How pickey is an SA50 S motor? Will it run without? UPDATE

rpm9001 · Post by **rpm9001** » Fri Apr 25, 2008 7:56 pm

I just bought a 95 sa50 s elite and the foam was clogged and dry rottted so I tossed it. I ordered one but have not recieved it yet. The scooter will start easy but will not take any throttle... Will not having the foam and air cleaner cover off effect the throttle that much? Figured I would ask before digging any deeper. As soon as I touch the throttle it dies, but restarts very easy.

Kenny_McCormic · Post by **Kenny_McCormic** » Fri Apr 25, 2008 8:45 pm

Your running lean and destroying the motor, make your own conclusion.

rpm9001 · Post by **rpm9001** » Fri Apr 25, 2008 9:14 pm

I guess I better make it a bit more clear... I'm not riding it, It is on my lift and starting it for the first time. I'm just wondering if not having the foam and cover on it is causing it to take zero throttle. I do not have a filter for it, To risky to use the old one. I ordered a new filter, but it will take a week to get. I'm just in the "inspection stage" I'm just trying to figure if this is why I cant give it any gas, or if I have another problem.

I work on street and drag bikes 1300 +cc up to 480 hp

I'm just lost knowing how these little react to small changes

hondaman · Post by **hondaman** » Fri Apr 25, 2008 9:22 pm

The answer is Yes. That filter makes all the difference. I would not restart it until that filter is in place. Take the advice for what its worth. You will not be able to adjust the carb correctly until that filter is on.

rpm9001 · Post by **rpm9001** » Fri Apr 25, 2008 9:53 pm

Thanks,

I understand I can not tune it with out the filter, I just needed to know if it would cause it to not take any throttle. I'm going to wait till I get the filter, I had to order it.

I just did not know if that was causing the problem, But sounds like it is.

Thanks!

Kenny_McCormic · Post by **Kenny_McCormic** » Sat Apr 26, 2008 10:49 am

Yes lack of filter is your problem and running more than a few seconds can and WILL reduce the motors lifespan.

rpm9001 · Post by **rpm9001** » Sat Apr 26, 2008 1:50 pm

Thanks,

Will not start again till installed! Thanks

rpm9001 · Post by **rpm9001** » Sun Apr 27, 2008 8:58 am

Ok I have a new filter in it, air box back together, Scooter run's at a tap of the key, and will idle smooth and quiet. Still still not take ANY throttle. As soon as you touch it it will die.

Before I take the carb apart, Is there anything common on the scooters That will cause this problem? The gas is fresh and 1 oz of seafoam. I have started it and let it run a few times yesterday to make sure the fresh gas and cleaner gets in the carb.

Plug looks to be in good condition, Dark but clean But going to pick a new one up today.

I also did a compression test, motor warm and throttle wide open. 120 lbs
I believe it is on the lower but should be fine for it to run good.

My next step is to clean the carb, but would like to test other possible problems first.

Any suggestions?

Thnaks

Kenny_McCormic · Post by **Kenny_McCormic** » Sun Apr 27, 2008 9:33 am

These tiny carbs clog up easy, clean the s*** out of it twice and try again.

rpm9001 · Post by **rpm9001** » Sun Apr 27, 2008 9:42 am

I guess I will give it a shot. Is there a certain circuit that normally clogs worse? I will mess with it later today.

Thanks,
Geo

Kenny_McCormic · Post by **Kenny_McCormic** » Sun Apr 27, 2008 10:39 am

Nor really, just pull it off,
take out the 3 adjustment screws dont forget which one goes where)
drop the bowl,
remove the float and needle
and unscrew the main jet,
its fully disassembled at this point, spray carb clean in every hole you can find, wait a minute, and blow it out with compressed air, do this till you run out of carb clean.

rpm9001 · Post by **rpm9001** » Sun Apr 27, 2008 11:03 am

Thanks,

I have a ultra sonic carb cleaning tank that works like a charm. I will post How I make out.

George

rpm9001 · Post by **rpm9001** » Sun Apr 27, 2008 12:43 pm

update Before taking the carb apart I tried to test the auto bystarter. I get no power to the connection from the harness to bystarter running or not. Should I get power there? When I plugged it back in and started it it, idled a little high for a minute during that time the throttle response was crisp! then it idled down it again would not take any throttle.

Any thoughts.

Kenny_McCormic · Post by **Kenny_McCormic** » Sun Apr 27, 2008 1:29 pm

When the engine runs there should be power at the bystarter. Time to start tracing wires. Clean the carb anyways.

rpm9001 · Post by **rpm9001** » Sun Apr 27, 2008 2:04 pm

It has power, resistance at the by starter was 4 pulled it out, needle looked good, moved easy. Started it with the hole covered and let it run and the plunger/needle expanded out By starter seems to be ok. Put it back together after it cooled down and restarted it, Idle a little high and slowly droped to normal idle after 30 second or so, Once the idle dropped Give it gas and it still will stall. Now when I first start it, throttle is crisp. Seems like the bystarter gets warmed up and the needle drops in the seat is when I have the problem.