77 CJ5

Tiny
BEAGLETRAP2000
  • MEMBER
  • 1977 JEEP CJ5
  • V8
  • 4WD
  • MANUAL
  • 66,000 MILES
Hello. Here is what happened.I got this jeep 4 weeks ago. My mistake.I drove it home on the highway for about 150 miles. Went out the next day to take a ride. Went about 15 miles and at about 40mph it totally locked up the drive train. Got it home and found the t150 seizqd up. Replaced tran, with same. Jeep only has 66000 original miles, didnt want to take away from originality. Then jeep would start. Did some tests and replaced cap, rotor, distributor, module, solinoid, cables, rebuilt carb, etc.I wanted to start fresh. Did further testing and found excessive timing chain wear. When trying to time jeep the timing mark on the damper was 1 1/2 to 2 inches below pointer on timing case. Replaced timing chain, did the install test and had 22 pins between mark on cam and crank gear. Reinstalled distributor and stared, but the timing mark is still in the same pcsition with light.I thought maybe the damper spun, but with piston on tdc the timing pointer is ot tdc. It would run but not smooth, it idles okay at points, but when reved up, it will pop through exhaust and sometimes the card. The compression all all cylindrers is 139 to144. Then I tested power from ignition switch to through the complete starting and ignition system. Found power in all, even - side coil blinks when tuning over. Tells me distributor trigger wheel is working through pick up. Now when reassembled it has no spark.I need to fix at least two things here, intermediate spark plug firing, and timing issue.I am a disabled, but have been a certified mechanic for 25 years, just dont do this everyday anymore. I have forgot more than I remember. So I thank you in advance for any help you can provide. Sorry for length of question. Jim
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Wednesday, February 16th, 2011 AT 3:44 PM

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Tiny
HMAC300
  • EXPERT
Ok, looking intomy ancient stuff here, the timing chain goes dot to to on this vehicle. #1 is on the left bank incase you were using wrong bank. If it's popping through exasut check for a bent/broken pushrod or rocker arm. These engines did this after sitting for a while. I'd also check for a vacuum leak with choke cleaner. Or a bad/soft hose. If you've done this professionally you know the drill.
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Wednesday, February 16th, 2011 AT 8:15 PM
Tiny
CJ MEDEVAC
  • EXPERT
It's Possible that your ignition module could be bad, Have it tested at Autozone, Advance Auto, ETC for Free!

Have it tested 5-8 times to warm it up. If it fails the last few replace it. Before you leave, do the new one the same way! (Don't Ask!)

What about restricted fuel filter. Or Filter is no longer one with "1" in and "2" Out, (No return line to the tank anymore?)

I have answered many, many of the CJ 5 and CJ 7 QuestionsMany pics, some of the timing chain etc!

If you will look thru the most recent "10" in the CJ 7 and the same for the CJ 5s, you will find them.I am unable to link you to them.

If you are Cyber-Dumb like me!

Go to the top of this click on "Home". Scroll a bit, on the right, is all the vehicles, Pick "JEEP". When it pops up. Scroll a bit and pick CJ 7, CJ 5, or CJ 8 (Scrambler). When that pops in, Start Going Down The List!

You will see How far I will go to assist, if I can.I don't know it all!

Come back and let me know if any of that helps (This will cut down greatly, on my Hunting and Pecking!)

I'm here if you need mehmac300, is here too!

I blew out my transfer case recentlyyou will see pics of it on your quest!

Didn't mean to jump in on you, hmac300, CJs are my thing. Older rigs too.I try to stay away from the newer computer controlled rigs, unless it's a Generic problem.I'm now a Plumber, with 30 years of CJ daily drivers, and "Major repairing experience" (not by choice, but by necessity).

The Medic
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Thursday, February 17th, 2011 AT 2:59 AM

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