PI Intake/Cam install problem

Discussion in 'SN95 4.6L Mustang Tech' started by Dusstbuster, Sep 24, 2006.


  1. Dusstbuster

    Dusstbuster I love meat more than anything! I just have a spec

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    Ehh...what? I know for sure there isn't a gasket on the manifold. That picture is just of the manifold upside down with the 2 gaskets I just bought today sitting on it...
    #61
  2. stangGT97

    stangGT97 New Member

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    air leak. No RTV around the coolant ports when using NPI gaskets.

    that would be a distinct possibility, but why would there be NPI gaskets built into a PI manifold? Unless I'm not seeing something (which is possible)
    #62
  3. Outlaw97GT

    Outlaw97GT Member

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    My bad, in the pic it looked like it had the o-ring gaskets on the intake.
    Dorman intakes are like that.

    [​IMG]
    #63
  4. Dusstbuster

    Dusstbuster I love meat more than anything! I just have a spec

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    Ahh nope, I got the intake from karkraft. No gaskets and had to get it drilled. That intake looks like a lot less of a headache though, just set it down and you're good to go? Maybe it would have been worth it to fork out the extra $40 or whatever to get that, I mean...it comes with gaskets ($16) and tapped for the 2nd sensor ($15). Oh well, live and learn, you get what you pay for.

    We've got the newest set of gaskets on the manifold right now with RTV around the air ports, curing as we speak. Think we should bring it inside if it's going to freeze out tonight? Tomorrow we'll slap it back on for the 800th time and hopefully be good to go!
    #64
  5. Outlaw97GT

    Outlaw97GT Member

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    The dorman PI intake also has both sensor ports on the cross-over.

    Good luck, I hope it cranks right up and purr's....:nice:
    #65
  6. Dusstbuster

    Dusstbuster I love meat more than anything! I just have a spec

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    reassembling as I type
    #66
  7. Dusstbuster

    Dusstbuster I love meat more than anything! I just have a spec

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    P0300 still.

    Someone wanna inform me exactly what knock/ping/detonation is supposed to sound like? When you're under the car it sounds like every once and awhile someone is like inside the exhaust tubing and slightly knocking on it...a metal creaking noise/knocking noise. I'm assuming that's why it's called "knock"?
    #67
  8. JOE 98 4.6 GT

    JOE 98 4.6 GT New Member

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    jjjjjjjjjjjjjjjjjjjjjjj jjjjjjjjjjjjjjjjjjjj jjjjjjjjjjjjj

    #68
  9. JOE 98 4.6 GT

    JOE 98 4.6 GT New Member

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    I have changed my intake and did not use any rtv and had no leaks from the bottom of the intake. but i think i over tightened my thermostat housing and cracked my replacement intake there. Where did you purchase the intake in this picture, and is that aluminum on the front of the intake?
    #69
  10. stangGT97

    stangGT97 New Member

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    I got that intake from Americanmuscle.com w/ the stangnet discount. Did you install a PI intake or an NPI intake onto your heads? If you did PI to NPI, I'm surprised you have no leaks without using RTV. There are clearly spots where the NPI gaskets fail to seal the PI manifold, and spots where the PI gaskets do not seal the water jackets. The manifold I have has the aluminum crossover, I'd assume that pretty much any replacement intake you buy now has it.
    #70
  11. stangGT97

    stangGT97 New Member

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    best description of detonation I've heard was shaking marbles in a coffee can. There is no way the manifold can be your culprit now... it has to be somewhere in the cam install... unfortunately I've never done one so I wouldn't know where to look
    #71
  12. COramprat

    COramprat Drone Driver Mod Dude

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    Normally you wouldn't get detonation at idle. Is that what you are hearing, noise at idle?
    #72
  13. Dusstbuster

    Dusstbuster I love meat more than anything! I just have a spec

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    Well being as i've never sat and listened to what my engine used to sound like at idle, I don't know if all these random noises are supposed to be there or not. At one point though it sounded like every once and awhile there was a little dwarf in my exhaust that would tap on the sides or something...don't know how to explain it really! It was at idle too yes. Now i'm beginning to think it's cam related just for the fact that the idle is so rough, when you sit in the car when we start it you can just feel everything shaking the idle is so rough. I don't get what could have gone wrong with the cams though!

    What's the best way to check and make sure the timing is correct or that everything cam-wise is correct? I'll tell you this much, I am NOT taking the chain cover off. I'm not messing with the pulleys and stuff like that, if it comes to that i'm selling the car. Also if it's a head gasket (will be testing compression on monday night or tuesday of next week) i'll be selling the car too probably, or the engine at least. I'm sick of messing with it, it's not fun anymore, it hasn't been fun the last 2 times.

    Here is what the latest setup involved: New copper core plugs, NPI gasket sealed like StangGT97 said. We tested all the plug wires and none of them are broken, all resist according to my dads voltmeter. New oil and filter, and yeah...thats all I can think of right now. Not sure if its leaking coolant again or not, we didn't run it long enough to find out. We did check the plugs once since we started it up this time and they looked fine for once, but last time it didn't start leaking til the thermostat had opened and the coolant was flowing a little better. This weeks been the worst i've had in awhile. Family friend found out he has lung cancer in both lungs, I just failed a Calculus test, its raining and my bonnevilles windshield wipers don't work and the sunroof on it leaks, and the Mustang has been dead for a week and a half now...I hate cars.
    #73
  14. Outlaw97GT

    Outlaw97GT Member

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    How long have you let it run?
    Maybe the ecm is recalibrating...:shrug:

    Just an idea
    #74
  15. MisterCMK

    MisterCMK Member

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    Alright dustin, I'll bring up my compression tester this weekend and we'll dig into it. I have a couple of ideas that I want to check after we do the compression test.
    #75
  16. EDGE Motorsport

    EDGE Motorsport Member

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    i have a quick one regarding the cam install.. I read in a modular building book that you need to bleed the lifters of all oil before re-installing them, was this done? is it likely to make a difference?

    Good luck dude... I have a whole PI swap waiting to go on but I'm following your progress first :)

    EDGE
    #76
  17. Dusstbuster

    Dusstbuster I love meat more than anything! I just have a spec

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    Edge my suggestion for you would probably be: do the install in phases. Do the cams first or manifold first, then get it running, that way you can pinoint what part is the actual problem with the install.

    Outlaw, we've let it run for about 5-10 minutes, giving it light little revs every once and awhile. Once again though, putting it into gear causes it to start missing bad and popping from the exhaust.
    #77
  18. stangGT97

    stangGT97 New Member

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    Ok, Modular D epot has a great cam install guide, which got me thinking. Is there any way you put the cams on the wrong side? I just want to get this out of the way. You kept tension on the chains at all times and made sure you didnt skip any teeth, but if you swapped sides, you will get one hell of a lot of problems on start up. The cams are designated left and right, with left being drivers side, right is passenger side. I think you should look at this article... Just change the ***** part to Modular D epot (with no spaces), for some reason Stangnet blocks that name...
    http://www.************.com/?show=articlesdet&aid=39

    I hope this helps you. Don't give up man, there have been many times that I've wanted to sell my car but I kept going and managed to fix whatever the ailment was.
    #78
  19. Dusstbuster

    Dusstbuster I love meat more than anything! I just have a spec

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    Well when we swapped the cams we 1) checked the lobes to make sure they lined up and 2) Jason (JasonH on here) had labeled his cams RIGHT and LEFT. We're going to run a compression test on it today and see how that turns out.
    #79
  20. COramprat

    COramprat Drone Driver Mod Dude

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    Did you get the right "right and left"? Left would be the drivers side. Sometimes the mistake is made by thinking left is looking from the front of the car.

    As far as pulling the the pullies, accessories and timeing chain cover...it's not that hard. Take a step back, a deep breath, and figure out the problem. Once you get it solved you will forget about the problems. If you decide to tackle it go over the timeing tutorial and make sure you follow the steps outlined.
    #80

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