Default Trouble Timing cj5 

Old 08-10-2009, 09:01 PM   #1
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I am having a heck of a time with my Cj. It ran O.K. when I brought it home, but needed a tune up. I replaced wires rotor cap plugs etc. Set the carb mixture screws 1 1/2 turns out. When I went to time it, the marks were not even close. I got the marks to line up , but I had to turn the distributor alot. Needless to say it ran aweful, backfiring etc. I set it back close to where it was, it still backfires a little and is not running real strong. Seems hot too. Why would my timin marks be so off? Could the dist be off a tooth? Would that even make a dif? Thanks for any help.

 

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Default Re: Trouble Timing cj5 

Old 08-10-2009, 11:04 PM   #2
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What does your timing mark line up with on the degree scale?
Is your distributor cap cracked, not seated properly, same with your rotor.
Is there any chance that the spark plug wires are out of order?

What did you gap the plugs to?
Check vacuume lines
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Default Re: Trouble Timing cj5 

Old 08-11-2009, 12:21 AM   #3
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I also would double check the firing order versus where you have your plug wires, it is not hard to cross wires when changing them out and if they are ok, and your cap and plugs are ok then this should get you in the right direction:
properly setting the time

 

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Default Re: Trouble Timing cj5 

Old 08-11-2009, 07:46 AM   #4
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Hello Nixon and welcome to our site!

I'm assuming you did not pull the dist - correct? If you did not, about the only way for the marks to be off so far is -

  • The cap is on wrong
  • The wires are on wrong
  • The rotor is on wrong
  • You have the timing light connected to the wrong wire
  • The advance mechanism under the rotor is locked or jammed
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Default Re: Trouble Timing cj5 

Old 08-11-2009, 10:05 AM   #5
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Retrace your wires and make sure you have them in the correct order, if so, I would just reset the time, in my experience with timing ( which is my weak point) a tooth off can make a hell of a difference!
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Default Re: Trouble Timing cj5 

Old 08-11-2009, 11:27 AM   #6
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what engine do you have? If it is an odd fire V6 you can really get things off with improper wire placement
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Default Re: Trouble Timing cj5 

Old 08-11-2009, 12:29 PM   #7
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Thanks guys for your help. I should have mentioned it is a 258 6cyl. I'm not sure the dist is in right. The guys I bought it from started tinkering and while he did put some nice parts into it, I'm sure he knew all what he was doing. I've spent alot of time straightening things out. The Vac advance looks new, so I'm guessing he did pull it out. I'm sure the firing order is right and the cap and rotor look fine. the timing mark is currently way to the left or counterclockwise of the scale. You can barely see it where it is at.

 

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Default Re: Trouble Timing cj5 

Old 08-11-2009, 12:34 PM   #8
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Quote:
Originally Posted by Nixon View Post
Thanks guys for your help. I should have mentioned it is a 258 6cyl. I'm not sure the dist is in right. The guys I bought it from started tinkering and while he did put some nice parts into it, I'm sure he knew all what he was doing. I've spent alot of time straightening things out. The Vac advance looks new, so I'm guessing he did pull it out. I'm sure the firing order is right and the cap and rotor look fine. the timing mark is currently way to the left or counterclockwise of the scale. You can barely see it where it is at.
If he pulled the dist and put it back in wrong - that is your problem. If you turn the engine over to Top Dead Center (the timing mark on the balancer at zero), is the rotor facing #1? If it is facing towards #6 then you need to turn the engine over 360 degrees.


Now that the rotor is some what facing #1, is it facing directly at the location for #1 on the cap? If not, you need to pull the dist and rotate the gear one tooth at a time until it is.
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Default Re: Trouble Timing cj5 

Old 08-11-2009, 03:42 PM   #9
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Quote:
Originally Posted by Nixon View Post
I am having a heck of a time with my Cj. It ran O.K. when I brought it home, but needed a tune up. I replaced wires rotor cap plugs etc. When I went to time it, the marks were not even close. .

Nixon you say it ran ok when you brought it home.
If you didn't remove the dist... Are you sure your wires are on right.

Your timing chain might have jumped a tooth or two also.
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Default Re: Trouble Timing cj5 

Old 08-12-2009, 09:07 PM   #10
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Well, I'm about 99% sure My timing chain jumped. I guess I'll be tearing into it this weekend. On a better note, I'm sure it will ru much better. Thanks for all you guys help. Any tips? I'll let you know how it goes.

 

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