Why is my tire losing air
Finding a leak in a tire: Why your tire keeps losing air
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hey guys danny johnson here and i was
having a little issue with the yukon it
kept losing tire pressure in one of the
tires so i kept seeing it come up on the
dash and
i couldn't figure out why it was losing
air pressure and so here's some things
you can do first of all i had my brother
come through and he was watching the
wheels i slowly drove to look for any
nails in case maybe i just didn't see a
nail
that was in there you know maybe was on
the bottom when i was looking at it and
so as i drove slowly he looked um but
ultimately he didn't find anything so
what i did is i broke all the lug nuts
loose i lifted the truck into the air
placed it securely on a jack stand and
there's a metal you know frame that goes
through there that's where you want to
lift and put the jack on there just make
sure you don't
mess up the side of your car here and
with it just off the ground enough i was
able to remove the lug nuts and take the
wheel off now from here you want to look
at the wheel at all angles it's
uh and there's a lot of rocks that
you'll see that are stuck in here so you
want to take a screwdriver and just kind
of break them free because sometimes a
small
screw or nail stud
you know maybe the tip of the nail or
the head of the nail is broken off and
it's just a piece of metal that's in
there and it can look like a rock so i
didn't see anything there so the next
step is to spray water
or even soapy water whatever you want
inside of this just all the way around
the wheel rim and especially over the
valve stem
and this is a a good design here where
it'll actually puddle around the valve
stem so that helps now i was really
suspicious over here where the wheel had
been curb checked thinking that that
might have messed the wheel up enough
where it wasn't sealing properly but
didn't see anything there and just
continued to fill the whole
area in there with water and let it sit
and now
over here with the valve stem i had it
filled in and i was moving the valve
stem around to see if any bubbles were
coming out because it could have been
about a bad valve stem at the base and
you also want to spray into the head of
the valve stem and look in there now
there's obviously a lot of bubbles if
you're using soapy water but when you do
find a leak it will be very apparent so
here there was nothing
wrong with the the valve stem itself it
checked out pretty good and so uh what i
did next
was flip the wheel over and repeat the
same process filling it in with water
around the rim here
and as i went around i was able to find
the problem you could see it very very
clearly here bubbling out and so you can
see there's a small crack in the rim
right there and so that's letting air
escape as it's not sealing so uh like i
said you'll see bubbles with the soapy
water
or whatnot but this will be apparent
like this if you had a nail in the tire
and you're spraying it down you'd see
the same thing but that's very apparent
it shows you exactly what's happening
and so obviously the the rim is cracked
you'd want to look all the way around
the rim here in the inside just the
whole wheel you're trying to find a
crack and you will see the air coming
out of it just like this this was losing
about 5 psi every day so it was a very
small leak but it's enough that over
time it was uh it was leaking
and depending on where the tire was on
the ground or
or not it may have even
leaked slower or faster
so how did this happen well there's a
few things that could have happened this
is where they will mount a lot of the
tire
weights they kind of punch them on there
and maybe that broke it it could have
been from going over a curb really bad
or something this is a used car for me
so
anything could have happened but you
just want to look everywhere
now the next step after this when your
wife is gone is to take the wheel into
your bathtub if you don't have a trough
big enough and uh just submerge the tire
till you see that bubbling out so the
next step from here is to find a
replacement rim i might just look for
new wheels in general but uh my problem
here looks like it's going to be about
200 problem after getting the the tire
swept switched over to a new rim but
anyway that's what i found and hopefully
this can help you figure out where your
leak is coming from if you can't find
you know very obvious nail in the tire
or
you know anything like that so put in
the comments if you have any other
questions or if you've had a similar
experience thanks for watching