Hello, I am a owner of a 90 jeep wrangle....it has the 4.2 straight 6 cylinder...I am having issues with at idle.....I have replaced plugs, wires. Dist. Cap rotary button. And installed a new webber carb....I have checked compression all cylinders have 100 to 110..so Itake it no burnt valves....any help would be greatly appreciated.....new to the jeep scene but you guys rock..thanks
Was the nutter bypass done previously? If not when you changed to a weber your computer still controls timing. Look up nutter bypass and make sure your timing is no longer controlled by the computer.
90 YJ 5.2 Magnum MS3x, D60/GM 10.5", ORI struts, 4 link
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