I have a couple of quick vac questions (see pic attached):

88 n/a 13B

1. My boost sensor has a vac hose that just hangs down and goes to nothing. There is a stub of vac hose with a plug on the throttle body where it should go. I cannot find the Vacuum Switch that is also in the diagram. It appears that this was bypassed/eliminated at one time (been this way since I bought it three years ago). question is, do I need this (guessing not since car ran fine... before the fire).

2. After my PD fire, the vac hose that goes to the item in the pic was burned off and hanging from the throttle body. Trying to map out my vac lines for the repair and can't seem to figure out where this line goes (it's the 6mm hose on top of the front of the throttle body). it shows it going to the component pictured, but what is it, and where is it?

 

Number two is the oil metering pump spider. It's located under the dynamic chamber. It has five nipples. Large nipple to the dynamic chamber. The others to the oil injector top nipples.


That vacuum switch is for an automatic transmission car....which you don't have. Right?

The vacuum line for the boost/pressure sensor goes to...a nipple directly above the ACV.

 

aha. spider. Trying to replace everything that's damaged using visual inspection. Hard to do when a part completely disappears! I think my DP fire completely burned up my spider and all the oil injector vac hoses. I saw a thread that talked about using T's/splitters to create a workaround. I see MazdaTrix sells a kit with all 5 hoses and the spider for $40 or so. T's/splitters work OK?

So just to be clear (since I can't seem to find a decent diagram in the FSM), the larger hose runs from the front (top nipple) of the dynamic chamber to the spider, and the other smaller hoses just run to the top of the oil injectors, right?

As for the Vacuum Switch, yes it's a manual transmission. So in this case, the vac hose would run right from the boost sensor to the extension manifold? Seems strange that the hose is disconnected, just hanging there. and that it's plugged on the manifold. Looks like it got pulled off, someone didn't know where the missing hose was, and just plugged it instead of putting it back on.

Thanks in advance.

 

thanks for attaching the pic. Strange the entire thing was gone. I've torn it down and there was no sign of it or the 4 injector hoses. Not even a clump of melted plastic.

Anyway, is that diagram from the FSM? not that it matters anymore, but I swore I browsed through it all. what section?

 

NZCONVERTIBLE gave us a Training Manual for the early cars. It was hosted on this site at one time. Where it's hosted now is ?????????