What is this noise?

[Seer]

At first I thought it was a header leak, but car is down on power, seems to shake the rear end pretty bad around 40-65mph at low load, like around 1400-1800 rpm.

Idle is pretty bad, no codes thrown etc. Noise increases in speed with rpm.

http://s1112.photobucket.com/user/jwr5050/media/20130622_231501_zps4f2f9d94.mp4.html

edit: not a great quality vid but you'll hear the ticking faintly, in person its quite loud.

Doesn't seem to be an exhaust leak as this makes the car act pretty damn weird, and stumble/pop on itself while cruising.

 

[CPRsm]

No worky for me. Is it me?

 

[Kenaizer]

Damn man. I can't tell what it is but it doesn't sound good.

 

[BruceH]

That noise at the end almost sounds like a misfire but it's real hard to tell from the video. There are a lot of noises going on.

What exactly is happening and when did it start?

 

[Seer]

That noise at the end almost sounds like a misfire but it's real hard to tell from the video. There are a lot of noises going on.

What exactly is happening and when did it start?

Today. No codes.popped up. Drove the car home 35 miles. It revs fine. But the car "vibrates" in some senses under low load.

Hoping.its just a bad plug

 

[Seer]

Think I found the culprit, now what caused it is the next question. NGK TR6 at .028. I think I may need to go to BR7EF.

 

[stkjock]

What fuel and boost?

 

[Seer]

At the time 18psi 93 octane. I wasn't under wot at the time. Nor was I in boost.

 

[konablue11gt]

Better do a compression check something caused that plug to close up

 

[psfracer]

Better do a compression check something caused that plug to close up

Yep. Hopefully you will get lucky but something hit that spark plug.

 

[Seer]

I drove home about 35 miles with this issue. Doesn't seem like its a.major issue.

 

[CPRsm]

What does the porcelain look like? Could be detonation, plug looks like it has a lot of heat in it.

 

[BruceH]

A borescope would come in real handy about now. Harbor Freight has them for under $100 from time to time.

 

[stkjock]

Yep. Hopefully you will get lucky but something hit that spark plug.

Yea that's what I was thinking as well.

Jason - did u pull all the plugs?


But at 18# on pump I think the BR7s are a better choice.

 

[Seer]

Yea that's what I was thinking as well.

Jason - did u pull all the plugs?


But at 18# on pump I think the BR7s are a better choice.

Yep, I was taking it for a longer drive, so I switched it off E85 for a little while. That and I wanted to run some gas through the system.

 

[stkjock]

So that was the Only plug that lookEd bad
?

 

[Seer]

Yep. Not fused either

Spoke too soon

 

[stkjock]

So how many are fubar?

 

[Seer]

So how many are fubar?

Just the 1

 

[CPRsm]

Detonation like a mother.