I opened my cam gear cover and i saw rubber dust from the timing belt! Is this normal? I just have my engine rebuilt a month ago or 1500 miles ago.... Is the belt too tight thats why is making dust? or is this normal?

i'm having a vibration at 4k rpm when u let off the throttle. could this be the issue? Al(Dynoflash) tuned my car couple weeks ago and he said that im having excessive vibration and he is 99.9% positive that its the balance shaft.

what do you guys think?

.

 

Is it an oem timing belt?

 

yup! It was brand new but i remember that we they took it apart there was no dust from the old one.

 

Take a look around and see if it's rubbing on something like the dust shield or the head of a bolt.

 

head of a bolt of what? which bolt you're refering?

 

grab a flashlight and take a loooong peek down in there

 

Do you have stock cam gears?

 

yup!

 

Sounds like someone did not put the oil/balance shaft gear into phase correctly when they put the belt back on. You need to get that fixed. Al knows what he is talking about and if he told you that than that is what it is and I agree

 

im going to the shop next week....hopefuly they can fix it