1999 to 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines
Sponsored by:
Sponsored by:

Exhaust Manifold Leak 5.4 '99 F250 SDuty

Thread Tools
 
Search this Thread
 
  #1  
Old 01-06-2008, 09:28 AM
Tangmus's Avatar
Tangmus
Tangmus is offline
Freshman User
Thread Starter
Join Date: Dec 2007
Posts: 30
Likes: 0
Received 0 Likes on 0 Posts
Exhaust Manifold Leak 5.4 '99 F250 SDuty

Should I attempt to replace the passenger side manifold with what I can get from Napa. I would rather pay 100 bucks for everything and do it myself. But, Im concerned about replacing the studs. From what I have read the studs seam to be the problems for most leaks on these vehicles. I have torque equip. and other tools to do the job. Just want others opinions about this project. How hard really is it?
 
  #2  
Old 01-06-2008, 04:51 PM
tigerman's Avatar
tigerman
tigerman is offline
Senior User
Join Date: Feb 2002
Location: Kansas, USA
Posts: 352
Likes: 0
Received 0 Likes on 0 Posts
This may be a stupid reply, but why can't you just tighten the manifold bolts as is?
 
  #3  
Old 01-06-2008, 05:52 PM
mhoefer's Avatar
mhoefer
mhoefer is offline
Postmaster
Join Date: Jan 2005
Location: BC Canada
Posts: 4,424
Likes: 0
Received 11 Likes on 10 Posts
You need to be able to get the exhaust manifold bolts that break off out of the head. Also, you may need to machine the manifold surface to make it flat again. Its not the cost of h/w its the labour and the right tools. My 2000 had this, ended up doin both sides eventually.
 
  #4  
Old 01-06-2008, 06:14 PM
Tangmus's Avatar
Tangmus
Tangmus is offline
Freshman User
Thread Starter
Join Date: Dec 2007
Posts: 30
Likes: 0
Received 0 Likes on 0 Posts
Hey Mhoefer, how much did you pay to have each side done, did it require drilling out the broken bolt and machining the surface. Has the replacements held up so far, how many miles have you had on them since the replacements. thanks for the replies
 
  #5  
Old 01-07-2008, 08:01 PM
bbender85's Avatar
bbender85
bbender85 is offline
Logistics Pro
Join Date: Jul 2004
Location: Caledonia, MI
Posts: 4,825
Received 42 Likes on 37 Posts
wondering all the same things myself... to the top!
 
  #6  
Old 01-08-2008, 12:55 AM
mtfrdlvr's Avatar
mtfrdlvr
mtfrdlvr is offline
New User
Join Date: Nov 2007
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Just got done replacing all of the passenger side exhaust manifold bolts and gasket, or should I say having them done. I am very mechanically inclined and initially started this project myself, but in carefully attempting to remove the remaining studs the first two I tried broke off in the head. One of them (right next to the originaly broken one--the top rear) was rusted halfway through and there was no saving it. The other was rusted a quarter the way through. I stopped right there and took it to my local ASE mechanic since I knew I did not want to mess with the hassles of drilling broken rusted bolts out of an aluminum head, not to mention I would have had to pay to have the manifold planed flat anyway. After $400 bucks ($100 in parts) it is as good as new. I know, I just threw away 300 bucks, but IMO sometimes it is worth leaving the real pain in rear repairs to the pros. BTW, I didnt realize just how bad that exhaust leak really was until now. This think sounds very quiet and like a new truck again!
 
  #7  
Old 01-08-2008, 09:10 AM
99f350sd's Avatar
99f350sd
99f350sd is offline
Lead Driver

Join Date: May 2003
Location: Lyndonville, Vermont
Posts: 9,238
Received 32 Likes on 26 Posts
I hope you bought a new manifold and new stainless st studs from ford as this is the only real fix. You shouldn't deal with old manifolds. I think I paid $135.00 each for the manifolds..studs are pricey but stainless.


Dick
 
  #8  
Old 01-08-2008, 02:06 PM
mtfrdlvr's Avatar
mtfrdlvr
mtfrdlvr is offline
New User
Join Date: Nov 2007
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Yes I did get the new Ford stainless hardware and a new "revised" gasket, but no on the new manifold. Ford parts guy and my mechanic both said that if the OEM manifold is not too warped, then just planing it flat works fine. This is the first I have heard of replacing with a new manifold. There was very little warpage, and no other problems such as cracking. Now I hope it lasts.....
 
  #9  
Old 01-08-2008, 04:16 PM
99f350sd's Avatar
99f350sd
99f350sd is offline
Lead Driver

Join Date: May 2003
Location: Lyndonville, Vermont
Posts: 9,238
Received 32 Likes on 26 Posts
They get thin with rust and crack. You may be ok if you don't see salt..


Dick
 
  #10  
Old 01-08-2008, 06:51 PM
metalcaster's Avatar
metalcaster
metalcaster is offline
Junior User
Join Date: Jan 2002
Location: Southwest lower MI
Posts: 95
Likes: 0
Received 0 Likes on 0 Posts
I had the driver's side done on my 6.8. considered doing it myself, but very glad I didn't. As it was the mechanic had to pull the head as one stud couldn't be drilled out. he brought the head to my shop where we clamped it to a bridgeport table and carefully drilled it out and re-tapped the hole. When put back together everything worked great and it was money well spent.
 
  #11  
Old 01-08-2008, 08:12 PM
99f350sd's Avatar
99f350sd
99f350sd is offline
Lead Driver

Join Date: May 2003
Location: Lyndonville, Vermont
Posts: 9,238
Received 32 Likes on 26 Posts
I had 3 broken studs on pass side. I welded to them to remove with mig welder. I was not gonna take the engine apart. It took awhile but I had time...20 hours in the wheel well.


Dick
 
  #12  
Old 01-09-2008, 09:03 PM
bbender85's Avatar
bbender85
bbender85 is offline
Logistics Pro
Join Date: Jul 2004
Location: Caledonia, MI
Posts: 4,825
Received 42 Likes on 37 Posts
yes, i have done every ounce of work on my truck as well... but i think this one is gonna be an exception..
 
  #13  
Old 02-03-2012, 06:38 AM
countryboy73703's Avatar
countryboy73703
countryboy73703 is offline
Senior User
Join Date: Mar 2011
Posts: 358
Likes: 0
Received 0 Likes on 0 Posts
well.. I'm glad that I read this fourm before I tackled this job... I'm really worried about the studs... and i was about to drive on base and use there auto shop since it's cold out side, and get started.. but now I'm having 2nd thoughts, and just taking it to the dealer.. or maybe just putting off the whole thing all together since i'm having an issue with my brakes, and just trading if for an 08 diesel... but I have an '05 5.4 3v right now, not sure if all the stuff in the above posts still applies or not.. any ideas?
 
  #14  
Old 02-03-2012, 07:00 AM
4x41977's Avatar
4x41977
4x41977 is offline
Senior User
Join Date: Oct 2007
Posts: 214
Likes: 0
Received 0 Likes on 0 Posts
I just got done doing mine on the passenger side. It's not that bad as long as you jack the motor up and pull the fender well out. I had three broken. Used vice grips on one and easy out on two of them. Piece of advice use heat on the nuts. They will come off a lot easier
 
  #15  
Old 02-03-2012, 07:33 AM
countryboy73703's Avatar
countryboy73703
countryboy73703 is offline
Senior User
Join Date: Mar 2011
Posts: 358
Likes: 0
Received 0 Likes on 0 Posts
I'm assuming you also have an 04-07, i don't exactly have access to a heat source like a torch, I already figured I was going to take out the fender well plastic, and the dealership machanic gave me the advice to take out the right engine mount and jack it up.. how long did it take you? and did you have to plane out the sealing surface?
 


Quick Reply: Exhaust Manifold Leak 5.4 '99 F250 SDuty



All times are GMT -5. The time now is 12:05 PM.