| Author |
Message |
Guest
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 Posted:
Sat Jan 08, 2005 1:15 pm Post subject:
What to clean out carburetor varnish |
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I got a 5HP Tecumseh engine on a snowblower and the catburetor is
varnished up. I can tell from the smell of the old gas. There was no
gas in the tank but must have been some in the carb bowl and gas line.
At first it would not start at all, but after turning the needle on
the bottom of the bowl, I got it to start. Although it will keep
running, I must keep it aprtly choked or it dies. If I attempt to put
it to some snow, it dies right away.
I put some spray carb cleaner in the gas (new gas), and left it run
for an hour. The running has smoothed out, but it still needs to stay
halfway choked and still dies under load.
Is there a better carb cleaner, or something like laquer thinner that
I can add to the gas to clean it while it runs? If this is not
possible and I must tear the carb apart, is there a way to do it
without a rebuild kit? I am asking this because I live in a rural area
and am snowed in. I cant just get a kit, and even if I could get out
of here, I'd still have to order the kit. I'm thinking of just
removing the bowl and cleaning it and the needle. If I do tear it
apart, what is the best thing to remove the crud, just the spray carb
cleaner, or is there something better?
I have the spray cleaner and laquer thinner on hand.
One other thing. How many turns from the stop (finger tight) should
the needle be backed out for the initial starting. I am just guessing
now.
PS. I can leave it idle till it runs out of gas if there is a way to
disolve the crud while it runs, which is what I prefer, since I have
no way to get parts.....
All help appreciated.
Thanks
Mark
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effi
Guest
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| Posted:
Sat Jan 08, 2005 3:23 pm Post subject:
Re: What to clean out carburetor varnish |
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try running it longer, that should clear it out eventually and it should
smooth out and accelerate normally under load
if not the carb will have to be rebuilt or at least cleaned, taking one
apart you may have gaskets that could be broken even if properly
disassembled, so go real real slow if it gets down to you HAVING to try
this,,,best to get someone experienced to rebuild or clean it
<maradcliff@UNLISTED.com> wrote in message
news:3u3vt05i3ko7anohpcpc1ea1a72cua5qm9@4ax.com...
| Quote: | I got a 5HP Tecumseh engine on a snowblower and the catburetor is
varnished up. I can tell from the smell of the old gas. There was no
gas in the tank but must have been some in the carb bowl and gas line.
At first it would not start at all, but after turning the needle on
the bottom of the bowl, I got it to start. Although it will keep
running, I must keep it aprtly choked or it dies. If I attempt to put
it to some snow, it dies right away.
I put some spray carb cleaner in the gas (new gas), and left it run
for an hour. The running has smoothed out, but it still needs to stay
halfway choked and still dies under load.
Is there a better carb cleaner, or something like laquer thinner that
I can add to the gas to clean it while it runs? If this is not
possible and I must tear the carb apart, is there a way to do it
without a rebuild kit? I am asking this because I live in a rural area
and am snowed in. I cant just get a kit, and even if I could get out
of here, I'd still have to order the kit. I'm thinking of just
removing the bowl and cleaning it and the needle. If I do tear it
apart, what is the best thing to remove the crud, just the spray carb
cleaner, or is there something better?
I have the spray cleaner and laquer thinner on hand.
One other thing. How many turns from the stop (finger tight) should
the needle be backed out for the initial starting. I am just guessing
now.
PS. I can leave it idle till it runs out of gas if there is a way to
disolve the crud while it runs, which is what I prefer, since I have
no way to get parts.....
All help appreciated.
Thanks
Mark |
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MisterSkippy
Guest
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| Posted:
Sat Jan 08, 2005 7:04 pm Post subject:
Re: What to clean out carburetor varnish |
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On Sat, 08 Jan 2005 02:15:23 -0600, maradcliff@UNLISTED.com wrote:
| Quote: | I got a 5HP Tecumseh engine on a snowblower and the catburetor is
varnished up. I can tell from the smell of the old gas. There was no
gas in the tank but must have been some in the carb bowl and gas line.
At first it would not start at all, but after turning the needle on
the bottom of the bowl, I got it to start. Although it will keep
running, I must keep it aprtly choked or it dies. If I attempt to put
it to some snow, it dies right away.
I put some spray carb cleaner in the gas (new gas), and left it run
for an hour. The running has smoothed out, but it still needs to stay
halfway choked and still dies under load.
Is there a better carb cleaner, or something like laquer thinner that
I can add to the gas to clean it while it runs? If this is not
possible and I must tear the carb apart, is there a way to do it
without a rebuild kit? I am asking this because I live in a rural area
and am snowed in. I cant just get a kit, and even if I could get out
of here, I'd still have to order the kit. I'm thinking of just
removing the bowl and cleaning it and the needle. If I do tear it
apart, what is the best thing to remove the crud, just the spray carb
cleaner, or is there something better?
I have the spray cleaner and laquer thinner on hand.
One other thing. How many turns from the stop (finger tight) should
the needle be backed out for the initial starting. I am just guessing
now.
PS. I can leave it idle till it runs out of gas if there is a way to
disolve the crud while it runs, which is what I prefer, since I have
no way to get parts.....
All help appreciated.
Thanks
Mark
|
I've had good luck using carb/ fuel injector cleaner that you would
normally add to the gas tank. Drain all the gas out, then start and
run it dry. Put a few ounces into the gas tank, pull the plug wire,
then give a few pulls on the starter to get the stuff into the carb.
Let it sit for an hour or so. Fill with fresh gas and start. That's
worked for me on a couple of lawnmowers that others had given up for
dead and, more recently, a pressure washer. If that "fix" doesn't work
you'll have to pull the carb and inspect the internals. You might put
in a new spark plug while you are at it to eliminate another variable.
FWIW
YMMV
DFB
"When a legislature undertakes to proscribe the exercise of a citizen's
constitutional rights it acts lawlessly and the citizen can take matters into
his own hands and proceed on the basis that such a law is no law at all."
- Justice William O. Douglas
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Mike Romain
Guest
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| Posted:
Sat Jan 08, 2005 7:07 pm Post subject:
Re: What to clean out carburetor varnish |
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MisterSkippy wrote:
| Quote: |
On Sat, 08 Jan 2005 02:15:23 -0600, maradcliff@UNLISTED.com wrote:
I got a 5HP Tecumseh engine on a snowblower and the catburetor is
varnished up. I can tell from the smell of the old gas. There was no
gas in the tank but must have been some in the carb bowl and gas line.
At first it would not start at all, but after turning the needle on
the bottom of the bowl, I got it to start. Although it will keep
running, I must keep it aprtly choked or it dies. If I attempt to put
it to some snow, it dies right away.
I put some spray carb cleaner in the gas (new gas), and left it run
for an hour. The running has smoothed out, but it still needs to stay
halfway choked and still dies under load.
Is there a better carb cleaner, or something like laquer thinner that
I can add to the gas to clean it while it runs? If this is not
possible and I must tear the carb apart, is there a way to do it
without a rebuild kit? I am asking this because I live in a rural area
and am snowed in. I cant just get a kit, and even if I could get out
of here, I'd still have to order the kit. I'm thinking of just
removing the bowl and cleaning it and the needle. If I do tear it
apart, what is the best thing to remove the crud, just the spray carb
cleaner, or is there something better?
I have the spray cleaner and laquer thinner on hand.
One other thing. How many turns from the stop (finger tight) should
the needle be backed out for the initial starting. I am just guessing
now.
PS. I can leave it idle till it runs out of gas if there is a way to
disolve the crud while it runs, which is what I prefer, since I have
no way to get parts.....
All help appreciated.
Thanks
Mark
I've had good luck using carb/ fuel injector cleaner that you would
normally add to the gas tank. Drain all the gas out, then start and
run it dry. Put a few ounces into the gas tank, pull the plug wire,
then give a few pulls on the starter to get the stuff into the carb.
Let it sit for an hour or so. Fill with fresh gas and start. That's
worked for me on a couple of lawnmowers that others had given up for
dead and, more recently, a pressure washer. If that "fix" doesn't work
you'll have to pull the carb and inspect the internals. You might put
in a new spark plug while you are at it to eliminate another variable.
FWIW
YMMV
DFB
|
I also have had good luck with the above method. This gets the carb
cleaner right inside the carb in a strong solution and a good clean plug
always helps.
I also would check the mounting nuts for the carb. If they have come a
bit loose, you will need the choke on to run.
If it still needs more cleaning, then removal is in order. Use the carb
cleaner inside and try to get it into any passages. I would watch out
for the lacquer thinner, it might damage plastic or 'rubber' seals or
parts.
I don't know the needle settings, but when in doubt I usually start
around 3 turns out to see what happens and adjust from there. If in
doubt I like to err to the rich side. Carbs will run rich and sputter
out if too lean.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's |
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glockdoc
Guest
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| Posted:
Sat Jan 08, 2005 8:31 pm Post subject:
Re: What to clean out carburetor varnish |
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Sounds like the main jet is clogged. If it has a bowl, it's possible
the bolt that holds the bowl onto the carb has the main jet built into
it, you will see the holes drilled into its side after removal. Just
clean them out with a toothpick or small piece of wire. good luck |
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Eric
Guest
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| Posted:
Sun Jan 09, 2005 7:48 am Post subject:
Re: What to clean out carburetor varnish |
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maradcliff@UNLISTED.com wrote:
| Quote: | I got a 5HP Tecumseh engine on a snowblower and the catburetor is
varnished up. I can tell from the smell of the old gas. There was no
gas in the tank but must have been some in the carb bowl and gas line.
At first it would not start at all, but after turning the needle on
the bottom of the bowl, I got it to start. Although it will keep
running, I must keep it aprtly choked or it dies. If I attempt to put
it to some snow, it dies right away.
I put some spray carb cleaner in the gas (new gas), and left it run
for an hour. The running has smoothed out, but it still needs to stay
halfway choked and still dies under load.
Is there a better carb cleaner, or something like laquer thinner that
I can add to the gas to clean it while it runs? If this is not
possible and I must tear the carb apart, is there a way to do it
without a rebuild kit? I am asking this because I live in a rural area
and am snowed in. I cant just get a kit, and even if I could get out
of here, I'd still have to order the kit. I'm thinking of just
removing the bowl and cleaning it and the needle. If I do tear it
apart, what is the best thing to remove the crud, just the spray carb
cleaner, or is there something better?
I have the spray cleaner and laquer thinner on hand.
One other thing. How many turns from the stop (finger tight) should
the needle be backed out for the initial starting. I am just guessing
now.
PS. I can leave it idle till it runs out of gas if there is a way to
disolve the crud while it runs, which is what I prefer, since I have
no way to get parts.....
All help appreciated.
Thanks
Mark
|
GumOut is probably the best carb cleaner around, but you might have
additional problems that cleaning wont solve.
Eric
--
Byte=8 bits, a kilobyte is 1024 bytes
There is no such thing as a kibibit,mebibit etc |
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kejj
Guest
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| Posted:
Mon Jan 10, 2005 6:51 am Post subject:
Re: What to clean out carburetor varnish |
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| The best I've ever used is a product called Sea Foam |
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