lbs. I have to take the sensor off to get a few more pounds

[twoclaws]

Had 3 gal 125 compressor and tires required 80 psi. Once the volume used in in tank had to stop and wait until pressure built up again to 110 the resume filling tire then stop for pressure to build in tank. Your compressor may not be adequate to handle your needs

[ependydad]

Originally Posted by lbirdie123

Question - Do I need a bigger air compressor?

If you do end up getting another air compressor, the Viair products are fantastic (and a little spendy).

Product Review: Viair 450P 12v air compressor | Learn To RV

[Thurman]

Two things: 1) X3 on the air chuck. I also have a nice collection of air chucks, some work on some tires, some won't work on any tires. Do yourself a favor-go buy a good air chuck tool that has the tire pressure gauge built into the tool, the type gauge that goes in and out of the handle. 2) As far as regulators go, I have worked on air compressors for years. I have found many regulators that would not be anywhere accurate out of the box. Just because the gauge shows, say 80#, that does not mean the regulator will allow 80# of pressure into your tire. This is where a good quality tire gauge is your best friend. At this point I would recommend that you turn the handle on the regulator all the way out so that no air will come out of the regulator and see what your gauge is reading.

[duby325]

I had similar problems with my pancake compressor and found the the brass hose fitting, where the hose attaches to the compressor, had corroded and would not let enough air flow.

[lbirdie123]

Thanks for all the suggestions. Will be buying a new 1 or 2 air chucks tomorrow morning. Hope to have one that works.

[spock123]

My pancake air compressor works like this, bleed the air out of the compressor until the motor comes on. Then the air compressor will pump up my tires. My air compressor will pump to 125 lbs, my tires are 110 lbs. If I try to go from 100 lbs to 110 lbs the motor has to be running

[babock]

Originally Posted by ependydad

If you do end up getting another air compressor, the Viair products are fantastic (and a little spendy).

Product Review: Viair 450P 12v air compressor | Learn To RV

Just ordered one based on your recommendation! I have been wanting to get one of these.

[ependydad]

Originally Posted by babock

Just ordered one based on your recommendation! I have been wanting to get one of these.

Merry Christmas!

[babock]

Originally Posted by ependydad

Merry Christmas!

Better than the 3 toilets I bought a few Christmas's ago for my house.

[Wolverine 1945]

Originally Posted by lbirdie123

I have just gotten a slightly used 2017 Georgetown 335DS. Trying to put air in tires from a 4gal./135psi compressor. I can check the air at about 78 pounds, but can't put air in the tires. I can put air in my truck tires. Question - Do I need a bigger air compressor?

I have found that I often have to lube my air chucks !!!
A drop of oil will usually do the job !!!

[Paulie1138]

Chuck lube? is this going to start an oil brand war?

[Paulie1138]

On the serious side, as others have said, check your chuck, and be sure your regulator is set higher than your PSI needs.

[wanderingbob]

also , volume should enter the discussion , just because a compressor has 135 lbs pressure the small pressure tanks will limit your speed of fill . All SCUBA divers know that air can be compressed and a motorhome tire might require 30 or 40 cubic feet of air , from your 4 gallon tank ! It is possible that at some point your compressor has equalized with the very much reduced pressure in the small tank and from that point the compressor must fill your small tank and the much larger tire .
I do not know if I have ' splained " this correctly , but under stand that VOLUME is equally as important as pressure .