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Post by crazedfox on Mar 1, 2014 23:07:40 GMT -6
Pull 1/3 throddle, & hold.
Then let go.
Engine RPMs come down then dies.
(Unless I bump throddle at last moment, it will die.)
I've got the stupid stumble on throddle snap to go away.
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But now when I go for a ride it's lacking any power.
Didn't even get over 25mph…
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Maybe I should try a different carb?
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Post by crazedfox on Mar 1, 2014 23:12:40 GMT -6
Are the RMPs coming down hanging and slowly dropping and keep dropping and when it gets to idle the rpms drop and it dies?
______________
Yes.
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Post by crazedfox on Mar 1, 2014 23:19:13 GMT -6
I just remembered something.
My OLD-CARB is a 19mm.
My NEW-CARB is a 18mm.
Will this any affect on tuning?
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Post by alleyoop on Mar 1, 2014 23:58:10 GMT -6
Are the RMPs coming down hanging and slowly dropping and keep dropping and when it gets to idle the rpms drop and it dies? ______________ Yes. Turn the Fuel Ratio Screw Clockwise and count he number of turns until it stops DOES the motor keep running or does it die. Alleyoop |
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Post by crazedfox on Mar 2, 2014 3:14:18 GMT -6
1-1/2 turns.
Dies shortly after.
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Post by alleyoop on Mar 2, 2014 13:22:49 GMT -6
If the rpms do not drop quickly to the idle speed but hang and drop slowly it is LEAN —Turn the Fuel Mixture Screw Counter Clockwise ¼ turn at a time. Give the throttle a quick twist let go and check that the rpms drop quickly and not hang and drop slowly.
Alleyoop
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Post by crazedfox on Mar 2, 2014 20:36:02 GMT -6
I miss working on bigger power plants.
Much easier to tune than
their 3 cu. inch counter-parts.
( That, & I got the tools for it.)
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I try again, as per' useal.
When weather lets me…
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Post by alleyoop on Mar 2, 2014 20:41:48 GMT -6
Yea from where it is currently set:
1. Turn it 1/4 counter clockwise THEN test it. Grab the Throtle give it a quick FULL TWIST and let go.
a. If the RPMS do not drop quickly they hang and drop slowly REPEAT #1.
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Post by crazedfox on Mar 2, 2014 23:37:03 GMT -6
Followed the directions from Tuning "4-Cycle Carbs",
going CCW, didn't seem to help.
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But I'll take another try again during warm weather.
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Post by alleyoop on Mar 3, 2014 0:50:09 GMT -6
Have you adjusted the valves? If you have a tight exhaust valve the motor will not hold low rpms because of loss of compression.
Alleyoop
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Post by crazedfox on Mar 3, 2014 15:43:40 GMT -6
I've been thinking about that & few other things too.
Gonna have to remember to do that,
& thoroughly clean the carb too.
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Post by crazedfox on Mar 7, 2014 18:31:32 GMT -6
Well spent a good resonable day going over my acquired "parts" carbs.
Piecing together what I got.
Instead of tuning, like I should.
But there's hope for tomorrow,
lol…
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Post by crazedfox on Mar 7, 2014 20:29:43 GMT -6
Well stuck @ gas station, with carb puking again…
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It's got to be the larger fuel line,
it's must be what's making me nuts.
Ugh.
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Managed to get home, but had to push the scoot + groceries up two small hills about mile home.
At moments like that, I really dislike carburetors.
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Got a upper leg-muscle that feels as if tore something.
Even after some serious pain-killers
& 2 Quarts of Green + Chamomile tea.
( My home brew mix, great
muscle relaxant, & healing aid.)
It's still a bit sore.
This is not what wanted to be doing with my scoot…
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Post by crazedfox on Mar 8, 2014 16:09:49 GMT -6
While sitting at the fuel station trying to get the scoot behave last night.
Someone mentioned the float needle possibly being stuck.
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Could most of my problems be due to a stuck F-needle from a
larger fuel line & untreated gas?
( Seafoam, STP, MysteryOil. whatever.)
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Post by crazedfox on Mar 10, 2014 23:24:22 GMT -6
No reply to this query?
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..BAD TO THE BONE..