When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a 1988 F-250 with a 7.3 idi naturally aspirated. I'm owner number 6 and the previous 5 screwed this thing up. There are a lot of lines in general that got cut. The vacuum system is just dry rotted and old. Its got some vacuum issues, but it still runs and drives. I started to pull lines, and me being an idiot, didn't take pictures or a video
I was wondering if anyone had a vacuum diagram for a naturally aspirated 7.3.
there are really only two things that need vacuum. the brake power booster, and the ac/heat controls.
well, three if you have a C-6 trans. the trans modulator needs vacuum to shift.
it really don't make a difference where what line off what port on the tree goes.. as long as you have a small line to the heat/ac controls, a large line to the booster, and a small line to the VRV if it has a C-6 all will be good.
The factory vacuum tubes on these were not particularly elegant anyway, don't stress over it. Just work some rubber line from each component back to the tree. If your truck has cruise control, that will need it too. The reservoir goes between the tree and the servo.
Dunno if this is helpful or not, but here's the info from my 1992, First Printing, service manual- which covers the early '92 V-belt system, which AFAIK is the same or extremely similar to an '88.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
