this is 03 civic ex. manual trans. today i opend up the air filter box (it stock) and tried to look inside the throttle body. as soon as i open up the throttle plate inside and put my finger in, i found black color dust inside with little greasy stuff. its inside on a little top part, other than that its clean inside. what is it ? is it suppose to be like that or i should clean it ? how do i clean it. it has only 30k miles. please advise.

 

Brake-clean and a rag, dude. It's just gunk (oil and dust) that builds up in there after a while. Nothing to be concerned about.

 

well if theres oil it could be ur PCV valve... i know that i've heard those little tornado things make a black soot in the intake...

 

what you mean PCV valve ? is it something to be worried about ? or i should clean it

 

welll i was thinkin at 30k ... i dout its really malfunctioning... but its possible.... PCV= positive crankcase ventilation .... like $10 bucks tops... and it lets the motor (or top end specificly) breath through the intake and doesn't let any oil into the intake...

EDIT: 1100th POST!!! suposedly ur supose to shake it and if it doesn't make a noise like a lil ball shaking inside then its no good...

 

k got u. so you are saying htat i should replace it or clean the throttle body ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by return_2020 &raquo;</TD></TR><TR><TD CLASS="quote">k got u. so you are saying htat i should replace it or clean the throttle body ?</TD></TR></TABLE>

check the valve first and clean the throttle body first...

 

what and how should i check it ? sorry bro. tring to learn things here