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Item dropped into intake

Tiny
JUSTIN SOLIZ
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
I dropped a nut that went on my intake valve, engine got cranked and shortly after started making clanking noise like the nut was bouncing around then shut off. Started it up again and no more random clinks but a consistent one plus smoke out exhaust. I have removed all spark plugs and passenger cylinder head plus used magnet rod in every crevice I saw and pulled nothing out. My manifold gasket was shot but I don't see anything else. Any chance the nut shot down to oil pan or should I keep looking elsewhere?
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Thursday, February 14th, 2019 AT 5:32 AM

12 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

If the cylinder head is off the vehicle and it is not stuck in a valve and you do not see it on top of the piston, then my guess is it is probably stuck in that banks muffler.

Thanks,
Alex
2CarPros
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Thursday, February 14th, 2019 AT 9:16 AM
Tiny
JUSTIN SOLIZ
  • MEMBER
  • 7 POSTS
So what do I need to do next? Is it safe to replace gaskets and rebuild or do I need to keep on looking?
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Thursday, February 14th, 2019 AT 9:18 AM
Tiny
SCGRANTURISMO
  • MECHANIC
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Hello again,

Is there any damage to the valves or the valve seats(where the valve seals itself when closed on the cylinder head? Is there any noticeable damage to the piston rings or the top of the piston? If the answer, is no, then yes it is safe to rebuild. If yes, or if you are unsure, please get to me with your concern.

Thanks,
Alex
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Thursday, February 14th, 2019 AT 9:46 AM
Tiny
JUSTIN SOLIZ
  • MEMBER
  • 7 POSTS
So got both cylinder heads off and I do have a bent rod. So I will need to replace all of those obliviously, but I will attach an image of my pistons so you can tell me if I am okay.
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Sunday, February 17th, 2019 AT 10:51 AM
Tiny
JUSTIN SOLIZ
  • MEMBER
  • 7 POSTS
Here they are.
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Sunday, February 17th, 2019 AT 10:52 AM
Tiny
JUSTIN SOLIZ
  • MEMBER
  • 7 POSTS
One piston wall has a hairline fracture on part of it but it doesnt go all the way to the bottom or top.
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Sunday, February 17th, 2019 AT 10:54 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Sorry to hear about your valves. The pistons look okay to me from the pictures. That's a decision that you will ultimately have make though. Do you need factory instructions on rebuilding the cylinder heads for your vehicle? Let me know one way or another please.

Thanks,
Alex
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Sunday, February 17th, 2019 AT 1:51 PM
Tiny
JUSTIN SOLIZ
  • MEMBER
  • 7 POSTS
I thought I could just replace the rod that sits under the lifter and be good. So if there is more then yes I definitely need that information. Also, if you have the torque order and specs for reassembling the heads and manifold that would be awesome.
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Sunday, February 17th, 2019 AT 1:54 PM
Tiny
SCGRANTURISMO
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Hello again,

I did not see that last post. I would not take a chance with that engine block. At the very least it looks like a new sleeve will have to be put into that cylinder. I am not telling you to do this but if it were me, I would consult a local machine shop of your choosing. I have no information to give you on this procedure. Let me know what happens.

Thanks,
Alex
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Sunday, February 17th, 2019 AT 1:57 PM
Tiny
JUSTIN SOLIZ
  • MEMBER
  • 7 POSTS
You are talking about the one with the small line in it? It doeskin have an indent on the walls when I ran my finger around it.
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Sunday, February 17th, 2019 AT 2:09 PM
Tiny
SCGRANTURISMO
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Okay. I am just worried that you will get your engine reassembled and then find out you have coolant leaking through your cylinder wall and have to tear it back down again. It is entirely up to you. I will get you those instructions in a few. I am answering this on my cell phone and will get those when I get home to my computer.

Thanks,
Alex
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Sunday, February 17th, 2019 AT 8:07 PM
Tiny
SCGRANTURISMO
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Hello again,

I have included installation instructions for both the cylinder head and the intake manifold for you in the diagrams below. Hope this helps and let us know if there any thing else we can do for you.

Thanks,
Alex
2CarPros
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Sunday, February 17th, 2019 AT 9:51 PM

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