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Page last
modified: 09/03/08
Common Problems/Questions
Note: Email addresses
and links listed in this Q&A section may no longer be valid!
The Most Common GS Problems
The first thing to note with Suzuki GS's is that
there are four common problems that occur.
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Fuel problems caused by leaving gas in the
carbs when storing it.
This causes like the engines failure to keep running once the
choke is off, no power when cracking the throttle, gas pouring
out of the carbs.
The fuel problems occur quite often in GS carbs because they
have small fuel delivery passages which block easy when gas is
left in them. This causes lacquer to form in the passages
thereby blocking them up. It doesn't take long for a bike to
stand to experience this problem, in some cases 4
weeks. The solution is to dismantle the carbs and
clean them (see details below). And it is quite tricky to
clean them correctly. AND JUST DUNKING IT ISN'T CLEANING
IT!!! If you don't have a service manual, the tools and
skill to do it yourself then bring your bike to the
dealer. You'll just have to hope that they have the
expertise to do it correctly.
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Electrical problems related to stator or
regulator/rectifier failure.
Where erratic spark, a dead electrical system, failure to
start are some of the symptoms.
Failed stator or regulator/rectifiers are the number one
electrical problem for GS's. This is due to a flawed
designed in the regulator/rectifier combined with corroded
electrical ground wires. Typically when the
regulator/rectifier blows, it takes out other parts of the
electrical system such as the ignitor module ($$$). The
first thing to do when encountering any electrical problems is
to perform our stator test located at http://www.thegsresources.com/stator.check.html.
We also recommend changing the regulator/rectifier from the
Suzuki unit to an Electrex. Cleaning all the electrical
grounds is a good thing to do also.
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Improper maintenance.
Improper maintenance causes a lot of problems also. If
you are going to do any amount of serious work on your bike, it
really is a requirement that you have a service manual for it.
This will explain the specifics on how to do a specific job,
give you torque values and sequences, and outline any special
tools or skills that you may need to get the job done.
Remember, while we are quite willing to help you with your
strange bike problems through the various sections at the GS
Resources web site, we are not a substitute for a service
manual. Those types of questions will not be answered.
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Age.
Let's face it, these bikes are 20 years old or more.
If they've been sitting around for 5 years unused, been sitting
in the sun for all 20 years outside or just have survived that
long, chances are that anything made of rubber will need to be
replaced. This includes brake lines, carburetor intake
boots and tires. Go over all rubber parts and if they are
hard and/or cracked. If so, then replace them.
The Most Common GS Questions
QUESTION: Why doesn't anyone answer my
questions?
ANSWER: Speaking from the experience of
running the Q&A section for a couple of years, here are what I
consider the main reasons for questions not being answered.
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It's a complex answer that can be found in the
service manual
Unless someone is feeling really generous, no one is going to
answer questions like how do you disassemble, clean and
reassemble the transmission on a GSxxx. As we have said
a thousand times before - Buy a Manual!!!..
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A weird or unsafe question
Asking a question to see if a 1100 engine will fit in your 550
frame probably won't get a reply.
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Too many questions in one entry
Asking 50 questions in one Q&A entry probably won't get
ANY of your questions answered. Create new Q&A
entries when asking questions on different topics.
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The question is too generic
The question "I turned the key and my bike won't
start. What's wrong?" probably won't get a
reply. If you do, it may not be one that you find very
helpful. ;-)
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The question is incomplete or too short
Fill in all the fields in the Q&A entry form.
Leaving out the model year won't get your question
answered. Be sure to provide enough information so that
someone can understand what the problem is.
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The question is too long
People hate reading a book when the problem can be summarized
in two or three sentences. Keep your entry short, but
not too short. (See above)
Remember, Q&A questions
are now submitted through our forum.
QUESTION: I need a manual. Where can I
get one?
ANSWER: Check out our Links
page and For Sale forum. There are also some other
sources listed throughout the articles in the Old
Q&A - General section. You might also try doing a
search on the Web. Look in the back of motorcycle magazines for
parts dealers and junk yards. Finally, check out your
local Suzuki dealer for Clymer or Haynes manuals.
QUESTION: I need parts. Where can I get
some?
ANSWER: On a similar topic, the Q&A
section is for answering questions of a technical nature. If
you are looking for information on purchasing parts, manuals or
whatever, then check out the Links
page and For Sale forum. Again try doing a web search
or looking in the back of current motorcycle magazines. Those
types of questions are not answered in the old Q&A sections or
Q&A forum.
QUESTION: Why isn't there any information on
my GS XXXX on the site? Do you hate my bike?
ANSWER: No, we don't hate your
bike. The information contained on this site is built from
information coming from the experiences of both the editors and from
our readers. That said, most people tend to own the 500cc
bikes and up. Because of that fact, and that fact alone, most
of the information we have and get from readers, is based on the
more popular Suzuki models. That means that most of what you
see on this site will be on these more popular models.
All we can say is that you probably aren't the only
person out there with that particular model. They are probably
other people asking the same questions as you are. So, if you
have information worthwhile that you can offer, be sure to sent it
to us and we'll include in on the site.
QUESTION: Why aren't wiring diagrams and
assembly photos copied from the service manuals and posted on the
the GS Resources?
ANSWER: Being that the GS Resources is
a multi-continent web site and the fact that we don't like paying
lawyers, we don't copy pages from Service Manuals due to
International Copyright Laws. The wiring diagrams are included
with all Suzuki, Clymer or Hayes service manuals. You'll need
to buy one or find someone else who is willing to break the law.
QUESTION: Where is the specifications and
service data information for my bike?
ANSWER: We currently are asking our
readers to send us the service data and specs for any Suzuki GS's
that you own. (It IS legal to copy this information from
service manuals.) This is so that we can place this valuable
information on our site for others to use.
QUESTION: How much is my bike worth? OR
I'm buying the bike and they want $xxx for it. Is that
too much?
ANSWER: Sorry if it sounds like a
blow-off but we don't know. We don't sell these bikes, we work
on them. In most cases, the ages of the bikes (mid-70's to
mid-80's) makes it where the bikes are no longer listed in the
"Blue Books". This means that the price is set based
on your location, bike rarity, condition and what similar bike
prices are. You may want to ask a local Suzuki dealer instead.
QUESTION: How can I make my bike go faster?
ANSWER: Common improvements involve
removing the stock air box and replacing it with K&N air filter
pods. Going hand-in-hand with that is changing the exhaust to
a 4 into 1 unit. Remember, with any change to carburetion
(pipes and/or filters) you will probably have to rejet the
carbs. If doing the rejet yourself get a DynaJet Kit,
otherwise let your dealer or local race shop do it for you.
Safety and rideability can be improved by replacing
the brakes lines with steel braided line, replacing the front fork
spring with those made by Progressive, replacing the rear shocks
with units like Koni's, changing the handbags and seat, installing
an electronic ignition if your bike doesn't have one, replacing the
stock coils with Dyna units, and replacing the tires with sticky
ones from Dunlop etc...
Anything beyond this will require extensive machine
tooling and knowledge. For this you should hunt down a race
shop in your local area. Some of the companies listed on our Links
page can also help is this arena.
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QUESTION:
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My bike has been sitting for XXX
(month/years/decades) and now it doesn't want to idle.
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My bike has been sitting for XXX
(month/years/decades) and now it craps out at high RPM's.
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OR |
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My bike has been sitting for XXX
(month/years/decades) and now it flood out.
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My bike has been sitting for XXX
(month/years/decades) and won't run without the choke being
on.
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ANSWER: Storing a bike for any amount
of time will cause the gas in the carburetors to gum up and block
all the passages up. In fact, I've seen carbs get gummed up
after sitting for only 3 weeks of sitting!
The only way to clean this is to remove the carbs
from the bike, disassemble them and clean them. Now, just a
simple swipe with a toothbrush won't do it in most
cases. They need to be stripped down to nothing and
soaked in lacquer thinner. BE SURE TO NOT SOAK ANY RUBBER OR
PLASTIC PARTS IN THIS SOLUTION! You will also need air to blow
out the passages when you're done (and not at 300 PSI), meaning that
you'll need an air compressor.
While you're at it, remove the petcock and make sure
the screen to the petcock isn't all jammed up with rust. That
will definitely stop gas from flowing also. With an old bike
it is a great idea to put a $2 inline gas filter in your fuel
line. An old tank will have rust in it and it doesn't take
much to foul up these carbs. Microscopic particles are enough
to screw up the jets.
Finally, check the carb intake boots for
leaks. Rubber doesn't last forever you know. If the
boots are hard and stiff then replace them. Squirt them with
WD-40 with the engine running. If the engine RPM changes, you
have a leak. Leaks here cause backfiring and other performance
problems, i.e. loss of power.
As usual, if you feel uncomfortable doing any of
this yourself, DON'T! Parts are hard to find and are
pretty expensive for our classic rides. Needless to say,
if you do plan on doing it yourself, you should have a service
manual!
QUESTION: I cleaned the carbs and the bike
still won't idle?
ANSWER: The low idle circuits in the Suzuki
carburetors are small and very prone to blocking up due to leaving
gas in the carbs. I've heard of carbs blocking up after less
than 3 weeks of storage. If after you've cleaned them the bike
isn't idling, the carbs are still dirty.
You'll then need to completely dismantle the
carbs. See our carb cleaning
series for information on how to do this correctly. |