how would i find one besides doing a smoke test my car feels like it lost alot of power since i out on my longtubes and my car backfires could it be because the sparkplugs i put in were cheap?

 

why would you buy long tubes and then put in cheap spark plugs? change your plugs and wires sounds like a mis, the backfire is unburnt fuel in the exhaust.

 

do i have to change the wires or is that optional and the spark plugs arnt that cheap their autolight platnum the $2.89 ones

 

double check to make sure u got the wires in the right place. do the headers have 02 sensors?

 

you may have burned a wire into with the headers. one of mine burnt into one time and it ran like crap. Shaky idle, low on power, sputtered. sometimes the wires can go bad inside too. Also, you can pull the wire apart when you take it off, so you have to watch for that.

 

yea the headers have 02 sensors...and thats exactly what my car does it has all those symptoms ill check the wires

 

so i got new wires do i have to put the little metal thing with the spring on the end of them?

 

ok well i got the wires and they have random numbers on them are they suppose to go in a certain order?

 

if there the kind im think of the metal springs go on the ends. they are what clicks over the spark plug ends. u shoul take them off one at a time and replace if u dont know the firing order. should say what plug they go to on the coils. as far as i know chevys are still odd 1,3,5,7 on the drivers side and even 2,4,6,8 on the pasanger side. front to back.

 

I had an exhaust leak a while back. It turns out it was caused when my oil pan was replaced. They had to take the header off to replace the pan. They had to use a torch to get the header bolts loosened. Somehow they burnt a hole in some kind of rubber exhaust tube (I think it goes to some kind of sensor). Wish I could remember the name of that tube...