F134

Well, last night evening while driving my CJ, there was what sounded like a valve train noise. I stopped
@ a traffic light. Started out again and then a backfire and the motor quit. I pulled over and tried to
start it. The engine turned over w/ no valve "noise" and no compression. Checked the usual suspects and
everything seemed OK.

I called Crystal and asked her to pick me up and I got the Cherokee/tow rig and towed it home. I'm thinking
that the fiber crankshaft gear let go. So do I need to start w/ taking the timing cover off for a looksee? Is there
anything else I can look for? I'm also assuming I need to pull the oil pan to clean out any residual crap from
the gear, if that is the issue.

 

:v6:

 

:hurrican:

 

I've never heard of the fiber gear going south, but that doesn't mean it's unheard of. The no compression thing really makes me wonder...

 

I'm just trying to think what all it could be before I start digging into it. I did have a friend
of mine destroyed 2 of them. IIRC it was because lack of oil pressure. He had a remote
oil filter that was suspect.

I'm had planned on doing what jeeper50 suggested first. Then removing the timing cover
and take a look. Hopefully it's nothing major, but I doubt it.

Ordered the FSM finally...

 

I wish I had a warm, fuzzy answer John but it doesn't sound good. A spun bearing would account for the "rattle" before it died, and that would sure kill the oiling to the timing gears.

I hope I'm wrong.

 

That's been in the back of my mind. Keeping my figures crossed. Thanks Steve.

Gonna take my time. Lizzy's probably going to be down for a while. So I have
nothing but time.

 

I threw the roll pin on the dist gear on the 225 one time.
Sputtered and died. Cranking it over, it felt like no compression.
I'd say go with your gut, check that gear.

Good luck, keep us posted...

:tea:

 

Thanks Jim.

 

Finally found the culprit. After running some test yesterday, and talking w/ Billy, we
narrowed the problem down. Today I took the timing cover off and this is what I found:

http://s163.photobucket.com/albums/t284/JTGalajda/Jeep Stuff/Motor/?action=view&current=PA110003.jpg



http://s163.photobucket.com/albums/t284/JTGalajda/Jeep Stuff/Motor/?action=view&current=PA110005.jpg



If you go to the pictures and enlarge the image you can see the camshaft gear was stripped.
Not sure how it happened, but being 40 years old and constantly in oil might have something
to do w/ the fiber gear coming apart.

This is now the 3rd camshaft gear I have seen come apart. One on mine and 2 on my friends.
I'm planning on getting better pictures when I remove it. New parts will be here Wednesday
so hopefully she'll be running next week.

Thanks for the help guys.

 

The pics are upside down

 

Better??

 

Gear removed and replaced. Finally!!!





The culprit!!!

 

Pictures say a 1,000 words. Thanks.

 

IIRY???
Looks like that new gear if fiber also.. Does anyone make a steel replacement? Just curious, the original lasted quite some time I guess...

 

I looked into it. And couldn't find any. You would think at this time there could be a some type
of carbon composite they could use for it.

But your correct Patrick, and I'm thinking it lasted 40+ years. If it wasn't replaced when rebuilt.

That is the question I've been asking myself. I would think it would be part of a rebuild. But maybe
to cut corners they didn't. Based on what I've found of this CJ, the PO may not have had it done.