i am having misfire issues on my b18b at idle it sits there and the exhaust just pops
i found out i was having an intake manifold leak, so i fixed that and it still doing it!

new cap and rotors and spark plug wires and spark plug!
o2 isnt hooked up could that cause the problem?
need help!
thank you

 

CEL???

 

only cel its throwing is a o2 sensor.
i need to hook it up but i dont think it would cause misfire when its sits there and idle and just pops

 

Fix your 02 first before you diagnose any further, why isn't it hooked up?

 

had a cheap eldebrock header someone installed and they welded the 02 bung shut

 

Ok so have a new one welded back in.