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Old 05-05-2015, 06:23 PM   #1
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Intake Manifold arghh

So my intake manifold blew on me today, right on the back passenger side nipple where the one hose connects, common place I'm sure especially with 150k on it..well anyway I need to change it asap as in tonight/tomorrow, I cannot afford to miss work and lose money. Anyway I picked up a Dorman Intake from AutoZone, I really, really didn't want a dorman replacement but EVERYWHERE I called, AutoZone, AAP, Napa, Assoscoated Auto Parts, every single place ONLY had Dorman, and Ford Parts is closed for the night. Anyway I said F it and I gotta go with the Dorman I need to get this thing swapped out..before I dive into it tonight does anyone have any suggestions to make the job easier? Are the fuel rails a PITA? Even with the disconnect tool? Thanks guys!

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Old 05-05-2015, 09:43 PM   #2
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Anyone? Just looking for a bit of guidance before I tackle this tomorrow morning

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Old 05-05-2015, 09:52 PM   #3
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It should be pretty straightforward. Just make sure that you torque the manifold properly.
Do you have any specific questions?
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Old 05-05-2015, 09:59 PM   #4
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Don't use an impact wrench
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Old 05-05-2015, 11:02 PM   #5
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There are a few write ups on it if you Google it. I've read several of them thinking about doing a PI swap.

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Old 05-06-2015, 06:12 AM   #6
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You can just lay the fuel rails to the side, you don't even have to disconnect them. Just start removing the TB, vac hoses, plenum etc... Make sure you have a good shop vac to get any coolant that dumps especially if it gets on/around any electronics.


Torque wrench is required, 22ft lbs is final torque and there is a specific pattern (google it). I went in 3 passes when I did mine last time and it sealed fine.
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Old 05-06-2015, 08:16 PM   #7
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Okay guys the job is done but I have a major problem...I'm idling at over 2k rpm, I cannot find a vacuum leak/unplugged hose/harness nothing..everything looks good. I got a P1506 code for idle air control over speed error...I'm gonna try replacing the IAC tomorrow could that be my problem?

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Old 05-06-2015, 08:23 PM   #8
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Okay guys the job is done but I have a major problem...I'm idling at over 2k rpm, I cannot find a vacuum leak/unplugged hose/harness nothing..everything looks good. I got a P1506 code for idle air control over speed error...I'm gonna try replacing the IAC tomorrow could that be my problem?

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Probably a pinched line or something. Iac could be the issue or maybe tps?
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Old 05-06-2015, 09:06 PM   #9
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Probably a pinched line or something. Iac could be the issue or maybe tps?
I gave up for the day, looks like I gotta miss another day of work arghh..tomorrow I'm gonna have to try replacing the IAC and pray to everything holy that fixes it..if it does not, I think my only other option is to remove everything again, and make damn sure that the manifold is seated properly on the heads , I really don't see how it wouldn't be as all screw holes lined up pretty damn on point. Everything was torqued to spec. The last thing I tried for the night was pulling the throttle body to make sure that was seated properly on the manifold and it definitely is so that's not the problem..I just really , really, really hope I don't have to take this Fing thing off again tomorrow . shiiiiiiiit FML

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Old 05-07-2015, 08:08 AM   #10
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IAC did not fix it ... WTFFFFFF

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Old 05-07-2015, 10:54 AM   #11
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Got her running back to normal! Idk what it was, but I took everything apart, looked like one of my injectors didn't seat right in the new manifold, also the paper that came with the manifold said final torque was 18ft lbs, well when I had everything off I remember reading somewhere that somebody had trouble getting it to properly seal if torqued under 24ft lbs..well I decided to torque them all down to 24ft lbs, in the correct sequence of course, I put everything back together, and now she's back to normal..idk if it was the manifold gasket not tight enough, or a loose injector, or a pinched hose that fixed itself when taking everything part again, or a combination of all, Im just thankful shes running again..thank the lord lol

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Old 05-07-2015, 11:19 AM   #12
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Great to hear. Sucks when stuff breaks

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Old 05-07-2015, 02:16 PM   #13
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Great to hear. Sucks when stuff breaks

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Thanks TJ
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Old 05-07-2015, 03:22 PM   #14
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Thanks TJ
Lawlz.
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Old 05-07-2015, 06:43 PM   #15
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I got 99 problems but a manifold ain't 1.... #Bullittmanifold


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Old 05-07-2015, 07:55 PM   #16
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i got lucky when that happened to me. i was able to clamp the hose to the remaining part of the outlet and limp for a couple days while i waited for it to ship. depending on where you got the manifold from, it may have a warranty. so if it vacuum leaks anytime, they might give you your money back if your lucky. otherwise, theyl swap it with a new one.
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Old 05-07-2015, 07:56 PM   #17
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I got 99 problems but a manifold ain't 1.... #Bullittmanifold


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Yeah and that adds 25-30 lbs to the nose of your car over the PI lololol.

PI manifold 4lyfe yo!

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Old 05-07-2015, 11:03 PM   #18
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I got 99 problems but a manifold ain't 1.... #Bullittmanifold


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If you're having manifold problems I feel bad for you son
I got 99 problems but a manifold aint one
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Old 05-08-2015, 06:10 AM   #19
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If you're having manifold problems I feel bad for you son
I got 99 problems but a manifold aint one
If you havin intake problems i feel bad for you son, i got 99 problems but a leak aint one.
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Old 05-08-2015, 07:49 AM   #20
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If you havin intake problems i feel bad for you son, i got 99 problems but a leak aint one.
damn beat me to it
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Old 05-08-2015, 11:56 AM   #21
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I definitely feel a difference with this Dorman intake, my exhaust just doesn't seem has free flowing, it sounds like it changed the whole tone of my exhaust just a bit...is this because of the restrictions on this intake over the PI intake I had? Or should I be digging for a possible small vacuum leak?

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Old 05-08-2015, 07:07 PM   #22
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I have heard others report that their car sounded different with the dorman intake. And have reported loss of some power Also.

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Old 05-08-2015, 07:33 PM   #23
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The Dorman is basically a NPI intake. You are probably down 10 or 15 over what you were. But at least the car is back up and running and you know how to do it now. Swap to a FRPP one when you have a few spare days off and the $$$ to do it.
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Old 05-08-2015, 10:45 PM   #24
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The Dorman is basically a NPI intake. You are probably down 10 or 15 over what you were. But at least the car is back up and running and you know how to do it now. Swap to a FRPP one when you have a few spare days off and the $$$ to do it.
10-15 say whaaaaat? Yea I definitely feel the difference, my exhaust is what bothers me the most, it literally sounds like a new car, not the same AT ALL..I talked to the woman and got the green light to order a FRPP one in the next few weeks 👍👍..after this swap I shouldn't have a problem doing it again in well under 2 hours. F this Dorman lol, thankful I'm on the road but damn this thing really does blow.

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Old 05-09-2015, 02:18 AM   #25
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10-15 say whaaaaat? Yea I definitely feel the difference, my exhaust is what bothers me the most, it literally sounds like a new car, not the same AT ALL..I talked to the woman and got the green light to order a FRPP one in the next few weeks 👍👍..after this swap I shouldn't have a problem doing it again in well under 2 hours. F this Dorman lol, thankful I'm on the road but damn this thing really does blow.

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You probably could have got the PI one 2nd day or even overnighted and still been ahead of buying a PI down the road. Hind sight is 20/20 though, and you had to do what you had to do, right? Im sure you will get it corrected soon and now have the experience to knock it out in no time!

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Old 05-09-2015, 08:51 AM   #26
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You probably could have got the PI one 2nd day or even overnighted and still been ahead of buying a PI down the road. Hind sight is 20/20 though, and you had to do what you had to do, right? Im sure you will get it corrected soon and now have the experience to knock it out in no time!

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Yea kinda kicking myself for it at the moment . I heard about the Dorman restrictions, and I knew I'd feel a bit of a difference, but dude the difference is night and day . exactly, i had to do what I had to do, 2 weeks it'll be swapped with a PI, like I said after doing it I'm pretty confident I can get the job done in about an hour

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Old 05-09-2015, 10:18 AM   #27
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Just don't buy a used one. Buy new from AM or LRS. Ford Racing.

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Old 05-09-2015, 10:41 AM   #28
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Big pat on the back for your persistence and hard work. Love it. What I found on Google was:
" peak gain of 14whp and 24wtq with only changing the manifolds"
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