Carb issues, Zeda 100

[Corp]

Have the zeta 100 performance kit with the reed valve, windowed pistons and 21 Mm OKO carb. Had a ton of issues at the start but it believe they stemmed from intake leaks at the reed valve. Still see a small amount of oil at intake manifold but I feel like I already overtourqed the nuts to being with and they really can't get much tighter. Have been checking head tourqe as well.

Been slowing messing with it to get it to run right. Low and mid ranges has okay power but WOT and mid range throttle from slow speeds bogs the engine. If I easeeeee into the throttle it runs okay but it also does not like going straight to even half throttle at low speeds

The carb has a Powerjet and I notice that the line never has fuel even at WOT. I also can't tell if I'm lean or rich at higher throttle input from sound as I'm pretty inexperienced with 2 strokes. Anyone with powerjet knowledge, chime in. Can't find a lot online about the system. Maybe not enough air flow? I see people using velocity stacks instead of filters, maybe that would help with WOT and the enabling of the powerjet?

I keep checking the plug after short rides and I feel like I'm right in the sweet spot of a/f but I also can't use full throttle and not a ton of half throttle unless up to speed so it may be skewed. At 105 main 39 slow jet. 1 notch down from middle on needle.

Any tips to get a full range of power? The motor also isn't broken in quite yet but I'd like to get it dialed in.

 

[Chainlube]

Have you tried it without the reed block?

 

[Corp]

Have you tried it without the reed block?

the head is modified for the reed valve, it has to use it. Unless im mistaken the two mounting surfaces are different.
Edit, yea it must use it in its current format. The adapter coming off the reed valve is different

 

[Chainlube]

the head is modified for the reed valve, it has to use it. Unless im mistaken the two mounting surfaces are different.
Edit, yea it must use it in its current format. The adapter coming off the reed valve is different

If you remove the 4 screws?

 

[Corp]

If you remove the 4 screws?
View attachment 219794

No, the bolt pattern is different. The reed valve sits against the head. The reed valve bolts are 1.5 inches apart and the elbow bolts are 2 inches apart. Will not bolt up

 

[Corp]

How's this plug look? Still a bit lean?

 

[DAMIEN1307]

View attachment 219814
How's this plug look? Still a bit lean?

Yeah, just a tad...This is what mine usually looks like.

 

[Corp]

Yeah, just a tad...This is what mine usually looks like.

View attachment 219825

That's what I don't get. I'm running a much bigger jet than others used on this motor and on the richest needle setting. Ive already cranked on the intake bolts more than I ever would. Even set a pair of vice grips on the hex key and gave it a crank. It cracked like a head bolt would on a car engine. They are tight! I do see a small amount of oil on the gaskets but my guess is I HAVE to have an intake leak. Gonna test tomorrow with starting fluid.

Thing is I wouldn't know how to rectify that if that were the case as the gaskets are brand new

 

[DAMIEN1307]

That's what I don't get. I'm running a much bigger jet than others used on this motor and on the richest needle setting. Ive already cranked on the intake bolts more than I ever would. Even set a pair of vice grips on the hex key and gave it a crank. It cracked like a head bolt would on a car engine. They are tight! I do see a small amount of oil on the gaskets but my guess is I HAVE to have an intake leak. Gonna test tomorrow with starting fluid.

Thing is I wouldn't know how to rectify that if that were the case as the gaskets are brand new

Possibly using some gasket sealer along with the gaskets will be of help to form a better seal for you, I haven't, as of yet, had to do this on my motors myself, but many others on the forums have done this with their motors when they discover their brand new gaskets are allowing leakage to happen.

 

[Dogsoldier]

Because they’re new doesn’t mean they’re good!