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Old 04-19-2013, 02:41 PM   #1
clicheche OP
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Location: Calgary, Alberta, Canada
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1976 suzuki ds100

i have spark, and fuel is getting to it.

i cleaned the carb. are there any settings or adjustments to the carb that could not allow the sucker to fire up?

air flow is good as well.

kill switch is in the 'run' position.
there is no battery on the bike, but this shouldn't matter right?


any ideas?

update: plug was soaking wet. will this definitely halt it from firing up?
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clicheche screwed with this post 05-14-2013 at 08:12 PM Reason: year of bike needs to be corrected! its a '78
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Old 04-19-2013, 06:18 PM   #2
Andyinhilo
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Quote:
Originally Posted by clicheche View Post
i have spark, and fuel is getting to it.

i cleaned the carb. are there any settings or adjustments to the carb that could not allow the sucker to fire up?

air flow is good as well.

kill switch is in the 'run' position.
there is no battery on the bike, but this shouldn't matter right?


any ideas?

update: plug was soaking wet. will this definitely halt it from firing up?
Wet plug will definitely keep it from starting. You need to find out why it is wet, too. Did you flood it, is the float needle working, etc.?
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Old 04-19-2013, 10:20 PM   #3
clicheche OP
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i believe the float needle is working. it moved when i played with the float upon taking apart and cleaning the carb.

so it never even had a gas tank when i bought it. not sure how many years its been since it was running. the carb was seized. i may have had the choke on and tried kicking it quite a few times before i ultimately tried roll starting it.

it puttered pretty good and almost sounded like it wanted to fire.
could the quality of spark be an issue?
i considered replacing the plug, but i saw spark when testing it, so figured it would be fine.

i'm gonna replace the plug and then try roll starting it tomorrow.
would the ignition coil, (for lack of a better term...maybe that's accurate) need to be replaced? due to lack of quality spark firing?

would taking the air filter off help, or matter?
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Old 04-20-2013, 04:40 AM   #4
FR700
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Clean/replace points.

Fresh plug , B8ES.

.
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Old 04-20-2013, 11:05 AM   #5
2TICKLASSIC
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What color is the spark ?
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Old 04-20-2013, 06:35 PM   #6
Andyinhilo
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NEW PLUG! The float needle may be free, but you need to be sure that it is actually shutting off the fuel. The seat and needle tip could be damaged and/or a a bit of trash could be there as well.
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Old 04-20-2013, 06:51 PM   #7
clicheche OP
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the new plug b8es sucks.

tiny little spark.

the old plug sparks better.

that being said, the spark color, (though much smaller) was more blue on the new plug, and orange on the old plug.

will consider the points suggestion.

is compression difficult to test?

could that be an issue?

will check the carb again as well. how to tell if the float needle would be stopping the gas flow?
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Old 04-20-2013, 06:52 PM   #8
clicheche OP
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what components of the carb deal with starting? pilot jet? float needle and jet?

anyone know where one can get their hands on a carburetor rebuild kit?
1976 suzuki ds100
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clicheche screwed with this post 04-20-2013 at 09:44 PM
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Old 04-20-2013, 10:01 PM   #9
Andyinhilo
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Quote:
Originally Posted by clicheche View Post
the new plug b8es sucks.

tiny little spark.

the old plug sparks better.

that being said, the spark color, (though much smaller) was more blue on the new plug, and orange on the old plug.

will consider the points suggestion.

is compression difficult to test?

could that be an issue?

will check the carb again as well. how to tell if the float needle would be stopping the gas flow?
Blue spark is better than orange. Compression is easy to test if you have a gauge.

The easiest way to test the needle is to see if you can blow into the fuel inlet after the float bowl is full.

Starting fuel delivery is controlled by all the circuits, dependent on throttle setting. you also need to make sure that the enrichener is shutting off completely.
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Old 05-03-2013, 11:35 AM   #10
psycho klr
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Until you get a service manual for this bike so that you can properly set the float level adjustment, air screw, timing, etc., you are just chasing your tail. You may be able to find the info online but it would be easier to find a manual.
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Old 05-04-2013, 05:59 PM   #11
clicheche OP
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i can't even find a manual! (i rarely use e-bay)

are these settings that fickle for the bike to run?

obviously timing is of concern. i have a feeler guage, just need the points gap settings. (and the parts to arrive) nothing online.

thanks for the advice. i never thought about float height needing to be super exact... in a simple 2 stroke case.

thanks again!
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Old 05-09-2013, 10:17 PM   #12
clicheche OP
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how does one set the timing?

i've had the bike running in the recent past, but as of today the thing won't even turn over. i'm definitely at a loss.
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clicheche screwed with this post 05-09-2013 at 10:27 PM
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Old 05-10-2013, 07:09 AM   #13
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If it really won't turn over it may be flooded and that may be a lot of your problem. Take the plug out and kick it and see if gas gushes out of the head.
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Old 05-10-2013, 05:16 PM   #14
clicheche OP
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no gas comes out of the head at all. i've had the plug in and out so many times to check and see if its even wet. when i kick it, no gas at all.

i can't understand it!

haha.

checked float height. as per the info online i could muster. 5/8 inch -3/4 inch, and that's where it lies. the bowl has fuel, and the plug has spark. i had the sucker running a week or two ago.

i was told the air screw to be turned out 1 and a 1/4
and to unscrew the slide screw quite a ways out. its almost as if, now, the plug isn't getting fuel. all jets are clear.
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