Question about Honda Accord

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Repairing broken stud for exhaust manifold. Have new gasket. Two gaskets r on when I pull manifold. Should I put multiple gaskets on when I bolt manifold back on are just the new one ?

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  • Dave Yarborough Nov 14, 2010

    Thanks ! just needed a confirmation. I started telling myself things like "warped, needs two or some junk." I finally got the broken studs drilled out ,easy outed and new ones screwed in. As always simple job adds layer after layer. (remove alternator to get straight drill shot at block, exhaust off blah., blah.

  • Dave Yarborough Nov 18, 2010

    yes, what I needed

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Hi, no you only need to put the one new gasket on your bought you may find that the 2 you took off could have just been one gasket that has split into 2, some of the older asbestos gaskets where made in 2 halves and they did split so this might be what you have, they dont use asbestos gaskets any more they are banned so they now use the newer metal type and these come in one piece so dont worry about the 2 you have taken off its either a case of one gasket splitting or it could be that someone has replaced it before and forgot to take the old one off before fitting the new.

when you fit the new one make sure you tighten all the bolts about the same to ensure the gasket is compressed evenly and you should find you will have no problems what so ever, dont worry about the 2 that came off its either an older type gasket that was made in 2 halves that they no longer use or it may be someone changed it before and left the old one on by mistake, their should be only 1 gasket on their in one piece so dont worry you only need to put the one gasket back on and this will seal it for you and stop any blowing.

let me know if you have any problems or if you need further assistance ok

Posted on Nov 13, 2010

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Two works when one or two studs are broken or missing. One is good if the manifold plane is flat and not warped and all studs are there

Posted on Nov 14, 2010

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1 Answer

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Two things which come to mind are the new manifold/gasket did not seat or cracked when torqued down, or there was a problem with a stud.
For the stud, if the stud turned further into the head when the nut was tightened, it could have cracked the head. Some manifolds used bolts instead of nuts to fasten the manifold. Memory fails me which type you have, but you could check to see if all bolts have same Part# per Dealer and if different, the wrong length could have gone into the wrong place.
For Future reference, there are some new ideas in manifold fasteners by Aftermarket makers. Each fastener is 2-piece and the seats expand when the bolt is installed.
I think your new manifold cracked. Exhaust leaks sound like a knock each time that cylinder fires with the cracked port.
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Hi Don. Is a shop doing the gasket replacement or was it a D.I.Y. thing? I ask because the problem may very well be a warped/cracked exhaust manifold, or worse a cylinder head issue. If your doing this yourself, perhaps remove the exhaust manifold and take it to a shop to be checked for warpage or cracks, and simply repace it (along with a new gasket of course) if yours is found to be faulty. Also, use new hardware ( studs/bolts) to install the manifold and torque to proper torque specs. Proper torque is important.

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1 Answer

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Check this for 1996-1999 FORD 3.0L (182) V6 DOHC...
- Install the exhaust manifold with a new exhaust manifold gasket.
- Install the exhaust manifold retaining studs and tighten to 13-16 ft. lbs. (18-22 Nm) in the sequence illustrated.
Raise and safely support the vehicle.
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Starting at the front of the system tighten the Y-pipe to exhaust manifold nuts to 26-34 ft. lbs. (34-46 Nm).

- Tighten the converter to transaxle nut and bolt to 30 ft. lbs. (40.3 Nm). Tighten the converter outlet bolts to 26-34 ft. lbs. (34-46 Nm).

zjlimited_1988.jpg

Fig. Right side exhaust manifold mounting bolt tightening sequence-3.0L DOHC engine (click image for zoom)


zjlimited_1989.jpg

Fig. Left side exhaust manifold mounting bolt tightening sequence-3.0L DOHC engine (click over image for zoom)

Hope this helps (remember to rating this answer).

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have a nice day don't forget to rate me,thanks a lot.

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Engine Components
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1 Answer

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