Smog question for toyota '79 truck valve assy air switch
#1
Smog question for toyota '79 truck valve assy air switch
I'm trying to figure out how these connect for smog check.
I circled the pipes to where they should connect.
Three options for red, yellow, and white:
1. air/smog pump
2. air intake assy
3. some pipe coming from behind the engine
part#: 25710-38030
I circled the pipes to where they should connect.
Three options for red, yellow, and white:
1. air/smog pump
2. air intake assy
3. some pipe coming from behind the engine
part#: 25710-38030
#2
this is thread on desmogging but i think i remember seeing something about those hose connections in it
https://www.yotatech.com/forums/f114...torial-264405/
https://www.yotatech.com/forums/f114...torial-264405/
#3
Registered User
I just removed mine which looked very similar on my 78. If I remember correctly I believe it was:
Red- Smog Pump
Yellow- Air Filter
White- Exhaust manifold (tube behind engine)
Red- Smog Pump
Yellow- Air Filter
White- Exhaust manifold (tube behind engine)
#4
thanks, im trying to smog, do you think i still need the vacuum piping assembly in order for this part to work?
#7
Registered User
Not particularly, I'd imagine most of the parts are crazy expensive from the dealer. I'd keep a close eye on the junkyards, maybe find a truck when it first comes in the junkyard and grab all the parts you need
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