Couple quick questions..

[Wvdirtroad]

Trying to identify where these two connections go- the first is is a vacuum line coming off a 4 way (I believe) on the firewall. The hose was disconnected when I bought the truck and it's causing a lack of vacuum pressure in the system. Anyone know where it goes? The second picture is a plug on the drivers side right in front of the battery. I don't see any apparent place for it to plug into, but it comes out of a harness on the radiator support. Lastly- I pulled my injectors today and some of them had a lot of carbon sandy-ish crud on them. Is the normal for regular truck use assuming they haven't been changed in a long time?

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[crash-harris]

Does the truck have hydroboost brakes? If so, that may have been the line to the original vacuum brake booster. Or a hose for the cruise control servo.

 

[OLDBULL8]

What truck do you have?

 

[OLDBULL8]

If the carbon is around the injector lower body below the threads, then the copper washer seal was leaking combustion.

 

[Wvdirtroad]

The nozzle cap and injector body was covered in carbon some still wet with fuel even. I have a 89 F250 IDI regular cab. 4x4. I don't believe there is hydro boost on the truck, but then again I really don't know much about hydroboost.

 

[79jasper]

Find where it comes from. I think he meant if you or someone had installed hydro.

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[Wvdirtroad]

The vacuum line comes off that 4 port valve on the firewall and runs to no where right now. I'm sure I could trail the electrical connector, but it comes out of a harness so I'd have to cut it open for however far to trace it.

 

[79jasper]

It doesn't look familiar to me.
Only thing u can think of in that area is the DRL plug. Module is gone since it's not a Canadian truck.
The vacuum line could be for the low vacuum warning thing. It mounts on the fender liner. 2 wire plug.

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[crash-harris]

Ah, didn't look so close at the background. I now see the vacuum manifold in your picture.

Is it attached to the right side of the manifold (while looking at it), but rotted to the passenger side?

 

[jwalterus]

Vacuum line goes directly to the #2 pencil you snap off in the end of it (assuming everything works right now)

The plug looks like an OBD (first gen) diagnostic port off a gas truck, but if you REALLY want to know....
http://www.fordservicecontent.com/pubs/content/connectors/images/connectorcatalog.pdf
have fun with THAT!

 

[Wvdirtroad]

I've got a bolt stuck in the end of it right now and taped. It goes to the left side upper port looking at it. Anyone have a pic of the low pressure warning switch?

 

[laserjock]

Not a great pic. There's a current thread with one though.

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[Wvdirtroad]

Awesome I'll see if I can find it. One more question... Side of my injectors say cav England..but I don't see any injector codes.. Anyone heard of these?

 

[Clb]

Low vacuum idiot light unit