so i went out to start up my g5 this mornin it has the 2.2. and it wouldent start. it would sit there and crank and crank and crank. i sat there for about five minutes trying to start it. and fianly it cranked over and it was a hard start. i honestly dont know what it is and i was wandering if you guuys new. and btw i have peformance spark plugs too. i dont know if that has anything to do wit the problem...

 

how old are the spark plugs?

 

when you say crank was it turning over or just nothing when you hit it.

 

Could be alot of things really, hard to tell. Did you just put in the plugs or do anything else recently that could be causing this??? I would check for codes, even if you have no ses lamp.

 

I INSTALED THEM PRY ABOUT A WEEK AGO. AND DONT EVEN HAVE 200 MILES ON THEM YET.

NO IT WAS CRANKING AT A HI RPM. IT WAS WANTING TO START BUT IT WOULDENT START. AND I HAVE CHECKED FOR CODES BUT NOTHING

 

What kind of plugs? Did the car give you anymore trouble after you got it running?

 

those "performance plugs" end up breaking off and hurting the engine.

 

I vote plugs.

 

put stock ones from the dealer back into the car. your hurting your motor

 

x2..

 

Just think about it, you changed the plugs less than 200 miles ago, and now you are having problems with it starting. It should be the plugs by common sense.

Or your parked on an incline and almost out of gas...

 

you have the ICM not coil on plugs.


your plugs killed your ICM and you need a new one is my guess.

it has happened to me and many others.


there is a reason GM changed the design


use Delco plugs

 

On and what the hell are "performance" spark plugs?

 

the good kind duhhh

 

How much performance do they give?

 

i had the same problem as adrian although i can say that the plugs weren't the problem, i had delco plugs in when the stalling and hard starting happened then changed my plugs after the problem started and it still happened.

and yeah. what are performance plugs.

anyone know if bosch platinum plus 4's are good plugs?

 

i had stock plugs in when it happened as well. just used myself as an example

 

DON'T USE BOSCH PLATINUM ANYTHING! These are garbage! Plus the cobalt uses an Iridium plug from the factory. Don't use anything but AC Delco!

 

Look heres the scoop with the Bosch Platinum +4's. If you have a distributor like a lot of 05/06 cobalts, you run a really high risk of destroying it and having to get a new one.

if you have an 07 or newer cobalt with Coil-on-Plug setup, then you can install them no worries. I've had mine in for 40,000 and not a problem yet....

everyones all iridium is the best NGK blah blah blah stay stock blah blah blah...just pick a good brand and stick with them....but go by what I have above....I've seen this topic come up over and over and the main deciding factor is if you have a distributor or a coil on plug setup.

 

Well in reality, the AC Delco plug is an NGK plug. I have seen these in Delco boxes with NGK on the plug. And you do make a good point. The coil on plug system is probably better to run the Plat 4's.

 

I have never seen Delco plugs with Any sort of NGK logo on them. Me and the parts manager at work have argued over who made delco plugs and there is no hint of any other company anywhere.


Delco plugs are your best route regardless of how "Efficient" other plugs are. They work, they're relatively inexpensive, and it's a trusted brand. Spark plugs add little to nothing when it comes to performance, unless your comparing worn-out stock plugs to brand new "performance plugs"

 

sorry but no cobalt has a distributor. they all have some sort of coil system on them. the newer ones has the coil on plug and the older has the lil coil box with the wires runnin on the inside of it.

im not tryin to be a dick man but sayin somethin like that is how others pick up on somethin thats not true and run with it thinkin they know somethin.