LOUDandPROUD96

I have a 96 z28 and I cannot get the P0300 code to go away. I have changed the plugs, wires, distributor cap/rotor. Has anyone else had this same problem and can offer any suggestions?

Dleep79

iTrader: (3)

Smells like an Opti to me.

great421

iTrader: (1)

Those are the only things left - good luck!

The module and coil are both easy to get to; and you know (if you've already replaced the cap and rotor) about the Opti...

Sorry to confirm the worst.

socal

iTrader: (1)

i got the same code for years after i put in the hot cam, your not missfiring (unless you still have the stock cam) it's that the cam is just a little erratic and sets off the code. Its only in obd2 becouse of the crank pick up. Basically it has to be programed out or turned off.

TwoFast4Lv

iTrader: (8)

if you have acam other then stock it needs programed out. if stock cam it should not be there. to many things to list that "could" cause it

LOUDandPROUD96

i still have the stock cam sadly. I discovered that i need a new intake manifold gasket and one of my injectors is going bad yesterday. hopefully the leaky intake manifold gasket has something to do with the random misfire, i've heard that code can come up for quite a few different reasons. i should know by the end of today or tomorrow so i'll let you all know when i figure it out.

indirocz28

iTrader: (7)

well- and the bad injector will cause it also b/c your car is just sucking air into the cylinder if the injector is not squirting, or if its squirting to much your flooding out that cylinder..

TwoFast4Lv

iTrader: (8)

The injectors would cause it