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????