One of my rear tires leaked down 3 psi (95 to 92) over 72 hours. Is that too much? Should I have it pulled off and checked? or just keep and eye on it? I would not think there would be a nail puncture.
Will tire sealant work on truck tires for small leaks?
thanks,
Rick
If it was from hot to cold temps, that would not be an issue. If you checked them at the same temps it needs to be repaired. It is sometimes just the valve core leaking check that.
Will the bead hold if I change the valve core?
Usually just need to tighten it, not remove it.
Tool looks like this: Tire Valve Core Tool - Walmart.com (https://www.walmart.com/ip/Tire-Valve-Core-Tool/25356149?wmlspartner=wmtlabs&adid=22222222222019592763&wmlspartner=wmtlabs&wl0=e&wl1=o&wl2=c&wl3=10374970262&wl4=pla-1105723506893&wl12=25356149_10000001272&wl14=tire%20core%20tool&veh=sem)
Should be able to find one at any auto parts store.
Also a high quality metal valve cap can prevent leak down.
You can change the valve core without losing the bead as it takes more time to leak down than switching the cores. As posted above maybe just loose and needing tightening.
Possible valve core damage from poor tire gauge or just old and leaking. Check for air leak with a little soapy water on the stem. You will be able to see bubbles. If leaking, you can use the tool to tighten or remove the core and replace with a new one before it leaks even five pounds.
I would check for a nail if above does not fix it. Drive a foot or so and inspect. Mark tire and repeat until you have checked the entire circumference.
Pierce
3 PSI could be explained by a temperature drop. That would not be enough that I would do more than a "soap bubble test" of the valve core and where the valve stem meets the rim and do a quick inspection for a nail in the tire.
Thanks all, I did tighten the valve almost a 1/4 turn, forgot to bubble test it first though, duh.....Will do a visual tomorrow
Of course, temp change will affect all of the tires, until the sun hits some of them.
In West TX, sitting in our driveway, I regularly see 10+ PSI difference in tire pressure between the sunny and the shaded side of the coach.
Also the inner tire and outer tire pressures on the rear duals can vary quite a bit on the sunny side.
Best time to check tire pressure is early in the morning before the sun hits any of the tires. Set them when they are cool, and then don't "sweat" the temp-induced pressure changes the rest of the day.
I check my tire temps every time I take a break when travelling. Have found tire temps sometimes 20 f warmer on sunny side of coach.