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Post by crazedfox on Feb 23, 2014 17:55:08 GMT -6
Would be nice to have some $$ to get a fuel-injection kit, & install it.
No more temperamental, messy, & sanity-pushing carb work/tuning.
Just some sanity-pushing tuning via' laptop.
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Post by alleyoop on Feb 23, 2014 18:00:57 GMT -6
This is a stock motor it is flooding with the #35 Pilot jet when coming down to idle from higher rpms. Put the pilot jet it had in there which would be a #30 or #32.
Alleyoop
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Post by crazedfox on Feb 24, 2014 8:23:32 GMT -6
It actually idles better with the #35 pilot.
The original pilot jet was a #34.
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The problem I'm asking about, is there a
possiblilty that the accelerator diaphram is damaged?
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Post by crazedfox on Feb 25, 2014 19:22:47 GMT -6
If it isn't the accelerator diaphragm.
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Could it be a bad intake gasket?
I did remove the intake manifold once, for inspection reasons.
_
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Post by alleyoop on Feb 25, 2014 19:43:17 GMT -6
All I can tell you is a 18mm carb comes with a #30 or #32 if it was a used scoot you bought someone put in a #34 in that carb or you did. And it is being flooded in the low end what is can I tell you.
Why people put in a lot bigger jets on a stock motor is beyond me. A motor can only take in so much fuel and air.
Here is the rule of thumb if you put on a free flow filter and a free flow exhaust you ONLY CHANGE the main jet by 4 or 5 sizes greater than the main jet that is in there. For example if the current Main Jet is say 72 on a 50cc and you add a free flow filter you put in a #74 Main Jet if you add a free flow exhaust you again bump the main jet up to the NEXT bigger jet than what you put in for the free flow filter. The PILOT JET you do not touch unless you put in a BIG BORE KIT that ups the Displacement.
Alleyoop
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Post by crazedfox on Feb 26, 2014 0:11:06 GMT -6
This scooter is a 2013 Peace-Sports Renegade "AKA:805 model".
Purchased new, 3-km on the odometer
Idled perfect, but burned little rich when riding down the road. (drove full-throttle most times.)
The choke died on it rather quick.
Replaced fuel lines. & that's when the flooding started, which lead me to a new carb.
When I took the carb that it came with apart,
it had #34-pilot & a K78-main.
I hope this will help in figuring out what to do.
Because I'm feeling really lost, dumb, & frustrated here...
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Post by alleyoop on Feb 26, 2014 13:34:17 GMT -6
What do you mean the CHOKE died on it quick? Have you checked the ENRICHER maybe that is what is causing it to run rich. If the ENRICHER is not shutting off the extra fuel it is getting to much fuel.
Is the ENRICHER PLUGGED IN? Or did you unplug it?
Alleyoop
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Post by crazedfox on Feb 26, 2014 23:38:03 GMT -6
My apologies.
The enricher on the original stock carb stopped working,
allowing the original stock carb to run rich all the time.
When I tested it with 12vdc 7amps, it didn't warm up barely at all,
& didn't really move the needle, even after 10 minutes.
I know the it's supposed to move at least a 1/4 inch when warmed up.
So I removed it & sealed off the enricher port.
It ran fine for about 2 days, then began to flood the carb to
the point of draining out the intake into the air filter cavity.
From what I learned, float/fuel needle just wouldn't seat correctly.
The float itself was airtight & fine, no leaks.
I suspect my stator may have had something to do with frying the enricher.
The surging spikes from it had blown two headlight bulbs.
P.S.
My scooter's running an AC-ignition system,
headlight comes on when running.
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Hey Alleyoop;
thanks for putting up with me so far.
I appreciate the free help.
I've recently read your post;
"4-cycle carb tuning"
& will be retuning the new carb from scratch when the weather warms up again.
_
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Post by alleyoop on Feb 26, 2014 23:53:26 GMT -6
Wait just a minute, you just said you put on a new carb which come with a new ENRICHER. Did you get a new carb or not?
Tell you what take a picture of the carb on the scoot, I want to see what it looks like. If you did not buy a new carb say so.
If you still have the old carb on how did you plug up the ENRICHER? take a picture that could be your whole problem.
Alleyoop
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Post by crazedfox on Feb 27, 2014 12:54:14 GMT -6
Sorry, you asked about the original problem. So I told you about it. Let's forget about the old carb, & its past issues & focus on the current one at hand. Starting over.--- Current issue now - Tuning new carb. It currently has installed a, #35-pilot jet, K78-main jet.I have #34-pilot & a #75-main jets in my possession that I can use.-------------------------------------- I will be re-tuning the carb from scratch, starting with the #34-pilot & the # 75-main.(As soon as warmer weather permits.) I will be using your post: "Tuning a 4-Cycle Carb" As my instructions. I hope this clears the confusion. Thanks for the help so far... _ -------------------------------------------- New carb is exactly as the old one - ↓↓↓↓↓↓  |
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Post by alleyoop on Feb 27, 2014 14:25:52 GMT -6
OH, OK, yea I was confused. Good yea try the the #34 and the #75 that should be more than enough, but even the #34 may be to big but you will know if it stumbles starting off and you cannot LEAN it out enough to take the stumble/Bog out. If so you then will need to get the #32 Pilot Jet.
Alleyoop
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Post by crazedfox on Feb 27, 2014 15:24:21 GMT -6
Whew,
good that we got things cleared up.
Okay, gonna go do that when weather is warmer.
(It sucks when ya' can't get the rubber parts off due to cold temps. ugh.)
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Post by alleyoop on Feb 27, 2014 15:47:14 GMT -6
Yea around here the wind chill is in the MINUS side(BRRRRRR). Not good to be out in this cold and get frost byte touching cold metal parts.
Alleyoop
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Post by crazedfox on Mar 1, 2014 20:41:06 GMT -6
Well, warm weather came in.
Ok put in the #34-pilot & the #75-Main.
Started out Air/Fuel screw @ 1 turn out.
Ended with 1-1/2 turns out.
Also ended up with setting my accelerator
Diaphram needle clip waay up.
(Less fuel on acceleration.)
Carb still stalling after coming down
from higher throttle pull.
Guess I'm gonna need to find a smaller Pilot-jet.
Or a different carb…
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Is it possible that some carbs
HAVE to run smaller jets?
When others RUN what seems to be a norm of
#35 pilot & a #75 main.
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My OLD CARB ran A #35 pilot & a #78 main.
I know they run'em rich, but really?
This too weird…
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Post by alleyoop on Mar 1, 2014 22:14:31 GMT -6
What is the motor doing when you let go of the throttle? If it is adjusted right when you give the throttle a quick twist and let go the rpms should climb quickly and drop quicky. Are the RMPs coming down hanging and slowly dropping and keep dropping and when it gets to idle the rpms drop and it dies?
If you could get a short Video start it up let it warm up then take a video of a quick twist of the throttle and let go and need to hear the motor of what it does. As you can see I am a MOTOR HEAD(HAHA), I know what a motor needs just by what they do and the sounds they make.
Alleyoop
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..BAD TO THE BONE..