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View Full Version : Intermittent Misfire at idle


240_fun
04-27-2010, 08:09 PM
So after bending some valves and putting on a new head MLS HG, ARP studs 248/232 cams etc, I start my KA and it has a very minor misfire at idle. I took a timing light and put it on each cylinder to find that all the cylinders would occasionally misfire and none more than any other.
I have newish wires, brand new plugs and brand new cap and rotor. still no change. So now im kinda at a loss for what to do next. The I opened the IACV up a little so it would stall when stopping at a light but its will still bog down to 650 and bounce around but once you hit the gas and its above 1000 rpm it doesnt feel like ive lost any power.

Because I could see the misfire in the wires im assuming its an Ignition problem but before I start tearing things apart I wanna get some opinions. Maybe my dizzy is bad? Its just weird how it started right after the head swap.

240_fun
05-06-2010, 11:30 AM
ANYONE? my car is slow and misfires and it sucks, im trying to boost soon and I cant with a car thats not running right

240_fun
05-06-2010, 07:20 PM
Im gonna go put in another ECU since i have one laying around and ill check out the timing again...
One thing i did remember is that the dizzy did NOT like going into the hole at all, i had to tap it in with a hammer. Maybe something is jammed up a bit?

240_fun
05-08-2010, 09:12 PM
its not the CTS, just sayin......