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Valve Stem?
Looked at the P-CAR this AM and saw front drive side tire flat. My first flat in the P-CAR. At least it was in the garage. Anyway, I filled the tire and it held it's pressure. However, as I was putting on the valve step cap I noticed air coming out if I bent it. I have never had a valve stem go bad before - on any car. Do they or is this some other issue? Thanks for the input!
Jason 88 CAB |
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07-26-2003, 12:52 PM
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Join Date: Nov 2002
Posts: 1,955
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The little internal mechanism in your valve stem has come loose.
You can tighten it. I have a special little tool that you just stick into the valve stem and turn to tighten. You may be able to do it somehow without the tool, or just go to any tire shop and they'll tighten it for you in 5 seconds. |
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07-26-2003, 12:54 PM
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Never knew that...thanks! This board is amazing. Only took 3 minutes to get a answer.
Jason 88 CAB |
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07-26-2003, 12:57 PM
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Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,781
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Quote:
BTW, the valve stem caps that have the little fork on the top are the tightening tool. |
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07-26-2003, 03:58 PM
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Zeke is right - I missed the part about it only leaking when you bend it.
I think you should replace the valve stem. It may have a cut or other defect on it. It's an easy job for a tire shop. |
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07-26-2003, 04:11 PM
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k...thanks guys....a 5 minute job....but an hour wait at the tire store. I always hate going to those places.
Jason 88 911 Cab |
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07-26-2003, 06:37 PM
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this happened to me b/c wen the shop mounted the tire, the tire mounting machine knock them stem an loosened the seal. the front left tire deflated while i was making a right hand turn and almost put me into a tree... def take it to a shop and have it replaced.
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07-27-2003, 05:50 AM
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Diss Member
Join Date: Jul 2002
Location: SC - (Aiken in the 'other' SC)
Posts: 5,020
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Having a valve stem fail like this isn't that uncommon as the factory made an upgrade just for it.
Check out this thread > http://forums.pelicanparts.com/show...?threadid=96192 I very highly recommend ditching the rubber valve stems on every car you own. I have had rubber valve stems fail on two cars and a truck. I have never heard of a steel valve stem failing. Wayne |
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07-27-2003, 06:28 AM
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Any rubber product will deteriorate w/ age, tires, valve stems, gaskets, anything. They get hard and brittle, this is why older tires even w/ good tread life often feel terrible and are noisy. New valve stems should be installed whenever new tires are installed.
While I also like the short metal stems, they also have rubber gaskets which will fail w/ age. These should also be refreshed when the tires are changed or at least every 5yrs or so. Don’t forget to use good caps w/ proper seals. The cheap plastic ones on most cars are useless in this regard.
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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07-27-2003, 10:06 AM
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1976 Porsche Carrera 3.0
1995 Porsche 993 Carrera Coupe
