88 b2200 struggling under load
 

I recently purchased and 88 Mazda withwith a 2. 2 L in it. When I first got the pickup I noticed it would start chugging under any kind of load at all whether that be pulling a hill or anything past half throttle I took it to a friend of mine who has replaced some vacuum lines and fixed a giant vacuum leak Andre timed it. Adjusted the carburetor and it idles a lot better now and seems to run a lot better. And for the most part took away the chuggin. I took it on a small road trip on the highway today and and still it is doing it. I've checked for vacuum leaks over and over again and I can't seem to find any more. Any suggestions on where to start? Like I said it starts chugging about half throttle but once the RPMs go up pretty high to the point where it's time to shift if you put your foot in it it stops chugging. It does it really bad at lower RPMs in any in a gear.

I use my dads b2200 to move my dirt bike around locally. It's so small which makes it so easy to move my 230lb bike around. But for long trips i take our ram for Nox Vidmate VLC comfortability.

Hello, I have a bit the same symptoms with my Mazda 626 GF Europe of March 1999 but manual gearbox.
... How did you solve your problem after so many years (2017...)? Thank you very much in advance. Your graphs have already helped me a lot...

Sorry, I got the wrong recipient... you must not understand my question!