Has anyone had an ignition coil work but fail at high idle? I'm having a spark issue or atleast I'm assuming I'm tired of throwing parts at it. It idles fine but as soon as I drive it it starts to not quite back fire but a small pop or should I say hiccup at around 30mph. If I rev it in park you can tell because it shakes.
It's a 350 tbi swapped to carb, heads have had a valve job new plugs wires distributor I've checked compression all cylinders are at 155.
Checked for vacuum leaks with brake fluid changed all hoses, even ran it in the night to see if it was arching anywhere and nothing.
Swapped carbs between a quadrajet and now a holley same problem Still there.
I need help before I blow this car up
It's a 350 tbi swapped to carb, heads have had a valve job new plugs wires distributor I've checked compression all cylinders are at 155.
Checked for vacuum leaks with brake fluid changed all hoses, even ran it in the night to see if it was arching anywhere and nothing.
Swapped carbs between a quadrajet and now a holley same problem Still there.
I need help before I blow this car up