Broken Intake manifold bolt - Need help
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Cadillac Seville / Cadillac Eldorado Forum Discussion, Broken Intake manifold bolt - Need help in Past Cadillac Vehicle Discussion; While torqueing one of the 4 intake manifold bolt on my 1993 Eldorado it snapped. Does anyone out there knows ...
  1. #1
    lgeorge is offline Cadillac Owners Member
    Automobile(s): 1993 eldorado
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    Broken Intake manifold bolt - Need help

    While torqueing one of the 4 intake manifold bolt on my 1993 Eldorado it snapped. Does anyone out there knows the easiest
    approach to getting the broken piece of the bolt out, without damaging the engine casing? Thanks in advance for your help.

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  3. #2
    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    Several companies make "easy out" damaged fastener removal tools. You center punch what remains of the fastener, drill a divot in it with one end if the removal tool, then use the other end (a conical, reverse thread) to back it out.

    Local home improvement store or Sears.

  4. #3
    oldstuff is offline Cadillac Owners Fanatic
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    Re: Broken Intake manifold bolt - Need help

    Drilling a hole in the center of such a small bolt could end up in running off and ruining the head.
    If it is flush withe the head I would try cutting a slot in the end of the bolt with a dremmel tool and removing with a screw driver. Usually those bolts turn quite easily in thier threads without torque on them I've even removed such a bolt with an awl if it had a rough break.
    Dave
    drewsdeville likes this.

  5. #4
    lgeorge is offline Cadillac Owners Member
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    Re: Broken Intake manifold bolt - Need help

    Here is a dumb question. Driving the car with only the 3 remaining blots, would there be any major problem?

  6. #5
    drewsdeville's Avatar
    drewsdeville is offline Cadillac Owners Master
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    Re: Broken Intake manifold bolt - Need help

    You risk warpage of the plastic intake.

  7. #6
    lgeorge is offline Cadillac Owners Member
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    Re: Broken Intake manifold bolt - Need help

    Thanks for your responses.

  8. #7
    eldoedwardo is offline Cadillac Owners Fanatic
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    Re: Broken Intake manifold bolt - Need help

    use a welder , big one turn it down, small one turn it up. first weld should be a short hot one. if it humps up do another ,if it is 'flat turn it down slightly, wait 10 seconds. when the welds are high enough 'slip a nut on top weld it a little hotter and fill nut. while still hot/warm melt candle wax around bolt/hole. while it cools take something solid like an extension and a hammer (so not to marr aluminum) and gently tap all four side of the bolt. cool the head with a small rag try not to cool the head (20 seconds). put a wench on it . turn as to tighten! yes tighten about.5 or1 degree max NO More, don't put more than5-10 INCH #MAX. if it doesnt move don't worry turn to loosen same force.. if it moves great! repeat tighten /loosen until you achieve about 60 degree movement .hit the nut with a hot weld again and melt wax at the threads. do not cool try back an forth again,GENTLY. even if its coming out go back and forth as if you were tapping a new bolt hole. .Good luck and be cautious of the guys that say 'oh yah I can do it NO problem'. one wrong weld placement or a spark un-protected can take an atta boy to aw crap in seconds. if you use a 'stick' welder use short rods3-4 inches. use damp rags around weld as you do it and COVER everything else .even the windshield! If the nut breaks off try again. sounds difficult but it isn't. precision is the key ...first timer about 30 min. I use it about 2-4 times a week, beats drilling and retrieving shavings....Ed

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