OK, here's a chance to show me how ignorant I am.

I'm working on getting a '90 F250 with a fuel-injected 300 to run. It's been sitting for a couple of years, and my kid fell in love with it. So, now it's in my driveway. Dead fuel pump, dead coil, dead injectors, all replaced, along with the fuel filter, plugs, wires, cap and rotor. Most of the vacuum lines were junk, and had been cut'n'spliced, so I'm gonna put new ones on. Here's the diagram from under the hood (sideways):

http://members.***.net/mcgyver42/Vacuum%20Hoses.jpg

I've got the Haynes and Chilton manuals for this truck, but not the patience to comb through them to figure this thing out. Please help me fill in the blanks or correct the following acronyms:

ACV: ?
CAN: cannister
CAT: (Surely NOT catalytic converter!)
CPVR: ?
EFCA: Electronic Fuel Control Assembly
EGR: Exhaust Gas Recirculation valve
ENG: Engine?
EVR: EGR Vacuum Regulator
FPR: ?
GRL: Grill?
MAN VAC: Manifold Vacuum
MAP: Manifold Absolute Pressure
PCV: Positive Crankcase Ventilation valve
SOLV: Solenoid Valve?
TAB: Throttle Air Bypass
TAD: Thermactor Air Diverter Valve
V CK V: ?
VRESER: ?

Thanks!

-Mark

'85 F250 4WD 460
'85 Yamaha XJ700 Maxim
'83 Mustang convertible on blocks

 

Here we go.....
CAT=catalytic converter
ACV=air control valve
VCKV=vacuum check valve
VRESER=vacuum resevoir
SOLV-solenoid valv
GRL=grill
FPR= fuel pressure regulator
ENG=engine

I sure would like to get a printable copy (reduced size) of that vacuum diagram you posted.

 

I forgot the CPRV. That is the canister purge valve.

 

mantta great job. I found a website a while back that has a definition of any thing you can find in a manual. Bookmark this site cause you'll need it again.
[link:http://selimcetinkaya.tripod.com/sozluk/kisaltmalar.htm|automotive definitions]

 

OK, I got everything hooked up, the best I could puzzle it out. A previous owner had chucked the charcoal cannister, so I had to replace it (must have it to pass emmissions in this state). Only had to make about 3 trips to the store for more vacuum hose!

However, I've still got a problem. The sticker only shows 1 PCV valve, but this engine has two, one forward and one aft. The forward one has only one nipple, and the heavy hose on it goes to a nipple on the lower manifold. However, the aft one has two nipples, a large and a small. If I connect the small one to the EFCA nipple, as shown, then where does the large one go? I figured to a manifold vacuum nipple, but maybe not?

Any clues?

Thanks,

-Mark

'85 F250 4WD 460
'85 Yamaha XJ700 Maxim
'83 Mustang convertible on blocks

 

[updated:LAST EDITED ON 10-Apr-02 AT 08:19 PM (EST)]On my truck, the hole in the front of the valve cover is for the fitting that allows a hose from the air box (which is for the crankcase filter) to be hooked to the valve cover. The PCV valve is mounted at the rear hole, only using the big nipple to which a hose is routed to the large nipple under the intake. The small nipple is not used and has a platic pluggy thing inserted in to it to block off (a vacuum plug would serve the same purpose). This is how everything should be arranged....unrestricted filtered fresh air from the air cleaner enters the front of the valve cover and exits through the PCV valve into the intake.
Phil

 

Phil,

Way cool, thanks. That makes sense. (I assume we're talking about the same engine.)

I'll have to look, but I'm pretty sure there's a PCV valve in both holes in mine; may not be correct. I wonder whether I can get the fitting you're talking about.

I'm confused, though, about:

>the air box (which is for the crankcase filter)

Not sure what you mean. Not the big air box that holds the big air filter for the air that goes into the throttle body, right? Which air box would this be? One that hooks to the air pump?

Thanks,

-Mark

'85 F250 4WD 460
'85 Yamaha XJ700 Maxim
'83 Mustang convertible on blocks

 

It is the engine air filter, it is on the drivers side and has two large hoses hooked to it that go to the throttle body. On the rear side bottom of this box there is a little filter and a hose hooked to the outside that goes to the front hole in the rocker arm cover. There should not be a PCV in this hose. It should be in the hose that goes to the hole in the rear end of the rocker arm cover. The PCV draws fumes out of the engine and the hose going to the air filter box lets air in, if you are lucky enough to not have any blowby in the cylinders. Have fun!!

 

Hey guys I just realized my URL [link:selimcetinkaya.tripod.com/sozluk/kisaltmalar.htm|Automotive Definitions] did not work in my previous post, the correct one is shown above. Why didn’t any one point that out?

 

mantta,

Very clear. Thanks for the patient explanation, and sorry for the slow uptake.

I'll check that. Thanks again!

-Mark

'85 F250 4WD 460
'85 Yamaha XJ700 Maxim
'83 Mustang convertible on blocks

 

Hi, I have a Ford F-350 460 7.5L If anyone knows how to get to a diagram that would show me how to install a Fuel Pressure Regulator. I would greatly appreciate it. Thanks

 

This link doesn't work my friend. But thanks for the try.

 

Just took me to a hook up website where girls are just dying to meet me!
Either someone had hijacked your site, or like myself, the computer has outwitted you. But thanks for trying. That is more than 99% of us do!
I am grateful for the effort.

 

Umm, he posted it over six years ago.

I'm not really surprised.