Need Engine Help

[bj229r]

Originally posted by Gunslinger
Pulled the plug on the number 1 cylinder and it's not good news for me.





EDIT:  In case you havn't read the whole thread, these are brand new  (well 2 weeks old)

So that's not oil but completly coated with a layer of carbon.

My GOD man, who selected that paint color???

[lazs2]

well..   so we are back to running a compression check and actually looking in the radiator to see bubbles?

It probly is a blown head gasket..  you woulda only been out a few bucks on the test but..

cuelo is probly right at this point.. time to pull the head.    You can do it.   Keep everything organized and get a decent manual.   The neat thing these days is digital cameras... take lots of pics of everything.  

lazs

[Gunslinger]

If the hardest part is pulling the manifolds I've done that before when I did the long block swap about 5 years ago.  That's as simple as removing the fuel rail and pulling about 8 hard to reach bolts.

all the harnesses are one for one meaning they won't plug into anywere else but where they go.

I'm goin to the parts store now to get supplies, I'll take pictures and keep you all informed

[Sox62]

Originally posted by culero
Yanno, that's really great advice. It hadn't occured to me, but a professional can simply look at things and recognize where they are supposed to go. If you don't do it everyday, leaving a trail of bread crumbs might save your bacon.

Yep.

Get a sharpie and use ziplocks to label where every bolt came from.

My first thought was blown head gasket,but I stayed out because there are more informed people here than me.

[Gunslinger]

Is this enough proof that it's a head gasket.





And yes Laz I am doing a compression check.  I didn't realize the testers where only $19.99 so I sprung for one today.  

[Gunslinger]

After having to help my wife shop all day (I did buy me some new sockets universals and extensions)

I finally got around to the compression test

Here's the result

Cyl    /    1st Compression  /  max compression

1     /      90               /             120
2    /       90              /              123
3      /     89               /             119
4     /      89              /              121
5     /      94               /          149
6     /      120             /              154


I'm not sure how to read these as 5 and 6 are in limits according to my haynes manual and there shouldn't be more than 30 PSI varience between them.

Keep in mind this is an inline 6 and the problem cylinder is the no. 1.  No. 6 is all the way in the back.

[Gunslinger]

Might as well make this a play by play:

Power steering pump removed:





Radiator Drained.  Notice the superb brown colored coolant:


It was at this point that my air compressor died.  I'm not sure what's wrong with it but it won't turn on.  In addition I remembered from the last time I had this apart that most of the intake is metric.



I broke 3 vacume hoses,  they are going to be a pita to replace.





and now it's dinner time.

[lukster]

I've put heads on without a torque wrench but I don't recommend it. You should look up the tightening order and buy a torque wrench. Removing the extraneous crap is the biggest part of the job and it looks your already there. Good luck Gun.

[Gunslinger]

Got the exhust manifold off.

Got the valve cover off

Pulled a bunch of hoses

Here's the rocker arms



There's the things (cant remember the names) that hold them



The striped down motor



It's amazing that the water pump can push coolant through this crap





EDIT:

I found a nut under the valve cover.  It's kinda weird because there's nothing that's missing a nut.

[lukster]

Looks like those are the rocker arms whereas the small cylinders are push rods.

[Masherbrum]

I got ya beat Gunslinger!    I pulled my motor as my CJ7 has been in my garage since January 19th.  

Here you go:





The three sausage pieces were from my pizza as I was pointing out the carnage to a buddy, who lent me the use of his cherry picker today.  

Diagnosis:  Cylinder 5 has a shattered connecting rod, and Bearing.   The block is also broken at the bottom of the cylinder wall.   This is AMC304 is toast.   Now I'm in the market for a 360 or another 304.  

  I miss driving it.  

[Gunslinger]

I had a 304 in my 80 CJ-5.  The motor needed a rebuild and the frame rwas rusting away but I got $2k for it.

Anyone know if you can replace vacume lines with simular diameter rubber hose?

As along as it has a seal I don't see the difference but I broke three of them as they were brittle as all hell.

I can't them only at 4wd.com or quadratec.

[Masherbrum]

try bulltear

[john9001]

you should be able to get generic vacuum hose at NAPA or any auto parts store.

[nirvana]

I don't have a ton of experience but it looks like you're got the lifters labeled.  Don't get those mixed up or else....  Once again, good luck.