Help identify these parts

[MugshotXL5]

Good morning guys, im in the process of trying to learn what the parts in the engine do, particularly this GLi Lancer 94 converted to carb. Gusto ko sana ma-ID kung anong specific Mikuni carb model ito, wala kasi madownload na manual. Gusto ko sana ayusin yung mga vacuum lines kasi i suspect a major vacuum leak.

https://i.imgur.com/1X2HqMv.jpg

It's stamped Mikuni, made in japan. Nothing else.

Also, is this (right side) the EGR valve? https://i.imgur.com/7t4vr44.jpg

It is teed into the left actuator(?) and are both connected to this brown thing with some type of filter https://i.imgur.com/J4dh8dK.jpg connected to the water outlet(?) area. The other end of the connection is still unclear if it connects to manifold or ported vacuum port on the carb, or silang tatlo lang talaga ang connected sa isa't isa?

[mina_nuka]

Good morning guys, im in the process of trying to learn what the parts in the engine do, particularly this GLi Lancer 94 converted to carb. Gusto ko sana ma-ID kung anong specific Mikuni carb model ito, wala kasi madownload na manual. Gusto ko sana ayusin yung mga vacuum lines kasi i suspect a major vacuum leak.

https://i.imgur.com/1X2HqMv.jpg

It's stamped Mikuni, made in japan. Nothing else.

Also, is this (right side) the EGR valve? https://i.imgur.com/7t4vr44.jpg

It is teed into the left actuator(?) and are both connected to this brown thing with some type of filter https://i.imgur.com/J4dh8dK.jpg connected to the water outlet(?) area. The other end of the connection is still unclear if it connects to manifold or ported vacuum port on the carb, or silang tatlo lang talaga ang connected sa isa't isa?

There should be an aluminum tab on the side of thedthe carburetor about 14x30mm identifying the carburetor model.
The plastic component with one vacuum hose attached to the intake manifold is a thermostatic vacuum switching valve.

[MugshotXL5]

There should be an aluminum tab on the side of thedthe carburetor about 14x30mm identifying the carburetor model.

couldnt find any, might poke around and under for a bit. tingin ko meron eh. sana andun lang somewhere.

The plastic component with one vacuum hose attached to the intake manifold is a thermostatic vacuum switching valve.

ay yun thanks. isa lang ang port nya, unlike the other VSV beside it which has two.

i took this off https://i.imgur.com/7t4vr44.jpg and it is the EGR, while the other is a vacuum modulator and has two ports: top port can draw unmetered/fresh air thru a felt filter and connects to the EGR's top port (and both top ports connect to the thermal switching valve). are they supposed to connect to manifold or are they supposed to be a closed system na silang tatlo lang (EGR/TVSV/vacuum modulator)?

their bottom ports connect each other.

[MugshotXL5]

couldnt find any, might poke around and under for a bit. tingin ko meron eh. sana andun lang somewhere.



ay yun thanks. isa lang ang port nya, unlike the other VSV beside it which has two.

i took this off https://i.imgur.com/7t4vr44.jpg and it is the EGR, while the other is a vacuum modulator and has two ports: top port can draw unmetered/fresh air thru a felt filter and connects to the EGR's top port (and both top ports connect to the thermal switching valve). are they supposed to connect to manifold or are they supposed to be a closed system na silang tatlo lang (EGR/TVSV/vacuum modulator)?

their bottom ports connect each other.

to elaborate, the EGR has a pressure outlet in the bottom part which feeds the modulator. the modulator on the other hand has only one nipple on top and a filtered air bleed which closes when pressure from the EGR exhaust pushes the diaphragm of the modulator.

the brown TVSV meanwhile has only one nipple also, and air can pass thru its filtered top vent when cold (havent tested blowing thru it when engine is hot though). i have a rough sketch of how the 3 parts originally were when i got the vehicle.

https://i.imgur.com/WnaD8I2.jpg

with how these three were setup, i fail to see how the the EGR will open up, and im thinking tee'ing them off to ported manifold will cause a vacuum leak during cold engine operation because of the air-vented TVSV, or during idle because of the air-vented modulator when there is no pressure from the EGR valve.

to prevent a bad case of leaks, can i just tie the vented TVSV and modulator together, and rout the EGR valve directly to ported vacuum? i understand that this way, the EGR will only work off idle (acceleration/cruising/decel) and never on idle and WOT. tama ga?