04 cobra help. Car running weird - Video

[jrandy]

My neighbor had a 2004 cobra that just started running like crap. He called me a few days ago to check it out and i just got over there. He has a 2.76, tune, and exhaust. The car has been driving fine for about 8 months, then just started this.



- The car drives under normal load just fine.
- Car idles fine (but seems to have an occasional slight miss while warming up).
- There are no error codes.
- While WOT, the supercharger sounds like it struggles and surges
- Only showing about 12 lbs of boost (has a 2.76).
- The car has very little power, my stock 03 cobra is much faster currently


Please see video below to hear the blower.




[nomedia="http://www.youtube.com/watch?v=M62Y3o5TCoc"]YouTube - 2011 01 18 13 32 58 125[/nomedia]





Mods feel free to move if in incorrect section.

 

[Jomo1994z71]

Check plugs?

 

[Fat-cat]

Yup sounds like burnt or fouled plugs. My buddies Eaton car was making a similar noise and the plugs where fouled due to wet coil packs. Pull them and replace and it report back. Cheep and quick thing to check for sure.

 

[va boy]

PLUGS, mine did the same thing, only a worse. I had just bought the car and found the plugs to gapped at around .060!
Let us know what you find out.

 

[svo/svt]

What should the plugs be gaped at?

 

[jrandy]

we pulled the plugs tonight and they seemed to be alright. he is going to replace them tomorrow and hopefully that will solve the issue.


on a side note, we found a few of the plugs to be loose.... inspired me to check mine out tomorrow too.

 

[04svtcobrablack]

What should the plugs be gaped at?

I have the same pulley he has a 2.76 gapped at .032 no issues. had a similar problem with mine. ended up being the gap was to open at about .043 hope this helps

 

[skratpiece]

NGK TR6 in mine last week and sucking up gas like crazy. Going back to stock plugs.

 

[jrandy]

Replaced all plugs and the problem persisted. Changed the cops to factory and runs like new. Thanks for the input!