Putt - putt from exhaust - JeepForum.com
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post #1 of 5 Old 06-13-2011, 10:36 AM Thread Starter
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1984 CJ7 
Join Date: Jun 2011
Location: New Providence
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Putt - putt from exhaust

Last January on a cold night, CJ suddenly began sputtering going uphill. Had only been running 5 minutes. Here's what I have done in sequence since then in an effort to remedy condition.. Removed cat converter and replaced with straight pipe; complete tune up - plugs, wires, cap, rotor, fuel filter, cleaned carb; disconnected high altitude wire from block; repaced stock Carter carb with Webber; vacuum line to EGR valve was never present, so I removed EGR & plugged hole in manifold; oxygen sensor valve was never present; removed valve cover to check rods/springs.. all OK; replaced distributor with new one.... rotated for ideal timing.... Jeep still makes putt - putt noise.. exhaust is clear. Seems to worsen the longer I drive - sometimes to the point of stall. Anybody????

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post #2 of 5 Old 06-13-2011, 01:54 PM
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1984 CJ8 
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Check the exhaust manifold bolts. They loosen. If not them check exhaust manifold for cracks.
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post #3 of 5 Old 06-13-2011, 04:39 PM
Bubba Ray
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1984 CJ7 
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I had a pushrod slip out from the rocker but you have checked that.
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post #4 of 5 Old 06-13-2011, 05:20 PM
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1984 CJ7 
Join Date: Jan 2007
Location: Doylestown, PA
Posts: 7,107
Well, look at it this way, a Putt-Putt noise is better then a Chitty Chitty Bang Bang noise.

I guess I'm no help....

1984 CJ-7 Renegade
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post #5 of 5 Old 06-13-2011, 05:29 PM
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I'm wondering if it could be the ignition module.
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