small pipe tapped in after first cat?
Thread Starter
|
Senior User
Joined: Oct 2006
Posts: 166
Likes: 0
small pipe tapped in after first cat?
i have an 98 f150 with a 300/6 and when i had it at the shop today i noticed the small pipe from the exhaust (that goes somwhere up into the engine bay) was rusted off. the guy at the muffler shop said just to cut it off and plug hole in the exhaust with something (weld it) and just leave the pipe hanging .
can i do this ?
will it ake a diffrence on anything?
Thanks
can i do this ?
will it ake a diffrence on anything?
Thanks
Elder User
Joined: Aug 2007
Posts: 502
Likes: 0
From: Southern New Hampshire
well if it is what i think it is don't cut it off and plug it. it is the EGR pipe going from the exhaust to the egr valve up on top in the back of the engine. if that is what i think it is, the mechanic is WAY wrong and shouldn't be working on other peoples cars
Posting Guru
Joined: May 2007
Posts: 1,208
Likes: 2
From: North Reading Mass
The pipe might also be the secondary air coming from the AIR pump to the catalytic converter. Its supposed to help the cat burn up excess gas until engine warms up. Not all trucks have this.
regards
rikard
regards
rikard
Senior User
Joined: Mar 2004
Posts: 491
Likes: 0
From: Boyd,TX
It's most likely what Skandocious and rikard said, but it is there to cool the CAT at idle or low speed it is needed though, and your truck will run fine without it.
Trending Topics
Thread Starter
|
Senior User
Joined: Oct 2006
Posts: 166
Likes: 0
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
Originally Posted by TheRoadVirus
Hmm, I wonder where my EGR get's it's gases then, because I've got headers and no tube. Other than the air one as far as I know. You sure?
When your headers where installed a tube could have, should have been welded in to reconnect it.
EGR= Exhaust Gas Recirculation. A process in which a small amount of
exhaust gas is routed into the combustion chamber.
Fleet Mechanic
Joined: Sep 2003
Posts: 1,279
Likes: 0
From: savannah,ga
radial arm
the older trucks with carbs worked that way the newer ones
with F.I. use the setup as descibed
the tube going down to the converter comes from the air pump
not all trucks have the air pump pipe to the converter
some are routed to the back of the heads
on a lot of the older trucks you will find them
routed to the exh. manifold with individual connections
at each cylinder
its easy to look at all these pipes and not be sure
of which one does what
the older trucks with carbs worked that way the newer ones
with F.I. use the setup as descibed
the tube going down to the converter comes from the air pump
not all trucks have the air pump pipe to the converter
some are routed to the back of the heads
on a lot of the older trucks you will find them
routed to the exh. manifold with individual connections
at each cylinder
its easy to look at all these pipes and not be sure
of which one does what