Does Gumout Fuel System Cleaner Work (Follow up)?

This is the second test for Gumout All in One fuel cleaner to see if it actually removes carbon deposits. I use a mini borescope camera to look into the engine and see how dirty the engine is after the second fuel treatment.

Here is the First Video: https://www.youtube.com/watch?v=5SoZnymBSC8

CONCLUSION:
I followed the instructions on the container and Gumout fuel cleaner did a great job cleaning the shiny, sludge buildup, but did not work as well as I would have thought on the clumps of hard carbon buildup. Even after two bottles in a row, it did not clean the cylinders as much as I thought it would since they do say one bottle will clean the engine.

Here is the fuel cleaner I used: http://www.amazon.com/gp/product/B004AYTRU6/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B004AYTRU6&linkCode=as2&tag=chri0e2-20&linkId=RR7WMPOEKFYJEVRA
Here is the borescope camera I used: http://www.amazon.com/gp/product/B00JERRES6/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00JERRES6&linkCode=as2&tag=chri0e2-20&linkId=PWJIOJANWO4OKX7I

Gumout Test: https://www.youtube.com/watch?v=5SoZnymBSC8
Seafoam Test in Lawnmower: https://www.youtube.com/watch?v=WdT4DPFXIkM
Seafoam Test in a Car: https://www.youtube.com/watch?v=u6UeJXkzDW8
Techron Test: https://www.youtube.com/watch?v=h8i9qftqKNY
Lucas Deep Clean Test: https://www.youtube.com/watch?v=FLhXqgEEYyI
CleanBoost Maxx Test: https://www.youtube.com/watch?v=VDUogAQzLAc

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Closed Caption:

hey guys chrisfix here and today i'm
going to be doing the follow-up video
for the gum out fuel cleaner test if you
haven't seen the previous video
go check that one out I go into all the
details on how i do my test and that
video i just use one container and I go
through the before and after
so before I didn't use any fuel cleaners
and I show what the inside the engine
looks like and then the afters after i
use one fuel cleaner from come out using
their instructions this follow-up video
is using another bottle of gum out you
guys said well maybe since this is the
first time you use the gum out
it didn't get completely cleaned just
because it's the first time using it you
know things need to get loosened up and
if you use it the second time it might
work better
so I want a total of five hundred and
twenty four miles and you can see over
here that my guess is all the way empty
so I used every drop of that fuel
additive
so I've run two things of gum out on one
through my engine and a total of over
500 miles
so let's check it out and see if we got
any difference in results
so just to be clear we're looking for
carbon deposits in the combustion
chamber which come out says on the
bottle should be cleaned up and also it
says you'll see these improvements in
just one use
so this is my second use so i should
really see improvements so i just want
to point that out again even though if
you seen any other video
let's check it out ok so let's take the
borescope camera
let's go in the cylinder number one and
let's see if we have any better results
cylinder number one so let's see here
just taking a look at it real quick it
doesn't look any better I still see
carbon but let's go check out the before
and after
ok when looking at the before and after
it does look like some of the carbons
getting broken up right in the middle on
the after you can see that there's a big
spot where the carbon has broken off but
it's nothing significant
so let's go check out to see if there's
anything in cylinder - okay when we
first look this actually looks pretty
good
let's go check out the before and after
ok before and after looks about the same
the carbon chunk on the right does look
like it got a little bit smaller
you can kind of see when you compare the
before and after that some of the carbon
is getting reduced so we're not getting
anything significant but we are getting
some carbon reduction
that's enough the cylinder - let's check
out cylinder three
so I can still see
carbon cylinder three let's check out
the before and after so cylinder three
seems like it actually got worse
which is interesting maybe the before
actually just looks cleaner than it
really is
and the after is some carbon getting
broken down so you can see more of the
carbon since it's not flat and smooth
but i'm not sure it's kind of hard to
tell so let's move on so that cylinders
13 let's check out cylinders four
through six
ok cylinder for let's check out the
before and after this looks about the
same actually the carbon buildup on the
edge does look a little bit better
not much again not significant but there
seems to be some cleaning
let's get a cylinder for checkout
cylinder five
ok that carbon still there let's see a
before and after
now when we're looking at the before and
after if you look at the right of the
screen you can see the actor has less
carbon so some of that carbon was
cleaned up
this is probably the most significant
change that we've seen so far but still
most of that carbon is left in that
cylinder so it's nothing significant
let's get a cylinder five and check out
the last cylinder cylinder number six
this actually looks pretty good let's
get a before and after
it's hard to tell if there's any real
difference here I mean the biggest thing
is there's still a lot of carbon in
their carbon buildup is not gone
piston is not completely cleaned or even
halfway cleaned or or even a quarter of
the way cleans so I think that just
gives us a pretty good idea after round
two of gum out what kind of results you
should expect when using it
so after round two of the test where I
used another bottle
what do I think well the facts are I ran
two bottles of gum out all in one for a
total of five hundred miles to try to
clean the engine and I really didn't see
any difference in results compared to
the last video actually in the last
video it seemed that there might have
been more results with the engine seemed
to get cleaner and that might be due to
the fact that this is the first time
that ever used an engine fuel system
cleaner
so anything that was loose and dirty did
get cleans and left the hard carbon
deposits that are really baked on
so we don't really see much of a
difference this time we did see a small
amount of hard carbon deposits get
removed which is better than the first
test where we didn't really see any of
that hard carbon deposits get removed
but it was really so small it was
insignificant
overall I think come out on one
its place but what it says on the bottle
and the result I got
we're not the same this test was
specifically for carbon deposits and I
think it's safe to say we didn't get the
results shown on the bottle
don't get me wrong this stuff might work
great for fuel injectors and I'm sure it
does keep corrosion at a minimum in the
engine and fuel system but as for carbon
deposits
I was pretty disappointed on the
cleaning capability maybe if this stuff
is used for every Philip 10 to 15 times
in a row you'll notice similar results
shown on the bottle but with one or even
two bottles you will not see those
results
you saw the before and after both videos
and it does remove that soft sludgy
carbon really well but it doesn't remove
the hard carbon deposits don't think you
put a bottle of this in your engine and
it will be clean afterwards but i'm
still on the hunt to see if we could
find a good engine cleaner that will
clean out the engine
i'm going to be doing the water spray
test soon see if we get some water
inside that intake
we know that head gasket leaks caused
the engine to get steam cleans what
happens on a short-term when we're
spraying water in the intake does it
actually steam clean the engine at all
what will find that out will also be
testing seafoam and this tetra on fuel
cleaner a lot of you guys said that this
stuff is really good
and obviously everybody knows about sea
foam we'll see if these two things
actually do anything
and also have some Lucas fuel cleaner
which is actually being tested right now
in another car
we'll see if that does anything and some
cool videos upcoming so stay tuned
if you haven't subscribed hit that
subscribe button and you get updates on
when I make these videos and also other
how to videos also give this video a
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I'm really excited to try these two out
especially the sea foam
everybody liked seeing the sea phone
smoke up so we'll see what happens