(bright music)
- Hey guys welcome back
to my small engine repair channel,
today I've got a tool that Walbro sent me.
This is a tool that you guys
have been asking me for many years,
what pressure tester do you use
for carburetors in your videos?
Well, this is the exact same tester
that you've seen in the many videos.
So when Walbro offered to send me one,
I said, yes, because I know they are of good quality
and I know that my viewers out there
like you guys will appreciate that
because you guys have been asking me for many years.
Now, this OEM pressure tester
will cost you a lot more than the offshore ones
but I can assure you guys that it's well worth the money.
Now here's a close-up look at it.
It does feel of good quality
and from what I understand
this tester here is made in the United States.
It is part number 57
dash 11 dash one.
It's called the pressure gauge,
you can use this tool
to pressure test your two cycle carburetors,
which is what I often do once I rebuild them.
Now, what you will get
with this pressure tester is the unit
and also this little connector here or adapter.
It goes from a bigger connector here to a small one,
so I'll show you how to deal with that
in a few seconds here.
So when you get this tester guys
what I do recommend is that you get a fuel line,
preferably at three sixteenths or quarter inch,
connect the fuel connector here to the tester like this
and then put on a one eighth inside diameter fuel line
because this is the most common fuel line
that you will need to test these carburetors.
It'll basically fit on 99%
of the two cycle carburetors you will be testing.
Now, if you are testing a four cycle carburetor
they have a bigger fuel connector,
so you would want to just basically disconnect
the small connector here
and connect directly to those carburetors.
Now, before you pressure test your carburetor
you wanna make sure that the brass knob
is screwed in all the way up here
or else it will leak.
Now, once you have the carburetor connected
to the pressure tester
you wanna pump it up to about five to seven PSI,
you don't wanna go any higher than that
because you could cause damage to your carburetor.
So I'll just slowly pump it up here
and what you wanna look for when you test the carburetor
is that the needle stays where it is.
Now, you can have a little bit of loss here over time
but you don't want it to go down immediately.
So as you can see here I'm at about six to seven PSI,
it is slowly coming down
which indicates here that this carb is good,
if you see the needle come down pretty quickly
it's actually showing
that you have a problem in your carburetor.
And after you had done your test,
to release the pressure
you just unscrew that brass knob here
and it'll go right back down to zero.
So when you pressure the carburetor
what you are doing is testing the integrity
of the needle valve.
So basically you wanna make sure
that the needle valve is doing a proper seal.
So what I'm going to do now
is pump it up to about five to seven PSI again
and as you can see it's holding the pressure.
And if I push the metering lever
which would bring the needle valve up from the seat
it'll release the pressure.
So basically when you test the carburetor
that's what you wanna do,
is make sure that the needle valve is seating properly.
Now, another quick tip
when you pressure test these carburetors
with this Walbro tester
is you can put them inside water or gas,
pump it up to about seven PSI, five to seven,
and what you wanna look for
are bubbles coming out of the carburetor.
If you don't see any bubbles, that's a good sign,
that means you have no leaks.
In this case, we see no bubbles
and the pressure tester is holding the pressure,
which is awesome.
And again, to release the pressure
just turn out the brass nob.
So just to show you how important it is
to pressure tests your carburetors,
I put out a video a little while back
and what I was doing is pressure testing the carb.
And you could see a leak
where they connector connects on the carburetor.
So it just shows
that it's important to pressure test your carburetors guys
because you can rebuild the carb
but if you have a leak somewhere
you are going to be messing around
with your chainsaw for hours and hours
until you locate where the leak is.
So again, it's really important
to have a professional tester like this in your shop
because if you do a lot of small engine repair
you wanna good tester that will help you
to diagnose equipment quickly.
And by the way, you can use this pressure tester
on any two cycle carburetors,
they don't have to be Walbro
you can use them on Zama carburetors as well.
I've got one here in the shop, it's an older car
but it's got one connector
and you can also test other things as well,
you can also test the integrity
of fuel lines on chainsaws as well
with this pressure tester.
I do have all the links to the videos I made
with this tester underneath the video.
The reason I like to get good tools and OEM tools
is because if I do have an issue
I'm not second guessing that the tester
or the part I put on the machine
or whatever I'm using to fix the machine
is part of the problem.
So if I pressure test the carburetor
with this OEM Walbro tester
I know it's giving me a proper reading
unlike some other cheap testers I've used in the past.
Now you guys are probably wondering
where can I get this tester?
Well, any small engine shop
or online parts seller that's a Walbro dealer
will be able to get it to you.
You wanna provide them with the part number,
it'll make it a lot easier for them.
And if you still can't find one guys
after contacting your local small engine shop
you might wanna check online
and also maybe call Walbro,
they may be able to help you
and let you know where some dealers
may have some of these left in stock.
So this'll be it for the video guys
if you know where these are readily available
please comment below the video
because a lot of people have been asking
about these pressure testers.
Again, I do recommend that
if you can afford it to get the OEM one
because it'll be the last one you buy
and then you don't need to worry
about false readings when you pressure test carburetors.
Thanks for watching guys
make sure to subscribe
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and have a great day.
(bright music)