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Thread: I think my cat might be done

  1. #1
    cateraowner is offline Cadillac Owners Fanatic
    Automobile(s): Cadillac
    Join Date
    Oct 2007
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    I think my cat might be done

    so I went looking for a coolant leak last weekend and found it was the coolant bridge under the intake manifold. while puting it back together, I broke the banjo bolt, so I went to the dealership to get a new one. since obviously they didn't have one in stock they had to order it. 4 days later it came, and I put the cat back together. when I started the car up there was a heavy knocking. looking furhter into it, it looks like it's coming from the right bank underneth the valve cover. first thought was lifters, but am not sure.
    the car sort of sound like a diesel car right now. it's wired cause all I touched was the cooling and intake system. I didn't do anything with main engine.

    my oil is good at the right level and the pressure is normal. anyone have any clues what this might be?


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  3. #2
    frank moran is offline Cadillac Owners Fanatic
    Automobile(s): Catera, ..
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    Re: I think my cat might be done

    Quote Originally Posted by cateraowner View Post
    so I went looking for a coolant leak last weekend and found it was the coolant bridge under the intake manifold. while puting it back together, I broke the banjo bolt, so I went to the dealership to get a new one. since obviously they didn't have one in stock they had to order it. 4 days later it came, and I put the cat back together. when I started the car up there was a heavy knocking. looking furhter into it, it looks like it's coming from the right bank underneth the valve cover. first thought was lifters, but am not sure.
    the car sort of sound like a diesel car right now. it's wired cause all I touched was the cooling and intake system. I didn't do anything with main engine.

    my oil is good at the right level and the pressure is normal. anyone have any clues what this might be?
    did you possibly drop something in one of the intake cyl. ports? otherwise it may be just a lifter leak down which in a little time may well correct itself, all the plug wires on correct cyl?.

  4. #3
    Jamies97Cat is offline Cadillac Owners Member
    Automobile(s): Cadillac Catera
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    Jul 2008
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    Tarpon Springs FL
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    40
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    31

    Re: I think my cat might be done

    sounds like something might have fallen in the motor when you took the intake off. i cant see why a noise like that would start just after changing a banjo bolt. i wish i knew you needed one i have a few of them i could have mailed you one!

  5. #4
    cateraowner is offline Cadillac Owners Fanatic
    Automobile(s): Cadillac
    Join Date
    Oct 2007
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    260

    Re: I think my cat might be done

    Quote Originally Posted by Jamies97Cat View Post
    sounds like something might have fallen in the motor when you took the intake off. i cant see why a noise like that would start just after changing a banjo bolt. i wish i knew you needed one i have a few of them i could have mailed you one!
    thanks jamiescat, don't worry the dealership took good care of me, I got a banjo bolt for a bargine price of $17.... hahhahah

    I don't think I dropped anything in there since I had the holes plugged the whole time. only time it was open was when I put it back together.

    looks like I was over reacting a bit. I should have done a bit more research, the only thread I looked at replaced the engine because of bad lifters, so I thought that was my fait too. but anyways, the noise almost goes away completely when the engine is warm, looks like that lifter is wanting to get changed soon. not really looking forward to that.


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