z28 camaro makes popping sound

**dany3350** · 01-04-2013, 01:40 PM

So i got the air check valves and the car turned on and looked at the moter when i saw sparks comming out of the top spark plug wire the one ontop of moter so i fixed that and now car makes a popping sound every 3 or so seconds what coyld cause this coyld it be a spark plug is not hooked up right since i did put new wires and plugs into it?

**cammed goat** · 01-04-2013, 05:41 PM

Sparks coming from the TOP of the plug wire? That's arcing. Based on the description, it sounds like you may have defective wires, they are loose or you have the wires crossed somewhere.

**2002ssslp** · 01-04-2013, 05:46 PM

Need more info. Sparks ? Popping ? How did you fix the problem ?

**pajeff02** · 01-05-2013, 10:16 AM

Any codes being set? Sounds like a misfire.

**dany3350** · 01-05-2013, 01:22 PM

Today set out to work on the car again and thought it would be a foulty coil since it was in bad shape got a new one nothing the car still made that sound all plugs seem to be on right i noticed the car starts pops the stops the backfire and then starts again after 5 or so seconds oh and i dont have the y pipe just yet but dont think its bec it not connected to the exhust and i tried getting the codes since its an obd1 had to use a small wire did so but light never blinks also did a bypass on my VATS doubt thats related what else could cause this oh when the car was running for a bit i noticed headers were smoking brob bec i painted them and they were burning off paint and oil build up but as that was going on the side was kinda pushing air out a small wave of air was coming out it was consistant could this also cause this load popping backfires?

**dany3350** · 01-05-2013, 01:24 PM

Oh and i fixed it simply connecting it right it was loose

**dany3350** · 01-05-2013, 01:43 PM

Forgot to mention this but car has not catalitic converter never did just went to exhust pip at the moment i dont have the y pipe and one o2 sensor from passangers side is hanging bec i need an extention in order for it to plug into the long tube header which r also new

**dany3350** · 01-05-2013, 01:53 PM

And when car turns temo goes off the roof like 250 and thats really fast for the first 2 min has radiator fluid and the thermostat is new bec i checked and previous owner changed it

**cammed goat** · 01-05-2013, 06:34 PM

Okay. First, get that O2 sensor extension and connect the sensor. Once you get that out of the way, and with the engine cool, take off the radiator cap and let the car run for a few minutes as I suspect there is air in the cooling system.

If the exhaust system is apart, connect EVERYTHING. You really can't run an engine with just headers. That will cause issues.