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Old 08-03-2015, 08:33 AM
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74'Cj5

Hello everyone! So I'm about to get back in the Jeep family with a 74' CJ5 and have a few questions. (New to CJ's). I'm pretty sure its mostly stock as far as motor, Tanny, axles, etc.. And was wondering what they came with stock and how good they are. I know its a I6, 3 speed manual and that's about it.
Also... He says it has a "fouled" spark plug, so I was wondering if any of you fine people had similar issues and knew what might cause the plug to foul. Any help would be appreciated.

This seems like a great deal even with the spark plug issue just trying to get a feel for what I'm going to have to do with her.
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Old 08-04-2015, 05:08 PM   #2
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You need to check compression on the bad cylinder. Could be bad/ broken piston ring, bad valve guide. Something like that. Swap the plug and see how long it takes to foul. If it takes a long time live with it, little time and it's an issue. There is a thing called a non-fouler, basically it is an adapter that spaces the plug out of the combustion chamber and helps it last longer till it fouls up. Also a bit hotter plug may help too.

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Old 11-07-2015, 04:46 PM   #3
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They were available with a 232 or 258 straight six, or a 304 V8 in 1974.
The "fouled plug" is probably something else, or he would have spent a dollar and taken 1 minute to change it out to make the sale. Pull the plugs and post up a pic of them. Then do a compression test and post the results. Another diagnostic tool is a vacuum gauge and see how it behaves and what vacuum it pulls.
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