hey guys i changed my spark plugs over the weekend to a set of Autolite Cold Plugs. well now when i am driving down the road at a constant speed the car seems to jerk and my CEL light came back on. i have my spark plugs spaced just as much as the stock .042, anyone got some advice?

 

sry for double post comp was f'ing up

 

just go to the other post and select the delect post option. cant' help with the plugs though sorry.

 

Did you get the right heat range?

Did you get the same type of plugs even?

If not then you should.

 

you're running colder plugs? why? are you running nitrous or boosting?

 

Yea, you don't need colder plugs. Thats just for teh s/c guys . Although I'm curious as to what brand the na's prefer?! So post to that!! As I'm going to look at mine, if they are bad I'm getting some new type.

 

What about the Bosch Platinum 4's... im thinking about getting those and changing out my wires but im not sure it it will be worth it or even work correctly.

 

no need for a spark upgrade when car is not highly modified, go back to stock plugs

 

probably not worth upgrading the plugs at this point, especially not to colder ones. if anything, i'd just throw in a set of Bosch Platinum +4's to smooth things out.

 

If you are thinking about changing wires on your Cobalt there is no need. The Ecotec doesn't have plug wires. The sparkplug caps and everything else are integrated into one unit. Its the black plastic part on top of the engine that says 2.2 Ecotec.

 

take the cover off the unit and put a screw driver across 2 of the metal prongs sticking out and see what happens

 

The ecotec uses a thing called compression sensetive coil modules or a combination of something like that, cant remember the exact name. But anywho, if you put something other than ac delco/ gm plugs in there, you have a greater risk for setting bogus codes, cause well honestly, most of the other plugs are low quality imitations.

 

Thanks for the advice... im getting things together now for my mods.. just picked up the car 2 days ago so... no time to do anything yet. Just ordered my intake and looking at the DC sports exhaust... When is a good point if any to change the plugs?

 

bosch plugs are junke everyone i no who has used them has had problems including me

 

as long as your stock plugs are good there is really no need to change them. there is no power increase from the plugs but you may notice better idle and a smoother start up. Again though, if your stock plugs are fine there is no reason to.

as for colder plugs you only need them when you are going to a first induction setup, they aren't going to hurt you in NA form.

 

first off you dont really need to change the spark plugs on the ls less your boosting or shooting nos are you doing ither of those two casue the spark plug really isnt going to do anything for you. but i dont know if the ls plug space is different from my ss sc but it stock gap it .35 and i gapped them at .28 and the rough idleing problems went away and no cel light ither your best bet is to go back to your stock plugs thou bro LATERS'

 

ROFLMAO your gonna get the poor guy bit