Well yesterday I finally solved the mystery.
I said to myself, if this don't run by tonight, I'm selling it. Tired of messing with it.
My regulator arrived. But first I checked current fuel pressure.
3 psi.
For giggles, I put the regulator on ANYWAYS, and set it to 3 psi.
Flooded.
Turned it down to .5 psi, flooded.
TF?!??!?!?!?!??!?!?!?!?
Lol. We'll get there.
I started thinking and thinking and thinking. And did some MORE thinking.
It's aspirating the gas.
Just not like it should.
When you roll it over, the carb horn is dry, but when the motor stops, raw gas comes out the carb.
It's unable to successfully pull it thru to the combustion chamber, unless you drastically limit the fuel input.
It CAN run on crank case gasses (like when it leaks them past the reed), which means it's pulling them thru to the piston on compression alone.
The 2 cycles are being completed as long as gas is in the crank case solely.
So it's..... not passing thru the Reed like it should. That's what I thought.
So I pulled the carb off again, and intake, and low and behold I found an issue. Wasn't the solution, but an issue nonetheless.
I spy with my little eye, an air leak!
notice the debris that attempted to enter the crank case via a leak at the intake.
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So I cleaned those gaskets for now, stoned the piss out of all surfaces to get them nice and clean, assembled, torqued to spec, and tried again.
Flooded!
Dammit!
So I thought OK, it's really going up for sale. F it
Then I decided, momma didn't raise no b!tch, so I'll keep messing with it lol
I got out the vacuum/low fuel psi gauge, removed the screw in the intake , and checked vacuum at the reeds. Low rpms it was like a very bouncy 10.
High rpms it was like 2 in/hg, steadily.
I didnt realize at the time like a dummy, the "boom boom" is what makes the vacuum.
i was confused, thinking like a regular 4 stroke motor, that it needed more vacuum to open the reeds.
lol
so i started playing with throttle positioning....
As in, throttle blades position in relation to when the starter motor began rotating.
I drained all the gas out of the motor, set it so the motor would begin running with the throttle cracked a little, and viola!
It ran. Ran a little lean at the low rpms (like deceleration would cause a popping), so I opened the low speed idle screw a little.
Deleted the regulator.
Tried again. It was a little smoky, but I felt better it was smoking lightly than no smoke. No risk of overheating.
And maybe my mix ratio was a little heavy.
Somewhere around 40:1 or 3oz to 1 gallon is appropriate mixture.
It died in the lawn after after riding around for a bit.
I put more gas in, and it sure enough took right back off!
Now that I FINALLY have a reference point of where it should be, I can fine tune it where I like and have it happy.
As I stated in my first post, this is my first in depth experience of a 2 stroke, I just assumed it needed to be closed off since a "pressurized system" was ideal.
Yes and no.
I needed the air snorkel on while the throttle was cracked, and it would create enough pressure to run stably.
Thats wonderful though.
I'm gonna swap tires and lift with a friend this weekend, and then it can be all tricked out.
Another notable thing I just tried that I'm unsure if it did anything or not is, I pulled the cap off of the oil injection port on the top of the bowl?
That doesn't make sense why it would need to be uncapped, but I'll put it back on mid driving and see if it floods out again .
I understand there has to be air for the venturi affect to work, but I assumed the low speed idle screw and the throttle is all the air it needed ?
We'll see.
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