exhaust leak?

 

+1 maybe where the haders bolt up to the engine the gasket is warn?

 

no, i put on new headers and the noise was still there. Pretty sure its not that.

 

get a stethoscope from autozone and put it on or near your injectors, i have a ticking that i thought was coming from the back of my engine but turned out one of my injectors is ticking awefully loud.

 

get a stethoscope from autozone and put it on or near your injectors, i have a ticking that i thought was coming from the back of my engine but turned out one of my injectors is ticking awefully loud.

Is that only when the car was in gear and under acceleration? Or was the noise always there?

 

Detonation?

 

+1 on that.

The V6 engine tends to develop carbon deposits in the rear cylinders due to the PCV design. This causes preignition on acceleration. If this is the problem you might benefit from some kind of decarbonizer treatment. I believe some people say that Sea Foam added through the intake will help.

 

This could be an injector as DGT said, detonation, as tugger said, or worse case scenario, a rod or main bearing....but that would be pretty loud. If you do the stethoscope thing, which is a great idea, you can also try listening to the pan or the cam covers.

 

Maybe having a bit of valve lash?

 

yea, i am going to have to see if its the injectors. havent tested that out yet.

 

And i used some Octane booster and did premium fuel, but that didnt do anything. Still

 

change the oil. i know mine did it when it was low on oil. cause i doubt you spun a bearing

 

The oil is real fresh and fulll, so cant be that.

 

read my thread

 

http://www.moddedmustangs.com/forums/v6-mustangs/43955-sorry-bother-yall-again-but.html

 

Could it be the lifters? because i found the source of the sound is coming from inside the crankcase. Opened up the oil cap and the sound was coming from right inside there.

 

try putting some seafoam in the oil/crank case ... sometimes seafoaming oil can clean up sticky lifters

 

Is this car a stick? Cuz I'm wondering if it's a throw out bearing noise.

 

isn't that more of a screech and only when the clutch is engaged?

 

Typically yeah. But if he's having problems tracking it down, it's just a thought.

 

oh

 

nope its an automatic. I am really thinking the sound is coming from one of the lifters

 

keep me posted on that my friend has an 02 with a ticking also..

 

do you know what engine knock is? i doubt you have a lifter problem.....check your spark plugs and ignition cables to make sure that you are gettin a good spark.

 

Ok, its a loud ticking noise, but its loudest under the valve cover after taking off the oil cap. Just have to see what it is under there and I am very certain it is something under there. Just like it was said, it could be something with the PCV systm. Will definately check that out.

 

i had a clicking noise but it was a cracked exhaust manifold, but got it fixed and it stopped