Pre-Power Stroke Diesel (7.3L IDI & 6.9L)Diesel Topics Only
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I traced the vacuum hoses from my "coffee can" last night. One runs into a muliple port connection on the right side of the truck, and the other runs into what looks like an overgrown EGR valve on the left side of the truck, above the fuel/water separator.
Can somebody explain the advantages to me?
I have a Banks Sidewinder on my 6.9...will removing the coffee can have an adverse effect with this set up?
I never heard of this mod before, but I've been seeing it metioned here in a few threads. Any info is much appreciated!
Ive seen what he is talking about It has vacuum lines attached to it one comes from the main vacuum tree on the firewall the other goes to the cruise control its like a vacuum storage can and it does look just like a large tin can
I've seen the can on my 91 diesel and gasser Fords too. It's a little smaller than a coffee can, but larger than a can of beans... I always assumed it was for vacuum storage during hard acceleration when a gas motor has almost no vacuum.
I recommend strongly against removing the coffee can. It's not a performance upgrade, and I agree with the earlier post that speculated a possible confusion with the "soup bowl".
Removing the "coffee can" will do away with your vacuum reserve. If you use your brakes and then find that you need to stop suddenly again right away (as in pulling out of an intersection and then stopping to avoid an accident), you might find that you have a hard pedal and won't be able to stop your truck as quickly. Having a vacuum reserve is crucial to preventing loss of boost to your brakes.
On a gas engine, you will find the vacuum resevoir(coffee can) hooks to the the vacuum tree through a check valve. The HVAC vacuum line also hooks beyond the check valve with a tee connection to the coffee can. This is so when you pull a long hill in a gas engine, and you start losing vacuum, the check valve closes and the resevoir starts supplying the vacuum to the HVAC to keep the air vents from switching back and forth when the vacuum does go low.
I haven't seen a diesel setup yet, but I would imagine if it has a check valve in the line, and is tee'd into the line going to the HVAC, that it has the same purpose-to stablize the vacuum controls in the HVAC system.
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