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  Topic Review (Newest First)
02-28-2020 11:16 PM
zeebart Just saw that last post...I did play around with the clutch push rod a couple of years ago and adjusted it because I was getting a little bit of grinding. There isn't really any play in the clutch peddle. I think we're getting close to the problem. Gonna check out the push rod again. I did install a new master cylinder last summer it could just need a better bleed than I did since those systems work together.
02-28-2020 11:08 PM
zeebart Thanks for all the comments. What a great community. Hadn't thought about the clutch. Anytime I had a clutch that went out there were other clear symptoms before hand - I've never encountered a symptom like this. The tranny rebuild was done before I got the Jeep. I checked the gaps on the plugs and they were good but thanks for the tip on those. The shop I usually gets parts at it was the only kind they carried that worked in my CJ. There are lots of other sources though. I'll look into the clutch and see what I find. Will get back to you all. Cheers...
02-27-2020 11:30 PM
BagusJeep Have you got a small amount of play at the clutch pedal? You should have about 1/4" or more. If you look underneath at the clutch slave cylinder and pushrod, the rod should be loosish when you are not trying to change gear. Most of them are adjustable with a nut on the rod, what you want to do is make sure it is fully disengaged, there should be a spring on the outside pulling the clutch release arm back so that there is nothing pressing on the clutch cover plate but it is not very strong so the pushrod should feel loosish. If it is rock hard, the arm may be pushing the bearing on to the cover plate.

If everything seems ok but the clutch only bites at the top of the pedal, it could require bleeding or the clutch is worn.
02-27-2020 09:30 AM
Hurricane4 Just checked RockAuto for your year CJ7 and engine/manual transmission. Your Jeep has a clutch master cylinder. Good call John.
02-27-2020 09:28 AM
Hurricane4 Also - Was the flywheel re-surfaced?
02-27-2020 09:25 AM
John Strenk
Originally Posted by Hurricane4 View Post
zeebart - Your Jeep has a manual transmission. You stated in your original post the transmission was rebuilt. Was a new clutch, pressure plate and throw out bearing installed at the time of the rebuild? Does your Jeep have a slave cylinder for the clutch or linkage?
So it might be a simple as readjusting the clutch linkage

I think the 4 cyl has a master/slave setup and I think that is also adjustable.
02-27-2020 09:22 AM
Hurricane4 zeebart - Your Jeep has a manual transmission. You stated in your original post the transmission was rebuilt. Was a new clutch, pressure plate and throw out bearing installed at the time of the rebuild? Does your Jeep have a slave cylinder for the clutch or linkage?
02-27-2020 09:16 AM
John Strenk Most likely the clutch but I had the same symptoms when my rear hub started to wear on my rear axle.

But that had a grinding noise going along with it.

It would slip and catch, slip and catch and then, at the right speed, it would grab and seem fine until I made a turn again. That probably had something to do with the LSD in the rear axle.
02-27-2020 12:39 AM
Originally Posted by BagusJeep View Post
clutch slip?
That's what it has to be. Otherwise how can a manual trans have to "catch up"?
02-26-2020 09:14 PM
BagusJeep clutch slip?
02-25-2020 05:09 PM
uptillnow From your description of how it acts, it sounds like the transmission to me as well. "I hit the gas and the engine does rev, but the tranny doesn't catch up for a little while."

Although you have a Weber carburetor and they take some specific adjustments. This may also be a problem. "(I kept failing and got turned backwards with the carb adjustments). They adjusted the timing, the carb, and added a fuel regulator."

The plugs look reasonably good, so your carburetor, and timing, can't be that far off???

02-25-2020 03:46 PM
Fourtrail Plugs look ok, but i would swap them to a normal set of plugs from autolite/champion/delco, I have never been a fan of the v-power plugs, they would wear off the outer edges of the 'V' and then your gap would grow and not want to fire correctly. Like already stated though, if your motor revs up and the Jeep doesn't speed up, then you are more looking at a transmission issue. The color/smell does the ATF have when you pull the dipstick?
02-25-2020 03:32 PM
zeebart Trying again with the pix
02-25-2020 03:29 PM
zeebart And here's a couple of the plugs...
02-25-2020 03:28 PM
zeebart Manual transmission. 151 4-cylinder '81 CJ7. Trying to send a pic see if it works...
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