Name this component?
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Joined: Oct 2014
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Name this component?
truck is a 94 F250, 5.8
This piece was disconnected when we got the truck, upper hose completely missing, lower hose was cut off from whatever it was supposed to be connected to. it was just there, not connected to anything aside from the mounting bracket on the passenger inner fender...
FWIW - the truck starts & runs fine.
what is this thing, and what is it supposed to do?
(and credit/thanks to the person that posted this pic in another thread!)
This piece was disconnected when we got the truck, upper hose completely missing, lower hose was cut off from whatever it was supposed to be connected to. it was just there, not connected to anything aside from the mounting bracket on the passenger inner fender...
FWIW - the truck starts & runs fine.
what is this thing, and what is it supposed to do?
(and credit/thanks to the person that posted this pic in another thread!)
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Ok - so what purpose does it serve? what is it for? is it something I should be trying to reconnect, or what?
Sorry, but my last Ford truck was a 1967 F-250, 352, 2bbl - very basic engine bay - so all this plumbing is new to me.
Sorry, but my last Ford truck was a 1967 F-250, 352, 2bbl - very basic engine bay - so all this plumbing is new to me.
Fleet Owner
Joined: Oct 2005
Posts: 20,789
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From: Kentucky
The air injection system is there to pump air into the catalytic converter during cold starts. The extra air forces the converter to come up to temperature quicker. If you keep your engine tuned up the system is not required IMHO. The FEDs think otherwise.
Many on this forum have removed or purchased vehicles with the air injection system removed, the operation of the truck is not affected if done properly.
Many on this forum have removed or purchased vehicles with the air injection system removed, the operation of the truck is not affected if done properly.
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The air injection system is there to pump air into the catalytic converter during cold starts. The extra air forces the converter to come up to temperature quicker. If you keep your engine tuned up the system is not required IMHO. The FEDs think otherwise.
Many on this forum have removed or purchased vehicles with the air injection system removed, the operation of the truck is not affected if done properly.
Many on this forum have removed or purchased vehicles with the air injection system removed, the operation of the truck is not affected if done properly.
From what we can tell, this truck has not had the best care in its life - air filter was so filthy it was a wonder it could run at all...
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
The F150/Bronco used air injection ports in the back of the heads. Those can be plugged with short threaded bolts ( I do no recall the size). The F250/350 used a more elaborate setup with air injection tubing into each exhaust manifold port. Those can be removed or crimp off the manifold log on each side and weld it shut.
You can remove the vacuum lines to the TAB/TAD solenoids but you have to leave them electrically connected to keep the computer happy. The air injection port on the factory converter also needs to be welded shut.
Pretty easy, but some manage to screw it up...
You can remove the vacuum lines to the TAB/TAD solenoids but you have to leave them electrically connected to keep the computer happy. The air injection port on the factory converter also needs to be welded shut.
Pretty easy, but some manage to screw it up...
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pedant
Joined: Jan 2008
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From: EXTREME southwest CT
You want to cut the threads to 5/8" long maximum.
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and I thank you both, gentlemen! (and all others that have responded)
I will do a bit of poking around (when the weather is a bit more cooperative) to see just what was done to close off the ports on the ol girl. And yes, this ol truck seems to have suffered not only neglect, but abuse as well.
We didnt expect perfection by any means for the price paid, but a bit dismayed at just how badly it was treated.
the next major projects, after verifying this air injection thing, will be trying to bring the brake pedal up, and getting the 4WD shifter operating a bit more smoothly.
I have been reading/searching and have found good threads about both of those items.
I will do a bit of poking around (when the weather is a bit more cooperative) to see just what was done to close off the ports on the ol girl. And yes, this ol truck seems to have suffered not only neglect, but abuse as well.
We didnt expect perfection by any means for the price paid, but a bit dismayed at just how badly it was treated.
the next major projects, after verifying this air injection thing, will be trying to bring the brake pedal up, and getting the 4WD shifter operating a bit more smoothly.
I have been reading/searching and have found good threads about both of those items.
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